Nested constant-pressure water supply system structure

Abstract

The utility model relates to a nested constant pressure water supply system structure which comprises a constant pressure water supply unit and a nested shell structure, the constant pressure water supply unit is assembled in the nested shell structure in an embedded mode, the constant pressure water supply unit comprises a water inlet header pipe, a booster pump set and a water outlet header pipe, and the water inlet header pipe is connected with a water inlet flexible connector through a water inlet ball valve. The other end of the water inlet flexible connector is fixed with the booster pump group through a flange; the water outlet main pipe is connected with an outlet flexible connector through an outlet ball valve, the other end of the outlet flexible connector and the booster pump set are fixed through a flange, and a check valve is arranged between the outlet flexible connector and the booster pump set; the booster pump set is composed of at least two booster pumps arranged in parallel, the booster pumps are connected with a motor, and a frequency converter is installed on the motor in a backpack mode and connected with the motor through CAN communication. Compared with the prior art, the utility model has the advantages that external circuits and pipelines are protected in a hidden manner, so that the damage risk caused by external arrangement is reduced, and the problem of high energy consumption in operation of a pump set is solved.

Description

[Technical field]

[0001] The utility model relates to the technical field of variable frequency constant pressure water supply, in particular to a nested constant pressure water supply system structure. [Background Technology]

[0002] At present, with the development of technology, more and more manufacturers are investing in projects with simple structure, rough process, external lines and other production methods. However, long-term operation may lead to high system energy consumption and damage to external lines, which become hidden dangers. Therefore, how to update the structure, reduce the risk of damage caused by external placement and reduce the energy consumption of system operation has become a technical problem that needs to be solved urgently. [Contents of the utility model]

[0003] The purpose of the present utility model is to solve the above-mentioned deficiencies and provide a nested constant pressure water supply system structure. The constant pressure water supply unit is covered by a nested shell structure, and the constant pressure water supply unit is embedded and assembled in the nested shell structure, so that the external lines and pipelines are hidden and protected, thereby reducing the risk of damage caused by the external placement and reducing the high energy consumption problem of the pump group operation.

[0004] In order to achieve the above-mentioned purpose, a nested constant pressure water supply system structure is designed, including a constant pressure water supply unit and a nested shell structure, wherein the constant pressure water supply unit is embedded and assembled in the nested shell structure, and the nested shell structure covers the constant pressure water supply unit; the constant pressure water supply unit includes a water inlet main pipe 710, a booster pump group and a water outlet main pipe 701, wherein the water inlet main pipe 710 is connected to the water inlet soft connection 708 through a water inlet ball valve 709, and the water inlet soft connection 708 is fixed to the water inlet flange on the water inlet ball valve 709 by bolts, and the other end of the water inlet soft connection 708 is flange-fixed to the booster pump group; the water outlet main pipe 701 is connected to the outlet soft connection 705 through the outlet ball valve 704, The outlet flexible connection 705 and the water outlet flange on the outlet ball valve 704 are fixed by bolts, and the other end of the outlet flexible connection 705 is flange-fixed to the booster pump group. A check valve 706 is installed between the outlet flexible connection 705 and the booster pump group, and the check valve 706 is used to prevent the fluid from flowing back when the booster pump group stops. The check valve 706 is a clamp-type check valve; the booster pump group is composed of at least two booster pumps arranged in parallel, and the booster pump is connected to the motor 401. The motor 401 is back-mounted with a frequency converter 206, and the frequency converter 206 is connected to the motor 401 via CAN communication. The motor 401 drives the booster pump to boost pressure and thus achieve constant water outlet pressure.

