Constant-pressure water supply system with automatic pressure relief function

Abstract

The constant-pressure water supply system with the automatic pressure relief function comprises a water inlet header pipe, the water outlet end of the water inlet header pipe is connected with an eccentric reducer through a water inlet butterfly valve, the other end of the eccentric reducer is connected with a booster pump set, and the other end of the booster pump set is connected with a water outlet concentric reducer. The water outlet concentric reducer is connected with a water outlet butterfly valve through a water outlet rubber clack check valve, the other end of the water outlet butterfly valve is connected with a water outlet main pipe, the water outlet main pipe is connected with a tee joint a through a butterfly valve I, the tee joint a is respectively connected with a pressure tank and a tee joint b, the tee joint b is respectively connected with a butterfly valve II and a butterfly valve III, and the other end of the butterfly valve III is fixedly connected with a pressure release valve; the water outlet main pipe is provided with an outlet main pressure sensor and an outlet standby pressure sensor so as to form a dual-sensor redundant system which is standby for each other and is used for detecting the real-time pressure of an outlet; according to the utility model, the problem that an outlet pressure detection mechanism is single can be effectively solved, and meanwhile, the problem of pipe explosion caused by abnormity of double sensors after a redundant system is input can be more reasonably solved through the automatic pressure relief device.

Description

[Technical field]

[0001] The utility model relates to the technical field of variable frequency constant pressure water supply, in particular to a constant pressure water supply system with an automatic pressure relief function. [Background Technology]

[0002] At present, in order to ensure the stable pressure of domestic water for residents, the water supply boosting system pressure detection mainly relies on the pressure sensor on the main water outlet pipe. When the water outlet pressure is lower than the set pressure value, the pump group is started to boost the pressure to maintain the constant water outlet pressure. Due to the single outlet pressure detection structure, when the outlet pressure sensor is abnormal, the feedback pressure value has a large deviation, especially when the outlet pressure far exceeds the high set pressure value, the boosting system will continue to boost the pressure, resulting in the risk of water outlet pipe bursting. [Contents of the utility model]

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies and provide a constant pressure water supply system with an automatic pressure relief function, which can realize that when the main sensor is abnormal, the backup sensor of the redundant system is put into use, thereby effectively solving the problem of a single outlet pressure detection mechanism. At the same time, the automatic pressure relief device can more reasonably solve the problem of pipe burst caused by abnormalities of both sensors after the redundant system is put into use.

[0004] In order to achieve the above-mentioned purpose, a constant pressure water supply system with automatic pressure relief function is designed, including a water inlet main pipe 310, a water outlet main pipe 318, a booster pump group 106 and a pressure tank 423. The water outlet end of the water inlet main pipe 310 is connected to a water inlet butterfly valve 311, and the other end of the water inlet butterfly valve 311 is flange-connected to an eccentric reducer 312. The water inlet butterfly valve 311 is eccentrically arranged with the eccentric reducer 312, and the other end of the eccentric reducer 312 is connected to the booster pump group 106. The other end of the booster pump group 106 is connected to a water outlet concentric reducer 315, and the water outlet concentric reducer 315 is connected to a water outlet rubber flap check valve 316 through a flange. The water outlet concentric reducer 315 is concentrically arranged with the water outlet rubber flap check valve 316, and the other end of the water outlet rubber flap check valve 316 is connected to a water outlet butterfly valve 317. The other end of the tee a412 is connected to the water outlet main pipe 318, and the water outlet main pipe 318 is connected to the butterfly valve 1 411 through the pipeline 410. The other end of the butterfly valve 1 411 is connected to the tee a412, and the tee a412 is flange-fixed to the pressure tank 423 through a short-circuit flange. The other end of the tee a412 is connected to the tee b413, and one end of the tee b413 is flange-connected to the butterfly valve 2 415, and the other end of the tee b413 is flange-connected to the butterfly valve 3 419, and the other end of the butterfly valve 3 419 is fixedly connected to the pressure relief valve 418; the outlet main pressure sensor 108 and the outlet backup pressure sensor 110 are installed on the water outlet main pipe 318, and the outlet main pressure sensor 108 and the outlet backup pressure sensor 110 form a dual sensor redundant system that serves as a backup for each other to detect the real-time outlet pressure.

