Miniature indoor full-frequency-conversion constant-pressure water supply structure

Abstract

The utility model relates to a miniature indoor full-frequency-conversion constant-pressure water supply structure which comprises a double-layer shell structure and a full-frequency-conversion pressurization system, the double-layer shell structure is a double-layer protection structure composed of outer door perspective tempered glass and an inner door, in the full-frequency-conversion pressurization system, one end of an inlet short circuit is connected with a field water inlet pipeline, and the other end of the inlet short circuit is connected with an inlet header pipe; an inlet header pipe is connected with one end of a water inlet ball valve, the other end of the water inlet ball valve is fixed with an inlet flange pup joint, the inlet flange pup joint is connected with a water pump, a frequency converter is installed on a motor of the water pump, and a water outlet of the water pump is connected with the lower end of a three-way check valve, and the upper end of the three-way check valve is communicated with an outlet pressure tank. The three-way check valve is fixed with an outlet flange pup joint through a loose joint, and the other end of the outlet flange pup joint is connected with an outlet header pipe; according to the utility model, the internal structure space is reasonably utilized, so that the requirements of users can be met, the original space can be reused, the space utilization rate is high, the construction difficulty is reduced, and the construction period is shortened.

Description

[Technical field]

[0001] The utility model relates to the technical field of secondary water supply and fire protection, in particular to a micro indoor full-frequency constant-pressure water supply structure. [Background Technology]

[0002] With economic development, traditional gravity water supply and industrial frequency direct start-up methods are gradually being replaced and iterated by fully variable frequency controlled water supply systems; however, due to space and other constraints in the original old city, large-scale booster water supply systems cannot be constructed and installed.

[0003] Therefore, how to meet user needs while reusing the original space has become a technical problem that needs to be solved urgently. [Utility Model Content]

[0004] The purpose of this utility model is to solve the above-mentioned deficiencies and provide a micro indoor full-frequency constant pressure water supply structure. By rationally utilizing its internal structural space, it can meet user needs while realizing the reuse of its original space, with high space utilization, reducing the difficulty of construction and shortening the construction period.

[0005] In order to achieve the above purpose, a micro indoor full-frequency constant pressure water supply structure is designed, including a double-layer shell structure and a full-frequency boosting system. The double-layer shell structure includes a shell, and the shell is composed of an outer door perspective tempered glass 103 and an inner door 106 to form a double-layer protection structure. The outer door perspective tempered glass 103 is connected to the shell by a hinge 108. The full-frequency boosting system includes an inlet short circuit 207, an inlet main pipe 206, an outlet main pipe 211 and a water pump 117. One end of the inlet short circuit 207 is reserved for connection with the on-site water inlet pipeline, and the other end of the inlet short circuit 207 is connected to the inlet main pipe 206. The inlet main pipe 206 is connected to one end of the water inlet ball valve. The other end of the valve is fixed to the inlet flange short-circuit 119, and the inlet flange short-circuit 119 is connected to the water pump 117 by means of a flange connection. The motor 109 of the water pump 117 is equipped with a frequency converter 105. The water outlet of the water pump 117 is connected to the lower end of the three-way check valve 107, and the upper end of the three-way check valve 107 is connected to the outlet pressure tank 1 202 and / or the outlet pressure tank 2 203. The three-way check valve 107 is fixed to the outlet flange short-circuit 112 by a flexible joint, and the other end of the outlet flange short-circuit 112 is connected to the outlet main pipe 211, and the outlet main pipe 211 is connected to the outlet short-circuit 210. The other end of the outlet short-circuit 210 is connected to the user main pipe.

[0006] Furthermore, a cabinet top 101 is provided on the top of the shell, a buckle 114 is installed on the top of the side of the shell, and the buckle 114 is used to hoist the shell. A guide rail is installed in the middle of the side of the shell, and a tray 115 is slidably connected to the guide rail through a pulley 116. A push-pull handle 104 is installed on the tray 115, and the push-pull handle 104 pushes and pulls the tray 115 through the pulley 116 on the guide rail.

[0007] Furthermore, a temperature and humidity sensor is provided in the shell, and the temperature and humidity in the cabinet are detected by the temperature and humidity sensor. The temperature and humidity sensor is electrically connected to the axial flow fan 301, and the axial flow fan 301 is fixed on the heat dissipation cover 302. The heat dissipation cover 302 is installed on the upper back of the shell, and a filter 304 is installed on the lower back of the shell. The filter 304 and the heat dissipation cover 302 form air convection.