[0005] Furthermore, the nested shell structure includes a side plate 1 809, a side plate 2 813, a top plate 1 802, a top plate 2 811, a top side wing plate inlet 812, a top side wing plate outlet 803, an inlet and outlet water pipe connector 804, a base connector 805, a square tube base 806, a bent bottom plate 807, a cover plate 1 801, a cover plate 2 810 and a sealing plate 808, the inlet and outlet water pipe connector 804, the base connector 805 are connected to the square tube base 806, the inlet main pipe 710 and the outlet main pipe 701 are supported and fixed on the inlet and outlet water pipe connector 804, and the pump group base 303 is connected to the base. The connecting piece 805 is fixed with bolts, the bent bottom plate 807 is connected to the square tube base 806, the side panel 1 809, the side panel 2 813, the top side wing plate inlet 812, and the top side wing plate outlet 803 are fixed on the bent bottom plate 807, the top plate 1 802 and the top plate 2 811 are embedded between the top of the top side wing plate inlet 812 and the top of the top side wing plate outlet 803, and are fixed to form a nested outer shell frame, the cover plate 1 801 and the cover plate 2 810 are respectively embedded in the top plate 1 802 and the top plate 2 811 to form a hidden state, and the water inlet main pipe 710 and the water outlet main pipe 701 are encapsulated with sealing plates 808 on both sides.

[0006] Furthermore, an outlet three-way valve 703 is installed on the water outlet main pipe 701, and the outlet three-way valve 703 is connected to an outlet pressure gauge 702, and the outlet pressure gauge 702 is used to check the outlet pressure. The outlet three-way valve 703 is provided with an outlet pressure sensor, and the outlet pressure sensor is used to monitor the outlet pressure.

[0007] Furthermore, the booster pump group is fixed on the pump group base 303, and the pump group base 303 is provided with pump group fixing holes 304. The booster pump group is fixed to the fixed welding nuts at the bottom of the pump group base 303 by bolts passing through the pump group fixing holes 304. A shock-absorbing pad 707 is sandwiched between the booster pump group and the pump group base 303. The shock-absorbing pad 707 is used to offset the vibration generated when the booster pump group is in operation.

[0008] Furthermore, an inlet short-circuit thread 301 is arranged between the water inlet main pipe 710 and the water inlet ball valve 709, one end of the inlet short-circuit thread 301 is fixed to the water inlet main pipe 710, and the other end of the inlet short-circuit thread 301 is tightened with the water inlet ball valve 709, and an outlet short-circuit thread 302 is arranged between the water outlet main pipe 701 and the outlet ball valve 704, one end of the outlet short-circuit thread 302 is fixed to the water outlet main pipe 701, and the other end of the outlet short-circuit thread 302 is tightened with the outlet ball valve 704.

[0009] Furthermore, the front of the frequency converter 206 is provided with an operating status indicator light 207, a digital tube display screen 208 and a setting button 209. The operating status indicator light 207 is used to display the operating status of the frequency converter 206, the digital tube display screen 208 is used to display pressure and set parameters, and the setting button 209 is used to set parameter calibration values.

[0010] Furthermore, the motor 401 is installed with a motor hanging ring 101 and a motor terminal box 102, the inverter 206 is mounted on the motor terminal box 102 in a piggyback manner, and the motor terminal box 102 is provided with a heat dissipation structure 502, which is used to dissipate the heat generated when the inverter 206 is running.

[0011] Furthermore, a protective cover 603 is provided on the outer cover of the coupling between the motor 401 and the booster pump, and an exhaust valve 601 is installed on the protective cover 603. The ends of the water inlet main pipe 710 and the water outlet main pipe 701 are respectively installed with an inlet blind plate 501 and an outlet blind plate 503.

[0012] Furthermore, it also includes a control cabinet 205, wherein an air intake shutter 201 for air intake is provided at the bottom of the front side of the control cabinet 205, a buzzer 202 for triggering an external alarm and an HMI touch screen 203 for setting and displaying operating data are provided at the middle of the front side of the control cabinet 205, the HMI touch screen 203 is electrically connected to the booster pump group, and a control cabinet hanging ring 204 is installed on the top of the control cabinet 205.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] (1) The utility model adopts a new structural design in terms of system structure, and uses modular sheet metal parts for embedded assembly to hide external circuits and pipes for protection, thereby reducing the risk of damage caused by external placement. At the same time, it optimizes the aesthetics visually, making the overall proportion effect more coordinated;