[0005] Furthermore, the output pipeline of the pressure relief valve 418 and the output end pipeline of the butterfly valve 415 are both connected to the drainage pipeline, and the outlet of the drainage pipeline is provided with an insect-proof net 416. The pressure relief valve 418 is equipped with a pressure gauge 417, and the pressure gauge 417 is used to display the pressure there in real time.

[0006] Furthermore, the water inlet main pipe 310 is equipped with a water inlet pressure sensor, and the water inlet pressure is detected by the water inlet pressure sensor. The water outlet main pipe 318 is equipped with a water outlet electric contact pressure gauge 109, and the water outlet electric contact pressure gauge 109 is used to display the actual pressure value of the current outlet.

[0007] Furthermore, the water inlet pressure sensor is welded to the water inlet main pipe 310 through an external thread 324, and is connected to the ball valve 323 through an elbow. The other end of the ball valve 323 is connected to a double-ended thread straight-through 322, and the other end of the double-ended thread straight-through 322 is connected to a double-ended internal thread 321. The other end of the double-ended internal thread 321 is installed with a pressure sensor header 320. The double-ended thread straight-through 322 and the double-ended internal thread 321 are used to extend the numerical display of the pressure sensor header 320.

[0008] Furthermore, a second pressure gauge 422 is installed on the pressure tank 423, and the second pressure gauge 422 is used for pressure display. An air supply valve 421 is installed on one side of the pressure tank 423, and the air supply valve 421 is connected to the pressure tank 423. The outer cover of the air supply valve 421 is provided with a protective cover 420, and is protected by the protective cover 420.

[0009] Furthermore, it also includes a switch display cabinet 101, wherein an HMI 102 is arranged above the front end of the switch display cabinet 101, a buzzer 105 is installed below the HMI 102, a cabinet door 104 is installed below the front end of the switch display cabinet 101, and the cabinet door 104 is opened by a door lock 103. The control unit of the switch display cabinet 101 communicates with the digital integrated controller 107 on the booster pump group 106 through CAN communication, and transmits the operating data and status of the booster pump group 106 to the HMI 102 through CAN communication for real-time interaction.

[0010] Furthermore, the motor box on the booster pump group 106 is connected to the metal hose 330, the other end of the metal hose 330 is connected to the metal tube 332, the metal tube 332 is fixed by a clamp 331, one end of the cable in the metal tube 332 is connected to the motor terminal, and the other end of the cable in the metal tube 332 is connected to the power terminal of the switch display cabinet 101.

[0011] Furthermore, the digital integrated controller 107 is placed on a single pump for backpack installation, and the booster pump group 106 drives the built-in impeller of the pressure-resistant barrel under the output drive of the digital integrated controller 107, thereby squeezing and outputting the fluid in the water inlet main pipe 310 to the water outlet main pipe 318.

[0012] Furthermore, the booster pump group 106 is fixed on the pump group base 314, the pump group base 314 is fixed to the cover base 313, the other end of the cover base 313 is fixed to the cover 202 by screws, and the upper sealing plate 201 is fixed on the cover 202, and the lower sealing plate 203 is fixed under the cover 202.