[0008] Furthermore, an outlet pressure sensor 111 is installed between the three-way check valve 107 and the outlet flange short-circuit 112. The outlet pressure sensor 111 is used for pressure detection. The outlet pressure sensor 111 is electrically connected to the frequency converter 105. After the frequency converter 105 drives the motor 109 to run, it drives the water pump 117 to extract the fluid inside the inlet main pipe 206 for pressure replenishment.

[0009] Furthermore, the outlet flange short circuit 112 is bolted to another outlet flange short circuit, the other end of the other outlet flange short circuit is connected to the ball valve 113, and the inner thread on the ball valve 113 is fixed to the outer thread of the outlet main pipe 211.

[0010] Furthermore, an outlet pressure gauge 208 and an outlet ball valve 209 are installed on the outlet main pipe 211. One end of the outlet ball valve 209 is connected to the outlet main pipe 211, and the other end of the outlet ball valve 209 is connected to the outlet pressure gauge 208. The outlet pressure gauge 208 displays the pressure on the outlet main pipe 211 in real time when the outlet ball valve 209 is opened, and performs maintenance when the outlet ball valve 209 is closed.

[0011] Furthermore, a support chassis 1 405 and a support chassis 2 403 are provided at the bottom of the shell, and an inlet support 120 and an outlet support 118 are fixed on the support chassis 1 405 and the support chassis 2 403 respectively. The inlet support 120 and the outlet support 118 are both height-adjustable by their bolts, and the clamps on the inlet support 120 and the outlet support 118 clamp and fix the inlet main pipe 206 and the outlet main pipe 211 respectively, and support the inlet main pipe 206 and the outlet main pipe 211.

[0012] Furthermore, a fixing hole 401 is provided at the edge of the bottom surface of the shell, and the shell is fixed by the fixing hole 401 and embedded bolts. Drain holes 404 and pump group fixing holes 402 are distributed on the bottom surface of the shell. The drainage holes 404 are used to discharge the overflow fluid to the outside of the shell when water seepage occurs inside the shell. The water pump 117 is fixed to the pump group fixing hole 402 through the base 110. A shock-absorbing pad is installed between the water pump 117 and the base 110, and the shock-absorbing pad is used to prevent the bolts from loosening due to vibration during the operation of the pump group.

[0013] Furthermore, a cabinet door is installed at the lower front end of the shell, and a button lock 205 is installed on the cabinet door, and the button lock 205 is electrically connected to the full-frequency boosting system; a touch screen mounting structure 102 is provided at the upper front end of the shell, and a touch screen 201 is embedded in the touch screen mounting structure 102, and the touch screen 201 is connected to the full-frequency boosting system through a line, and performs real-time data interaction with the full-frequency boosting system through CAN communication.

[0014] Furthermore, a wire trough 204 is preset on the inner wall of the shell, and the power line and control line of the full-frequency boosting system are connected to the upper end terminal through the wire trough 204, and the power line and control line are placed in the wire trough 204.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] (1) The utility model adopts a single pump configuration pressure tank, and places the pressure tank on the single pump, rationally utilizing its internal structural space. At the same time, when one pressure tank is abnormal, the other independent pressure tank can still continue to compensate for the pressure difference of the system;

[0017] (2) The utility model adopts a double-door design, which can effectively reduce noise and visually check the operating status of the system without opening the outer door;

[0018] (3) The utility model adopts a prefabricated installation method. After the equipment arrives at the site, it only needs to connect the water inlet and outlet pipes and the power supply. It is easy to operate and shortens the construction period.

[0019] (4) The utility model adopts a drawer-type compartment design. When adding functions, the redundant components can be placed on the tray. It can also be used to place computers during on-site debugging. When a security system needs to be configured on-site, it can be used to prevent devices such as monitors from being displayed.

[0020] In summary, the utility model reasonably designs the corresponding scheme according to the existing space, adopts a double-door structure for prefabrication and installation for fixation, utilizes the actual inlet and outlet water pipes at the construction site for flange fixation, and at the same time, adopts the incoming power supply at the site for power supply, so that the system can be debugged without the need for a second structure installation. It has the characteristics of short construction period, high space utilization, and full degree of intelligence. It can be seen that the utility model is novel, simple, and reasonably designed. As long as the scheme is optimized according to the actual space on site, its construction is convenient and the operation is simple, which reduces the difficulty of construction and is worthy of promotion and application. [Brief Description of the Drawings]

[0021] Figure 1 It is a side structural schematic diagram of the utility model;