[0015] (2) The utility model uses municipal pipe networks, pools, and water tanks as fluid transfer, and cooperates with constant pressure water supply units to ensure constant pressure water supply for residents and special occasions, and achieves the goal of reducing energy consumption and secondary pollution of drinking water under the premise of constant water supply pressure;

[0016] (3) The utility model starts the booster pump group to supplement the pressure. When the pressure of a single pump reaches 50Hz and still cannot meet the required pressure, the standby pump group is automatically put into use to achieve the efficiency of the booster pump group, thereby reducing the energy consumption of the system;

[0017] (4) The nested shell structure of the utility model covers the constant pressure water supply unit, improves the product process, and also prefabricates the pipelines and wires and cables;

[0018] (5) The utility model can also optimize and upgrade the control system, remove the original unreasonable control functions, add corresponding upgraded products that can meet the needs of the market and users, and effectively reduce the energy consumption of the operation on the system with the same power;

[0019] In summary, the utility model adopts a full-frequency constant-pressure water supply with new technology and new structure to achieve stable and constant pressure working conditions, so that external lines and pipelines can be hidden for protection, reducing the risk of damage caused by external placement, reducing the investment in pump groups and reducing the energy consumption of the system. At the same time, the proportion of the external structure is also involved to make the system more coordinated and beautiful, which is worthy of promotion and application. [Drawings]

[0020] Figure 1 It is a left-side structural schematic diagram of the utility model;

[0021] Figure 2 It is a front structural schematic diagram of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 5 It is a schematic diagram of the top view structure of the utility model;

[0025] Figure 6 It is a rear view structural schematic diagram of the utility model;

[0026] Figure 7 This is a three-dimensional structure diagram of the utility model. Figure 2 ;

[0027] Figure 8 It is a schematic diagram of the exploded structure of the nested shell structure of the utility model;

[0028] In the figure: 101, motor lifting ring; 102, motor junction box; 201, air intake shutter; 202, buzzer; 203, HMI touch screen; 204, control cabinet lifting ring; 205, control cabinet; 206, inverter; 207, operating status indicator; 208, digital tube display; 209, setting button; 301, inlet short-circuit thread; 302, outlet short-circuit thread; 303, pump unit base; 304, pump unit fixing hole; 401, motor; 501, inlet blind plate; 502, heat dissipation structure; 503, outlet blind plate; 601, exhaust valve; 603, protective cover; 701, Water outlet main pipe; 702, outlet pressure gauge; 703, outlet three-way valve; 704, outlet ball valve; 705, outlet flexible connection; 706, check valve; 707, shock pad; 708, water inlet flexible connection; 709, water inlet ball valve; 710, water inlet main pipe; 801, cover plate one; 802, top plate one; 803, top plate side wing plate outlet; 804, inlet and outlet water pipe connector; 805, base connector; 806, square tube base; 807, bent bottom plate; 808, sealing plate; 809, side plate one; 810, cover plate two; 811, top plate two; 812, top side wing plate inlet; 813, side plate two. [Specific implementation method]

[0029] As shown in the accompanying drawings, the utility model provides a nested constant pressure water supply system structure, including a constant pressure water supply unit and a nested shell structure, the constant pressure water supply unit is embedded and assembled in the nested shell structure, and the nested shell structure covers the constant pressure water supply unit; the constant pressure water supply unit includes an inlet main pipe 710, a booster pump group and an outlet main pipe 701, the inlet main pipe 710 is connected to the inlet soft connection 708 through an inlet ball valve 709, the inlet soft connection 708 and the inlet flange on the inlet ball valve 709 are fixed by bolts, and the other end of the inlet soft connection 708 is flange-fixed to the booster pump group; the outlet main pipe 701 is connected to the outlet soft connection 705 through the outlet ball valve 704, the outlet soft connection 705 and the outlet flange on the outlet ball valve 704 are fixed by bolts, and the other end of the outlet soft connection 705 is fixed to the outlet ball valve 704. The booster pump group is flange fixed, and a check valve 706 is installed between the outlet soft connection 705 and the booster pump group. The check valve 706 prevents the fluid from flowing back when the booster pump group stops. The check valve 706 is a clamp-type check valve; an outlet three-way valve 703 is installed on the water outlet main pipe 701, and the outlet three-way valve 703 is connected to the outlet pressure gauge 702. The outlet pressure gauge 702 is used to check the outlet pressure. The outlet three-way valve 703 is provided with an outlet pressure sensor, and the outlet pressure sensor is used to monitor the outlet pressure; the booster pump group is composed of at least two booster pumps arranged in parallel, and the booster pump is connected to the motor 401. The motor 401 is back-mounted with a frequency converter 206, and the frequency converter 206 is connected to the motor 401 through CAN communication. The motor 401 drives the booster pump to boost pressure and thus achieve constant outlet water pressure.