[0013] Furthermore, the lower sealing plate 203 is preset with an inlet pressure sensor hole 204, a prefabricated hole 1 205, a prefabricated hole 206, and a prefabricated hole 3 207. The inlet pressure sensor hole 204 and the prefabricated hole 1 205 are used to install the outlet main pressure sensor 108, the prefabricated hole 206 is used to install the outlet electric contact pressure gauge 109, and the prefabricated hole 3 207 is used to install the outlet backup pressure sensor 110. The outlet main pressure sensor 108 and the outlet backup pressure sensor 110 have the same structure.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] (1) The utility model adopts a sensor redundancy system. When the water outlet main sensor is abnormal, the backup sensor is put into use, which can reduce the risk of the system stopping operation due to sensor abnormality while meeting the working conditions;

[0016] (2) The utility model adopts a protective cover structure, which can effectively place the water inlet and outlet pipes and other assembly accessories at the lower end of the protective cover, effectively preventing the risk of fluid leakage after being pressurized, causing fluid to spray onto the digital integrated full frequency conversion control system and other control systems, causing the unit to be paralyzed;

[0017] (3) In the case of a pipe burst caused by an abnormality in the redundant sensor systems or a sudden increase in the pipe pressure, the utility model can effectively avoid the risk of pipe burst by automatically detecting the pressure of the water outlet main pipe and performing an automatic pressure relief device, thereby extending the service life of the water outlet pipe;

[0018] In summary, the utility model can realize the use of the backup sensor of the redundant system when the main sensor is abnormal, thereby effectively solving the problem of the single outlet pressure detection mechanism. At the same time, the automatic pressure relief device can more reasonably solve the problem of pipe burst caused by abnormalities of both sensors after the redundant system is put into use, and is worthy of popularization and application. [Drawings]

[0019] Figure 1 It is a front view structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 3 It is a side view structural schematic diagram of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the automatic pressure relief device of the utility model;

[0023] In the figure: 101, switch display cabinet; 102, HMI; 103, lock; 104, cabinet door; 105, buzzer; 106, booster pump group; 107, digital integrated controller; 108, outlet main pressure sensor; 109, outlet electric contact pressure gauge; 110, outlet spare pressure sensor; 201, upper sealing plate; 202, cover plate; 203, lower sealing plate; 204, inlet pressure sensor hole; 205, prefabricated hole 1; 206, prefabricated hole 2; 207, prefabricated hole 3; 310, water inlet main pipe; 311, water inlet butterfly valve; 312, eccentric reducer; 313, cover plate base; 314, pump group base; 315, outlet Water concentric reducer; 316, water outlet rubber flap check valve; 317, water outlet butterfly valve; 318, water outlet main pipe; 320, pressure sensor head; 321, double-ended internal thread; 322, double-ended thread straight-through; 323, ball valve; 324, external thread; 330, metal hose; 331, clamp; 332, metal pipe; 410, pipeline; 411, butterfly valve one; 412, tee a; 413, tee b; 414, bracket; 415, butterfly valve two; 416, insect net; 417, pressure gauge one; 418, pressure relief valve; 419, butterfly valve three; 420, protective cover; 421, air supply valve; 422, pressure gauge two; 423, pressure tank. [Specific implementation method]

[0024] As shown in the accompanying drawings, the utility model provides a constant pressure water supply system with an automatic pressure relief function, including a water inlet main pipe 310, a water outlet main pipe 318, a booster pump group 106 and a pressure tank 423. The water outlet end of the water inlet main pipe 310 is connected to a water inlet butterfly valve 311, and the other end of the water inlet butterfly valve 311 is flange-connected to an eccentric reducer 312. The water inlet butterfly valve 311 and the eccentric reducer 312 are eccentrically arranged, and the other end of the eccentric reducer 312 is connected to the booster pump group 106. The other end of the booster pump group 106 is connected to a water outlet concentric reducer 315, and the water outlet concentric reducer 315 is connected to a water outlet rubber flap check valve 316 through a flange. The water outlet concentric reducer 315 and the water outlet rubber flap check valve 316 are concentrically arranged, and the other end of the water outlet rubber flap check valve 316 is connected to a water outlet butterfly valve 317. The water outlet butterfly valve The other end of 317 is connected to the water outlet main pipe 318, and the water outlet main pipe 318 is connected to the butterfly valve 1 411 through the pipeline 410. The other end of the butterfly valve 1 411 is connected to the tee a412, and the tee a412 is flange-fixed to the pressure tank 423 through a short-circuit flange. The other end of the tee a412 is connected to the tee b413, one end of the tee b413 is flange-connected to the butterfly valve 2 415, and the other end of the tee b413 is flange-connected to the butterfly valve 3 419, and the other end of the butterfly valve 3 419 is fixedly connected to the pressure relief valve 418; the outlet main pressure sensor 108 and the outlet backup pressure sensor 110 are installed on the water outlet main pipe 318, and the outlet main pressure sensor 108 and the outlet backup pressure sensor 110 form a dual sensor redundant system that serves as a backup for each other to detect the real-time outlet pressure.