[0022] Figure 2 This is a front view structural diagram of the present utility model;

[0023] Figure 3 It is a schematic diagram of the back structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the base structure of the utility model;

[0025] In the figure: 101, cabinet top; 102, touch screen mounting structure; 103, outer door transparent tempered glass; 104, push-pull handle; 105, inverter; 106, inner door; 107, three-way check valve; 108, hinge; 109, motor; 110, base; 111, outlet pressure sensor; 112, outlet flange short circuit; 113, ball valve; 114, retaining ring; 115, tray; 116, pulley; 117, water pump; 118, outlet support; 119, inlet flange short circuit; 120, inlet support; 2 01. Touch screen; 202. Outlet pressure tank 1; 203. Outlet pressure tank 2; 204. Wire duct; 205. Button lock; 206. Inlet main pipe; 207. Inlet short circuit; 208. Outlet pressure gauge; 209. Outlet ball valve; 210. Outlet short circuit; 211. Outlet main pipe; 301. Axial fan; 302. Heat dissipation cover; 303. Countersunk screw; 304. Filter; 401. Fixing hole; 402. Pump unit fixing hole; 403. Support chassis 2; 404. Drain hole; 405. Support chassis 1. [Specific implementation method]

[0026] As attached Figure 1 To the attached Figure 4As shown, the utility model provides a micro indoor full-frequency constant pressure water supply structure, including a double-layer shell structure and a full-frequency boosting system. The double-layer shell structure includes a shell, and the shell is composed of an outer door perspective tempered glass 103 and an inner door 106 to form a double-layer protection structure. The outer door perspective tempered glass 103 is connected to the shell by a hinge 108. The full-frequency boosting system includes an inlet short circuit 207, an inlet main pipe 206, an outlet main pipe 211 and a water pump 117. One end of the inlet short circuit 207 is reserved for connection with the on-site water inlet pipeline, and the other end of the inlet short circuit 207 is connected to the inlet main pipe 206. The inlet main pipe 206 is connected to one end of the water inlet ball valve. The other end of the ball valve is fixed to the inlet flange short-circuit 119, and the inlet flange short-circuit 119 is connected to the water pump 117 by means of a flange connection. The motor 109 of the water pump 117 is equipped with a frequency converter 105. The water outlet of the water pump 117 is connected to the lower end of the three-way check valve 107, and the upper end of the three-way check valve 107 is connected to the outlet pressure tank 1 202 and / or the outlet pressure tank 2 203. The three-way check valve 107 is fixed to the outlet flange short-circuit 112 by a flexible joint. The other end of the outlet flange short-circuit 112 is connected to the outlet main pipe 211, and the outlet main pipe 211 is connected to the outlet short-circuit 210. The other end of the outlet short-circuit 210 is connected to the user main pipe.

[0027] An outlet pressure sensor 111 is installed between the three-way check valve 107 and the outlet flange short-circuit 112. This sensor is used for pressure detection and is electrically connected to the frequency converter 105. The frequency converter 105 drives the motor 109, which drives the water pump 117 to pump fluid from the inlet manifold 206 to compensate for the pressure. The outlet flange short-circuit 112 is bolted to another outlet flange short-circuit. The other end of the other outlet flange short-circuit is connected to a ball valve 113. The internal thread of the ball valve 113 is fixed to the external thread of the outlet manifold 211. An outlet pressure gauge 208 and an outlet ball valve 209 are installed on the outlet manifold 211. One end of the outlet ball valve 209 is connected to the outlet manifold 211, and the other end is connected to the outlet pressure gauge 208. The outlet pressure gauge 208 displays the pressure on the outlet manifold 211 in real time when the outlet ball valve 209 is open, and allows for maintenance when the outlet ball valve 209 is closed.

[0028] The top of the housing is provided with a cabinet top 101, and a buckle 114 is installed on the top of the side of the housing. Buckle 114 is used to hoist the housing. A guide rail is installed in the middle of the side of the housing. A tray 115 is slidably connected to the guide rail via a pulley 116. A push-pull handle 104 is installed on the tray 115. The push-pull handle 104 pushes and pulls the tray 115 via the pulley 116 on the guide rail. A temperature and humidity sensor is installed in the housing, and the temperature and humidity inside the cabinet are detected by the temperature and humidity sensor. The temperature and humidity sensor is electrically connected to the axial fan 301, which is fixed to the heat dissipation cover 302. The heat dissipation cover 302 is installed on the upper back of the housing. A filter 304 is installed on the lower back of the housing, and the filter 304 and the heat dissipation cover 302 form air convection. A wire groove 204 is preset on the inner wall of the shell, and the power line and control line of the full-frequency boosting system are connected to the wiring terminals at the upper end through the wire groove 204, and the power line and control line are placed in the wire groove 204; a cabinet door is installed at the lower front end of the shell, and a button lock 205 is installed on the cabinet door, and the button lock 205 is electrically connected to the full-frequency boosting system; a touch screen mounting structure 102 is provided at the upper front end of the shell, and a touch screen 201 is embedded in the touch screen mounting structure 102. The touch screen 201 is connected to the full-frequency boosting system through a line, and performs real-time data interaction with the full-frequency boosting system through CAN communication.