[0030] The nested shell structure includes a side plate 1 809, a side plate 2 813, a top plate 1 802, a top plate 2 811, a top side wing plate inlet 812, a top side wing plate outlet 803, an inlet and outlet pipe connector 804, a base connector 805, a square tube base 806, a bent bottom plate 807, a cover plate 1 801, a cover plate 2 810 and a sealing plate 808. The inlet and outlet pipe connector 804 and the base connector 805 are connected to the square tube base 806. The inlet main pipe 710 and the outlet main pipe 701 are supported and fixed on the inlet and outlet pipe connector 804. The pump unit base 303 is connected to the base. The connecting piece 805 is fixed with bolts, the bent bottom plate 807 is connected to the square tube base 806, the side plate 1 809, the side plate 2 813, the top side wing plate inlet 812, and the top side wing plate outlet 803 are fixed on the bent bottom plate 807, the top plate 1 802 and the top plate 2 811 are embedded between the top of the top side wing plate inlet 812 and the top of the top side wing plate outlet 803, and are fixed to form a nested outer shell frame, the cover plate 1 801 and the cover plate 2 810 are respectively embedded in the top plate 1 802 and the top plate 2 811 to form a hidden state, and the water inlet main pipe 710 and the water outlet main pipe 701 are encapsulated with sealing plates 808 on both sides.

[0031] The booster pump group is fixed on the pump group base 303, and pump group fixing holes 304 are distributed on the pump group base 303. The booster pump group is fixed to the fixed welding nuts at the bottom of the pump group base 303 by bolts passing through the pump group fixing holes 304. A shock-absorbing pad 707 is sandwiched between the booster pump group and the pump group base 303. The shock-absorbing pad 707 is used to offset the vibration generated when the booster pump group is running. A motor lifting ring 101 and a motor junction box 102 are installed on the motor 401, and the frequency converter 206 is mounted on the motor junction box 102 in a piggyback manner. A heat dissipation structure 502 is provided at the motor junction box 102, and the heat dissipation structure 502 is used to dissipate the heat generated when the frequency converter 206 is running; a protective cover 603 is provided on the outer cover of the coupling between the motor 401 and the booster pump, and an exhaust valve 601 is installed on the protective cover 603, and an inlet blind plate 501 and an outlet blind plate 503 are respectively installed at the ends of the water inlet main pipe 710 and the water outlet main pipe 701.

[0032] An inlet short-circuit thread 301 is arranged between the water inlet main pipe 710 and the water inlet ball valve 709, one end of the inlet short-circuit thread 301 is fixed to the water inlet main pipe 710, and the other end of the inlet short-circuit thread 301 is tightened with the water inlet ball valve 709, and an outlet short-circuit thread 302 is arranged between the water outlet main pipe 701 and the outlet ball valve 704, one end of the outlet short-circuit thread 302 is fixed to the water outlet main pipe 701, and the other end of the outlet short-circuit thread 302 is tightened with the outlet ball valve 704.