[0025] The output pipeline of the pressure relief valve 418 and the output end pipeline of the butterfly valve 415 are connected to the drainage pipeline. The outlet of the drainage pipeline is provided with an insect screen 416. The pressure relief valve 418 is provided with a pressure gauge 417, which is used to display the pressure there in real time. The pressure tank 423 is provided with a pressure gauge 422, which is used to display the pressure. One side of the pressure tank 423 is provided with an air supply valve 421, which is connected to the pressure tank 423. The outer cover of the air supply valve 421 is provided with a protective cover 420, and is protected by the protective cover 420.

[0026] A water inlet pressure sensor is installed on the water inlet main pipe 310, and the water inlet pressure is detected by the water inlet pressure sensor. A water outlet electric contact pressure gauge 109 is installed on the water outlet main pipe 318, and the water outlet electric contact pressure gauge 109 is used to display the actual pressure value of the current outlet; the water inlet pressure sensor is welded to the water inlet main pipe 310 through an external thread 324, and is connected to the ball valve 323 through an elbow, the other end of the ball valve 323 is connected to a double-headed wire straight-through 322, and the other end of the double-headed wire straight-through 322 is connected to a double-headed internal thread 321, and a pressure sensor header 320 is installed on the other end of the double-headed internal thread 321, and the double-headed wire straight-through 322 and the double-headed internal thread 321 are used to extend the numerical display of the pressure sensor header 320.

[0027] It also includes a switch display cabinet 101, an HMI 102 is arranged above the front end of the switch display cabinet 101, a buzzer 105 is installed below the HMI 102, a cabinet door 104 is installed below the front end of the switch display cabinet 101, and the cabinet door 104 is opened by a door lock 103. The control unit of the switch display cabinet 101 communicates with the digital integrated controller 107 on the booster pump group 106 through CAN communication, and transmits the operating data and status of the booster pump group 106 to the HMI 102 through CAN communication for real-time interaction; The motor box is connected to the metal hose 330, the other end of the metal hose 330 is connected to the metal tube 332, the metal tube 332 is fixed by a clamp 331, one end of the cable in the metal tube 332 is connected to the motor terminal, and the other end of the cable in the metal tube 332 is connected to the power terminal of the switch display cabinet 101; the digital integrated controller 107 is placed on the single pump for backpack installation, and the booster pump group 106 drives the built-in impeller of the pressure-resistant barrel under the output drive of the digital integrated controller 107, thereby squeezing the fluid in the water inlet main pipe 310 and outputting it to the water outlet main pipe 318.

[0028] The booster pump group 106 is fixed on the pump group base 314, the pump group base 314 is fixed to the cover base 313, the other end of the cover base 313 is fixed to the cover 202 by screws, and the upper sealing plate 201 is fixed on the cover 202, and the lower sealing plate 203 is fixed below the cover 202; the lower sealing plate 203 is preset with an inlet pressure sensor hole 204, a prefabricated hole one 205, a prefabricated hole two 206, and a prefabricated hole three 207, the inlet pressure sensor hole 204 and the prefabricated hole one 205 are used to install the outlet main pressure sensor 108, the prefabricated hole two 206 is used to install the outlet electric contact pressure gauge 109, and the prefabricated hole three 207 is used to install the outlet spare pressure sensor 110, and the outlet main pressure sensor 108 and the outlet spare pressure sensor 110 have the same structure.

[0029] The constant pressure water supply system with automatic pressure relief function described in the utility model mainly includes a water inlet main pipe, a water outlet main pipe, a booster pump group, a pressure tank and a switch display cabinet. One end of the water inlet main pipe is connected to the municipal main pipe, and water is provided through the municipal main pipe. The other end of the water inlet main pipe is connected to the booster pump group through an inlet butterfly valve and an eccentric reducer. The booster pump group is fixed to the pump group base, and the other end of the pump group base is fixed to the cover plate base by screws. The upper sealing plate is fixed to the cover plate, and the lower sealing plate is also fixed. The inlet pressure sensor hole, the pre- Prefabricated hole one is used to install the outlet main pressure sensor, prefabricated hole two is used to install the outlet electric contact pressure gauge, and prefabricated hole three is used to install the outlet spare pressure sensor. When the system is mechanically assembled, it can be directly tightened and fixed. The inlet pressure sensor is welded to the water inlet main pipe through an external thread, connected to the ball valve through an elbow, and the other end is directly connected to a double-headed thread, and the other end of the double-headed thread is connected to a double-headed internal thread to extend the numerical display of the pressure sensor head. The structures of the outlet main pressure sensor and spare pressure sensor are similar, so they will not be repeated.

[0030] The other end of the booster pump group is connected to the water outlet concentric reducer and is connected to the rubber flap check valve through a flange. The other end of the water outlet rubber flap check valve is connected to the water outlet main pipe through the water outlet butterfly valve. The water outlet main pipe is flange-connected to butterfly valve one through a pipeline. The other end of butterfly valve one is connected to tee a. Tee a is flange-fixed to the pressure tank through a short-circuit flange. There is pressure gauge two on the pressure tank for pressure display. The air supply valve is connected to the pressure tank and protected by a protective cover. The other end of tee a is connected to tee b. One end of tee b is flange-connected to butterfly valve two, and the other end is flange-connected to butterfly valve three. The other end of butterfly valve three is fixed to the pressure relief valve, and the output pipeline and the output end pipeline of butterfly valve two are aggregated to the drainage pipeline. Butterfly valve two is always in a normally closed state. When the pressure relief valve needs to be repaired, butterfly valve three is closed and butterfly valve is opened. Valve 2 is used for manual pressure relief. Pressure gauge 1 is installed on the pressure relief valve to display the pressure here in real time. An insect-proof net is installed at the outlet of the drainage pipeline to prevent other organisms from entering the pipeline through the outlet pipeline. The switch display cabinet communicates with the digital integrated controller through CAN, and the outlet pressure is fed back to the HMI in real time for data interaction. The lock is used to open the cabinet door to view the connection status of the components inside the switch display cabinet and handle the faults in time. When the system fails, the buzzer will sound and light alarm, and provide relevant personnel with timely troubleshooting and maintenance. The metal hose is connected to the motor box on the booster pump group, and the other end is connected to the metal pipe and fixed by a clamp. One end of the cable in the pipe is connected to the motor terminal, and the other end is connected to the power terminal of the display switch cabinet.

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0032] As attached Figure 1 As shown, a buzzer 105 is installed below the HMI 102 at the front end of the switch display cabinet 101 of the utility model, and the cabinet door 104 is opened through the door lock 103 at the lower end to install, check and repair components. The control unit of the switch display cabinet communicates with the digital integrated controller 107 on the booster pump group 106 through CAN communication, and transmits the operating data and status of the booster pump group 106 to the HMI 102 through CAN communication for real-time interaction. The outlet main pressure sensor 108 and the outlet standby pressure sensor 110 form a double sensor redundant system that is mutually standby to detect the real-time outlet pressure, and the outlet electric contact pressure gauge 109 is a double protection for the outlet pipeline overpressure; the digital integrated controller 107 is placed on a single pump for backpack installation, and the booster pump group 106 drives the built-in impeller of the pressure-resistant barrel under the output drive of the digital integrated controller 107, squeezes the fluid of the water inlet main pipe 310 and outputs it to the water outlet main pipe 318, thereby supplying domestic water.