[0033] It also includes a control cabinet 205, which has an air intake shutter 201 for air intake at the bottom of the front side of the control cabinet 205, a buzzer 202 for triggering an external alarm and an HMI touch screen 203 for setting and displaying operating data in the middle of the front side of the control cabinet 205, the HMI touch screen 203 is electrically connected to the booster pump group, and a control cabinet hanging ring 204 is installed on the top of the control cabinet 205; an operating status indicator light 207, a digital tube display screen 208 and a setting button 209 are arranged on the front side of the frequency converter 206, the operating status indicator light 207 is used to display the operating status of the frequency converter 206, the digital tube display screen 208 is used to display pressure and set parameters, and the setting button 209 is used to set parameter calibration values.

[0034] The nested constant pressure water supply system structure described in the utility model mainly includes a switch display cabinet (control cabinet), a digital integrated controller, a constant pressure water supply unit, and a nested shell structure; the digital integrated controller is used as the core to perform system monitoring, control, collection and other data quantification to realize a full frequency conversion constant pressure water supply system; the municipal pipe network, pool, and water tank are used as fluid transfer, combined with the constant pressure water supply unit to ensure constant pressure water supply for residents and special occasions, and to achieve energy consumption reduction and secondary pollution of drinking water under the premise of constant water supply pressure; the total water inlet pipeline and the water storage unit are connected to the water storage unit. When the feedback value of the outlet water pressure sensor is less than the HMI calibration value on the switch display cabinet, the system starts the pump group to make up the pressure. When the operating frequency of a single pump reaches 50Hz, the pressure still cannot meet the demand pressure, the system automatically puts the standby pump group into use, and the frequency of the single pump that has been put into use is reduced to maintain a constant frequency with the booster pump group. While increasing the number of pump groups, the efficiency of the pump groups is evenly distributed, thereby reducing the energy consumption of the system. The nested shell structure covers the constant pressure water supply unit, improves the product process, and also prefabricates the pipelines and wires and cables.

[0035] The switch display cabinet includes an HMI touch screen display, which uses a digital integrated controller to perform system control, data collection, and fault alarm triggering to achieve unattended pressurization system and constant pressure. The collected data can intuitively display the current system operation data through the HMI touch screen, and can also calibrate the pressure according to the on-site working conditions and set the pressure in different time periods for peak and valley conditions. While improving efficiency, it reduces the investment in pump groups to reduce the energy consumption of pump groups. At the same time, the collected data can be shared with the external collection cabinet and the remote central control platform through CAN communication and RS485 port to achieve real-time monitoring and remote control.

[0036] The digital integrated controller includes a digital integrated frequency converter and a heat dissipation structure. The digital integrated controller is placed on the motor junction box of a single pump, and the heat dissipation is carried out by natural ventilation through the heat dissipation structure and a peripheral driven axial flow fan. In addition to reducing the heat generated by the operation of the digital integrated controller, the service life of the circuit board inside the controller can also be extended.

[0037] The constant pressure water supply unit includes the water inlet pipeline part, the booster pump group part and the water outlet pipeline part. The water inlet pipeline part includes the water inlet main pipeline, ball valve, soft connection, short connection, etc. The water inlet main pipeline is connected to the water storage unit, the short connection with threaded port is fixed to the water inlet main pipe, the threaded short connection is tightened with one end of the ball valve, the other end of the ball valve is fixed with the threaded short connection with flange, the short connection flange is fixed with the soft connection by bolts, and the soft connection is fixed with the flange of the booster pump group, so as to realize the assembly of the water inlet pipeline. The outlet water pipeline also includes an outlet water main pipeline, a ball valve, a flexible connection, a short-circuit, a check valve, etc. The outlet water main pipeline is connected to the booster pump group, the short-circuit with a threaded port is fixed to the outlet water main pipe, the threaded short-circuit is tightened to one end of the ball valve, and the other end of the ball valve is fixed to the threaded short-circuit with a flange. The short-circuit flange and the flexible connection are fixed by bolts, and the flexible connection is fixed to the flange of the booster pump group. A clamp-type check valve is embedded between the two to prevent the system fluid from flowing back after the pump group stops running, thereby realizing the assembly of the outlet water pipeline. At the same time, the inlet and outlet water pressure sensors are used for monitoring to promptly determine whether the inlet water is in a pressurized or non-pressurized state, which is beneficial to protect the operation of the unit and prevent the pump group from idling and causing heat and damage to the pump group.