[0033] As attached Figure 2As shown, the other end of the cover base 313 is fixed to the cover 202 by screws, and the upper sealing plate 201 is fixed on the cover 202. Similarly, the lower sealing plate 203 is also fixed. The inlet pressure sensor hole 204, the prefabricated hole 1 205, the prefabricated hole 206, and the prefabricated hole 3 207 are used to install the inlet and outlet pressure sensors and the electric contact pressure gauge. When the system is mechanically assembled, it can be directly tightened and fixed. At the same time, the inlet and outlet pipes and valves of the pump group are hidden by the mechanical structure of the cover to prevent the fluid from being directly rushed out by the pressure after leakage and damaging special systems such as digital integrated controllers.

[0034] As attached Figure 3 As shown, the pump unit base 314 is fixed to the cover base 313, the connection between the water inlet butterfly valve 311 and the water inlet main pipe 310, the other end is connected to the eccentric reducer 312 flange, the other end of the eccentric reducer 312 is connected to the pump unit flange, and the connection between the water inlet butterfly valve 317 and the water outlet main pipe 318 is fixed by bolts through the flange, the other end is connected to the rubber flap check valve 316, the other end of the rubber flap check valve 316 is connected to the concentric reducer 315, and the other end of the concentric reducer 315 is connected to the pump unit outlet flange, and the above-mentioned are combined to form the inlet and outlet water pipelines connected; the water inlet main pipe 310 is equipped with a water inlet pressure sensor, and the water inlet pressure sensor is used to detect the water inlet pressure. Pressure, a water outlet pressure sensor and a water outlet electric contact pressure gauge 109 are installed on the water outlet main pipe 318, the water outlet pressure sensor is used to detect the water outlet pressure, the water outlet electric contact pressure gauge 109 is used to display the actual pressure value of the current outlet, the inlet pressure sensor is welded to the water inlet main pipe 310 through an external thread 324, connected to the ball valve 323 through an elbow, and the other end is connected to the double-headed wire straight through 322, and the other end of the double-headed wire straight through 322 is connected to the double-headed internal thread 321; the metal hose 331 is connected to the motor box on the booster pump group 106, and the other end is connected to the metal pipe 332 and fixed by a clamp 331, one end of the cable in the pipe is connected to the motor terminal, and the other end is connected to the power terminal of the display switch cabinet.

[0035] As attached Figure 4As shown, the automatic pressure relief device includes a water outlet main pipe 318 connected to a butterfly valve 1 411 by a pipe 410, the other end of the butterfly valve 1 411 is connected to a tee a412, the tee a412 is flange-fixed to a pressure tank 423 by a short-circuit flange, a pressure gauge 2 422 is provided on the pressure tank 423 for pressure display, an air supply valve 421 is connected to the pressure tank 423 and protected by a protective cover 420, the other end of the tee a412 is connected to a tee b413, one end of the tee b413 is flange-connected to a butterfly valve 2 415, and the pipe is connected to the bracket 4 14 is fixed, and the other end is flange-connected with butterfly valve three 419. The other end of butterfly valve three 419 is fixed with pressure relief valve 418, and the output pipeline and the output end pipeline of butterfly valve two 415 are aggregated to the drainage pipeline. Butterfly valve two 415 is always in a normally closed state. When the pressure relief valve 418 needs to be inspected, butterfly valve three 419 is closed and butterfly valve two 415 is opened for manual pressure relief. Pressure relief valve 418 is equipped with pressure gauge one 417 to display the pressure situation here in real time. An insect-proof net 416 is provided at the outlet of the drainage pipeline to prevent other organisms from entering the pipeline through the outlet pipeline.

[0036] The utility model relates to a constant pressure water supply system with an automatic pressure relief function, which comprises a digital integrated full frequency conversion control system, a booster unit, a protective cover structure, an automatic pressure relief device and other units. The digital integrated frequency converter is placed on the motor junction box of the pump unit, and real-time data interaction is performed with the HMI on the switch display cabinet through the CAN communication method. The outlet pressure is fed back by the pressure sensor on the water outlet main pipe, and the pressure is transmitted to the digital integrated full frequency conversion control system for data conversion, comparison, calculation and other outputs, thereby driving the motor in the pump unit to operate. When the pressure value is lower than the set value, the booster pump unit is started to increase the pressure, and the outlet pressure is balanced with the set pressure. When the outlet pressure sensor is abnormal and the outlet pressure is much higher than the set value, the fluid will release the outlet pressure through the automatic pressure relief device to ensure that the outlet pipe will not burst due to continuous pressurization; the depressurized fluid is discharged into the drain ditch along the pressure relief manifold; the protective cover structure is fixed to the base of the booster unit, and the inlet and outlet water pipelines composed of accessories such as butterfly valves and check valves are placed at the lower end of the protective cover structure to avoid the risk of system paralysis caused by the fluid being ejected toward the digital integrated full frequency conversion controller system or other systems due to excessive pressure of the fluid caused by pressurization when the inlet and outlet water pipelines leak.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment adopt conventional models in the prior art, and circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here.

[0038] The present invention is not limited to the above-mentioned implementation modes, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A constant pressure water supply system with an automatic pressure relief function, comprising a water inlet main pipe (310), a water outlet main pipe (318), a booster pump group (106) and a pressure tank (423), characterized in that: The water outlet end of the water inlet main pipe (310) is connected to a water inlet butterfly valve (311), the other end of the water inlet butterfly valve (311) is flange-connected to an eccentric reducer (312), the water inlet butterfly valve (311) and the eccentric reducer (312) are eccentrically arranged, the other end of the eccentric reducer (312) is connected to a booster pump group (106), the other end of the booster pump group (106) is connected to a water outlet concentric reducer (315), the water outlet concentric reducer (315) is connected to a water outlet rubber flap check valve (316) via a flange, the water outlet concentric reducer (315) and the water outlet rubber flap check valve (316) are concentrically arranged, the other end of the water outlet rubber flap check valve (316) is connected to a water outlet butterfly valve (317), the other end of the water outlet butterfly valve (317) is connected to a water outlet main pipe (318), the water outlet main pipe (318) is connected to a water outlet main pipe (318) via a pipeline (4 10) is connected to butterfly valve 1 (411), the other end of the butterfly valve 1 (411) is connected to tee a (412), the tee a (412) is flange-fixed to the pressure tank (423) through a short-circuit flange, the other end of the tee a (412) is connected to tee b (413), one end of the tee b (413) is flange-connected to butterfly valve 2 (415), the other end of the tee b (413) is flange-connected to butterfly valve 3 (419), and the other end of the butterfly valve 3 (419) is fixedly connected to the pressure relief valve (418); the outlet main pressure sensor (108) and the outlet standby pressure sensor (110) are installed on the outlet main pipe (318), and the outlet main pressure sensor (108) and the outlet standby pressure sensor (110) form a dual sensor redundant system that serves as a backup for each other and is used to detect the real-time outlet pressure.

2. The constant pressure water supply system with automatic pressure relief function as claimed in claim 1, characterized in that: The output pipeline of the pressure relief valve (418) and the output end pipeline of the second butterfly valve (415) are both connected to the drainage pipeline. The outlet of the drainage pipeline is provided with an insect-proof net (416). The pressure relief valve (418) is provided with a pressure gauge 1 (417), and the pressure gauge 1 (417) is used to display the pressure there in real time.