[0038] The nested shell structure includes side panel 1, side panel 2, base connector, inlet and outlet water pipe connector, top panel 1, top panel 2, top side wing inlet, top panel side wing outlet, square tube base, sealing plate, cover panel 1, cover panel 2 and bent bottom plate; the base connector and inlet and outlet water pipe connector are connected with the square tube base; the inlet pipe support is fixed on the inlet and outlet water pipe connector, the pump unit base is fixed with bolts to the base connector, and the bent bottom plate is connected with the square tube base, and a base is formed by the combination of the above parts, on this basis, the side panel 1, side panel 2, top side wing inlet and top panel side wing outlet are fixed on the bent bottom plate, and then the top panel 1 and top panel 2 are embedded; after being fixed by screws, a nested shell frame is formed, and the cover panel 1 and cover panel 2 are embedded in the top panel 1 and top panel 2 to form a hidden state, and after the sealing plates on both sides of the inlet and outlet are fixed, the entire base forms a complete set of nested shell structures.

[0039] The utility model is further described below in conjunction with the accompanying drawings:

[0040] It is worth noting that the application field of the utility model is not limited, that is, it includes the field of water supply technology.

[0041] As attached Figure 1 As shown, the motor lifting ring 101 is used for installation and maintenance. When replacement is required, the motor can be directly installed and replaced by lifting tools. The motor terminal box 102 is used to connect the incoming cable of the motor and also to fix the support of the backpack inverter.

[0042] As attached Figure 2As shown, the control cabinet is provided with an air intake shutter 201 for air intake, an external buzzer 202 for triggering an alarm, an HMI touch screen 203 for setting and displaying operating data, a control cabinet lifting ring 204 for installing and lifting the control cabinet, a control cabinet 205 with a built-in electrical component structure, a backpack-mounted inverter 206, an operating status indicator light 207 for displaying the operating status of the inverter, a digital display tube 208 for displaying pressure and setting parameter entry, and a setting button 209 for setting parameter calibration values.

[0043] As attached Figure 3 As shown, the inlet short-circuit thread 301 and the outlet short-circuit thread 302 are connected to one end of the ball valve, and the other end is connected to the soft connection, which is conducive to the corresponding fine adjustment of the pipeline system when the pump group vibrates during operation or the on-site pipeline is not aligned and deviates, thereby ensuring the normal use of the system; the pump group base 303 is used to fix the pump group, and the pump group is fixed to the fixed welding nut at the bottom of the base by bolts passing through the pump group fixing hole 304, and the two are clamped with shock-absorbing pads to play a role in fixing and shock-proofing.

[0044] As attached Figure 4 As shown, when the outlet water pressure is lower than the set pressure value, the inverter starts the motor 401 through CAN communication, thereby driving the pump group to increase the pressure, so as to achieve a constant outlet water pressure of the system.

[0045] As attached Figure 5 As shown, when the direction of the inlet and outlet water pipes needs to be adjusted according to the actual working conditions on site, the inlet blind plate 501 and the outlet blind plate 503 can be replaced for installation to reduce the possibility of the system being unable to be installed due to the reverse installation position. The heat dissipation structure 502 is mainly used for the heat generated when the inverter is running, and the heat is dissipated through natural ventilation or forced start-up of the axial flow fan.

[0046] As attached Figure 6 As shown, when the water pump is put into operation, a certain amount of air will be stored inside the pipeline. The air inside will be discharged through the exhaust valve 601 to reduce the residual air inside the pump group, which will cause cavitation damage to the pump group during accelerated operation; the coupling connects the motor and the bearing. When maintenance is required, the protective cover 603 will be removed and replaced. During normal operation, it prevents the parts of the coupling from being thrown out during high-speed operation, which plays a protective role.

[0047] As attached Figure 7As shown, the outlet main pipe 701 is connected to the water storage unit to replenish the system with sufficient fluid. When the outlet pressure needs to be checked, the outlet three-way valve 703 is connected to the outlet pressure gauge 702, wherein the outlet pressure sensor is also placed on the three-way valve. When monitoring the actual pressure situation, it is checked through the outlet pressure gauge 702. The outlet ball valve 704 is threadedly connected to the outlet main pipe 701, and the outlet soft connection 705 is bolted to the flange on the fixed ball valve 704. The other end of the water outlet soft connection 705 is flange-fixed to the pump group. When the pump unit is fixed to the pump unit base, a check valve 706 is clamped between the two to prevent the fluid from flowing back when the pump unit stops; when the pump unit is fixed to the pump unit base, a shock-absorbing pad is clamped between the two to offset the vibration generated when the pump unit is running, so as to protect the pump unit from damage; the water inlet ball valve 709 is threadedly connected to the water inlet main pipe 710, the water inlet soft connection 708 is bolted to the flange on the fixed ball valve 709, and the other end of the water outlet soft connection 708 is flange-fixed to the pump unit; through the combination of the above components, a set of booster pump unit with maintenance, operation and protection functions is completed.

[0048] As attached Figure 8 As shown, the base connector 805 and the water inlet and outlet pipe connector 804 are connected to the square tube base 806; the water inlet pipe support is fixed on the water inlet and outlet pipe connector 804, the pump group base is fixed to the base connector with bolts, and the bent bottom plate 807 is connected to the square tube base 806. A base is formed by the combination of the above parts, on this basis, the side plate 1 809, the side plate 2 813, the top side wing plate inlet 812, and the top side wing plate outlet 803 are fixed on the bent bottom plate, and then the top plate 1 802 and the top plate 2 811 are embedded; after being fixed by screws, a nested shell frame is formed, and the cover plate 1 801 and the cover plate 2 810 are embedded in the top plate 1 802 and the top plate 2 811 to form a hidden state. At the same time, after the sealing plates 808 on both sides of the water inlet and outlet are fixed with screws, the entire base forms a complete set of nested shell structures.

[0049] 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. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0050] 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 nested constant pressure water supply system structure, characterized in that: The invention comprises a constant pressure water supply unit and a nested shell structure, wherein the constant pressure water supply unit is embedded and assembled in the nested shell structure, and the nested shell structure covers the constant pressure water supply unit; the constant pressure water supply unit comprises a water inlet main pipe (710), a booster pump unit and a water outlet main pipe (701), wherein the water inlet main pipe (710) is connected to a water inlet soft connection (708) via a water inlet ball valve (709), wherein the water inlet soft connection (708) is fixed to a water inlet flange on the water inlet ball valve (709) by bolts, and the other end of the water inlet soft connection (708) is fixed to the booster pump unit by flange; the water outlet main pipe (701) is connected to an outlet soft connection (705) via an outlet ball valve (704), wherein the outlet soft connection (705) is fixed to an outlet ball valve (705). The outlet flange on the outlet ball valve (704) is fixed by bolts, and the other end of the outlet flexible connection (705) is flange-fixed to the booster pump group. A check valve (706) is installed between the outlet flexible connection (705) and the booster pump group, and the check valve (706) is used to prevent the fluid from flowing back when the booster pump group stops. The check valve (706) is a clamp-type check valve; the booster pump group is composed of at least two booster pumps arranged in parallel, and the booster pump is connected to the motor (401). The motor (401) is back-mounted with a frequency converter (206), and the frequency converter (206) is connected to the motor (401) via CAN communication. The motor (401) drives the booster pump to increase pressure and thus achieve constant water outlet pressure.