3. The constant pressure water supply system with automatic pressure relief function as claimed in claim 1, characterized in that: The water inlet main pipe (310) is provided with a water inlet pressure sensor, and the water inlet pressure is detected by the water inlet pressure sensor. The water outlet main pipe (318) is provided with a water outlet electric contact pressure gauge (109), and the water outlet electric contact pressure gauge (109) is used to display the actual pressure value of the current outlet.

4. The constant pressure water supply system with automatic pressure relief function as claimed in claim 3, characterized in that: The water inlet pressure sensor is welded to the water inlet main pipe (310) via an external thread (324) and connected to a ball valve (323) via an elbow. The other end of the ball valve (323) is connected to a double-ended threaded straight-through (322). The other end of the double-ended threaded straight-through (322) is connected to a double-ended internal thread (321). The other end of the double-ended internal thread (321) is equipped with a pressure sensor gauge (320). The double-ended threaded straight-through (322) and the double-ended internal thread (321) are used to extend the numerical display of the pressure sensor gauge (320).

5. The constant pressure water supply system with automatic pressure relief function as claimed in claim 1, characterized in that: The pressure tank (423) is provided with a second pressure gauge (422) for displaying pressure. A gas replenishing valve (421) is provided on one side of the pressure tank (423). The gas replenishing valve (421) is connected to the pressure tank (423). A protective cover (420) is provided on the outer cover of the gas replenishing valve (421) and the protective cover (420) is used for protecting the gas replenishing valve (421).

6. The constant pressure water supply system with automatic pressure relief function as claimed in claim 1, characterized in that: The invention also comprises a switch display cabinet (101), wherein an HMI (102) is arranged above the front end of the switch display cabinet (101), a buzzer (105) is installed below the HMI (102), a cabinet door (104) is installed below the front end of the switch display cabinet (101), and the cabinet door (104) is opened by a door lock (103); a control unit of the switch display cabinet (101) communicates with a digital integrated controller (107) on a booster pump group (106) through CAN communication, and transmits the operating data and status of the booster pump group (106) to the HMI (102) through CAN communication for real-time interaction.

7. The constant pressure water supply system with automatic pressure relief function as claimed in claim 6, characterized in that: The motor box on the booster pump group (106) is connected to a metal hose (330), the other end of the metal hose (330) is connected to a metal pipe (332), the metal pipe (332) is fixed by a clamp (331), one end of the cable in the metal pipe (332) is connected to a motor terminal, and the other end of the cable in the metal pipe (332) is connected to a power terminal of a switch display cabinet (101).

8. The constant pressure water supply system with automatic pressure relief function as claimed in claim 6, characterized in that: The digital integrated controller (107) is placed on a single pump for backpack installation, and the booster pump group (106) drives the built-in impeller of the pressure-resistant barrel under the output drive of the digital integrated controller (107), thereby squeezing the fluid in the water inlet main pipe (310) and outputting it to the water outlet main pipe (318).

9. The constant pressure water supply system with automatic pressure relief function as claimed in claim 1, characterized in that: The booster pump group (106) is fixed on the pump group base (314), the pump group base (314) is fixed to the cover plate base (313), the other end of the cover plate base (313) is fixed to the cover plate (202) by screws, and the upper sealing plate (201) is fixed on the cover plate (202), and the lower sealing plate (203) is fixed below the cover plate (202).

10. The constant pressure water supply system with automatic pressure relief function as claimed in claim 9, characterized in that: The lower sealing plate (203) is pre-set with an inlet pressure sensor hole (204), a pre-formed hole one (205), a pre-formed hole two (206), and a pre-formed hole three (207); the inlet pressure sensor hole (204) and the pre-formed hole one (205) are used to install an outlet main pressure sensor (108); the pre-formed hole two (206) is used to install an outlet electric contact pressure gauge (109); and the pre-formed hole three (207) is used to install an outlet backup pressure sensor (110); the outlet main pressure sensor (108) and the outlet backup pressure sensor (110) have the same structure.

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