2. The nested constant pressure water supply system structure according to claim 1, characterized in that: The nested shell structure comprises a side plate 1 (809), a side plate 2 (813), a top plate 1 (802), a top plate 2 (811), a top side wing plate inlet (812), a top side wing plate outlet (803), an inlet and outlet water pipeline connector (804), a base connector (805), a square tube base (806), a bent bottom plate (807), a cover plate 1 (801), a cover plate 2 (810) and a sealing plate (808); the inlet and outlet water pipeline connector (804) and the base connector (805) are connected to the square tube base (806); the inlet main pipe (710) and the outlet main pipe (701) are supported and fixed on the inlet and outlet water pipeline connector (804); the base connector (805) is connected to the pump group base. The base (303) is fixed with bolts, the bent bottom plate (807) is connected to the square tube base (806), the side plate one (809), the side plate two (813), the top side wing plate inlet (812), and the top side wing plate outlet (803) are fixed on the bent bottom plate (807), the top plate one (802) and the top plate two (811) are embedded between the top of the top side wing plate inlet (812) and the top of the top side wing plate outlet (803), and after being fixed, a nested shell frame is formed, the cover plate one (801) and the cover plate two (810) are respectively embedded in the top plate one (802) and the top plate two (811) to form a hidden state, and the water inlet main pipe (710) and the water outlet main pipe (701) are encapsulated with sealing plates (808) on both sides.

3. The nested constant pressure water supply system structure according to claim 1, characterized in that: The outlet main pipe (701) is provided with an outlet three-way valve (703), the outlet three-way valve (703) is connected to an outlet pressure gauge (702), the outlet pressure gauge (702) is used to check the outlet pressure, and the outlet three-way valve (703) is provided with an outlet pressure sensor, the outlet pressure sensor is used to monitor the outlet pressure.

4. The nested constant pressure water supply system structure according to claim 1, characterized in that: The booster pump assembly is fixed on a pump assembly base (303), and pump assembly fixing holes (304) are distributed on the pump assembly base (303). The booster pump assembly is fixed by bolts passing through the pump assembly fixing holes (304) and fixed welding nuts at the bottom of the pump assembly base (303). A shock-absorbing pad (707) is sandwiched between the booster pump assembly and the pump assembly base (303), and the shock-absorbing pad (707) is used to offset the vibration generated when the booster pump assembly is in operation.

5. The nested constant pressure water supply system structure according to claim 1, characterized in that: An inlet short-circuit thread (301) is provided between the water inlet main pipe (710) and the water inlet ball valve (709), one end of the inlet short-circuit thread (301) is fixed to the water inlet main pipe (710), and the other end of the inlet short-circuit thread (301) is tightened with the water inlet ball valve (709); an outlet short-circuit thread (302) is provided between the water outlet main pipe (701) and the outlet ball valve (704), one end of the outlet short-circuit thread (302) is fixed to the water outlet main pipe (701), and the other end of the outlet short-circuit thread (302) is tightened with the outlet ball valve (704).

6. The nested constant pressure water supply system structure according to claim 1, characterized in that: The inverter (206) is provided with an operating status indicator light (207), a digital tube display screen (208) and a setting button (209) on the front side. The operating status indicator light (207) is used to display the operating status of the inverter (206), the digital tube display screen (208) is used to display pressure and set parameters, and the setting button (209) is used to set parameter calibration values.

7. The nested constant pressure water supply system structure according to claim 1, characterized in that: The motor (401) is mounted with a motor hanging ring (101) and a motor junction box (102); the frequency converter (206) is mounted on the motor junction box (102) in a piggyback manner; a heat dissipation structure (502) is provided at the motor junction box (102); the heat dissipation structure (502) is used to dissipate heat generated when the frequency converter (206) is in operation.

8. The nested constant pressure water supply system structure according to claim 7, characterized in that: A protective cover (603) is provided on the outer cover of the coupling between the motor (401) and the booster pump, and an exhaust valve (601) is installed on the protective cover (603). An inlet blind plate (501) and an outlet blind plate (503) are installed at the ends of the water inlet main pipe (710) and the water outlet main pipe (701), respectively.

9. The nested constant pressure water supply system structure according to any one of claims 1 to 8, characterized in that: The invention also comprises a control cabinet (205), wherein an air intake shutter (201) for air intake is provided at the bottom of the front of the control cabinet (205), an external buzzer (202) for triggering an alarm and an HMI touch screen (203) for setting and displaying operating data are provided at the middle of the front of the control cabinet (205), wherein the HMI touch screen (203) is electrically connected to the booster pump group, and a control cabinet lifting ring (204) is installed at the top of the control cabinet (205).

Images