[0029] A support chassis 1 405 and a support chassis 2 403 are provided at the bottom of the shell. The inlet support 120 and the outlet support 118 are fixed on the support chassis 1 405 and the support chassis 2 403 respectively. The inlet support 120 and the outlet support 118 are height-adjustable by their bolts. The clamps on the inlet support 120 and the outlet support 118 clamp and fix the inlet main pipe 206 and the outlet main pipe 211 respectively, and support the inlet main pipe 206 and the outlet main pipe 211. A fixing hole 401 is provided at the edge of the bottom surface of the shell, and the shell is fixed by the fixing hole 401 and the embedded bolts. Drain holes 404 and pump group fixing holes 402 are distributed on the bottom surface of the shell. The drainage hole 404 is used to discharge the overflow fluid to the outside of the shell when water seepage occurs inside the shell. The water pump 117 is fixed to the pump group fixing hole 402 through the base 110. A shock-absorbing pad is installed between the water pump 117 and the base 110, and the shock-absorbing pad is used to prevent the bolts from loosening due to vibration during the operation of the pump group.

[0030] The micro indoor full-frequency constant pressure water supply structure described in the present invention includes a double-layer shell structure and a full-frequency boosting system. Specifically, the double-layer shell structure is formed by welding the cabinet top 101 and then placed on the top of the shell. The shell structure is composed of an outer door transparent tempered glass 103 and an inner door 106 to form a double layer of protection. The outer door transparent tempered glass 103 is connected to the shell with a hinge 108; when the system needs to be hoisted or pushed and pulled, it can be fixed with its buckle 114. When the system needs to be tested, the push-pull handle 104 pulls out and pushes the tray 115 through the pulley 116 on the guide rail. When pulled out, the test computer can be placed on the tray for operation. When the increase in functions leads to insufficient layout space, some components can be fixed to the tray to extend the length of the reserved communication and signal lines; the power line and control line connection of the boosting system When the wiring terminals are at the upper end, they can be placed in the reserved wire groove 204. When the boost system is under maintenance, the button lock 205 is pressed to enter the interior of the shell for inspection. When the temperature and humidity sensor in the cabinet detects the temperature and humidity in the cabinet, if the temperature and humidity feedback value exceeds the target value, the axial flow fan 301 is started to circulate the air flow. The axial flow fan is fixed on the heat dissipation cover 302, and the filter 304 is installed at the lower end of the shell. The air intake here forms convection of the air flow, which effectively dissipates heat and prolongs the service life of the electronic components. When the boost pump needs to be installed, it is fixed through the reserved fixing holes. When water seepage occurs inside the shell, the overflowing fluid can be discharged to the outside of the shell through the drainage hole 404. The back plate of the shell is fixed with countersunk screws 303, making the overall rear door panel flat and beautiful. The touch screen mounting structure 102 is used for touch screen installation. When the double-layer shell structure needs to be fixed in position, it is fixed with pre-buried bolts through the fixing holes 401.

[0031] In the full-frequency conversion boosting system, one end of the inlet short-circuit 207 is reserved for connection with the on-site water inlet pipeline, and the other end is connected to the inlet main pipe 206. The inlet support 120 is fixed on the support chassis 405 and adjusted by its bolts. The clamp on the inlet support 120 fixes the inlet main pipe 206 for support; the thread on the inlet main pipe 206 is connected to one end of the water inlet ball valve, and the other end of the water inlet ball valve is fixed to the inlet flange short-circuit 119. After being fixed, the inlet flange short-circuit 119 is connected to the water pump 117 by flange connection, thereby forming a water inlet pipe. The three-way check valve 107 is fixed to the outlet flange short-circuit 112 through a flexible joint. The upper end is connected to the outlet pressure tank 1 202 or the outlet pressure tank 2 203, and the lower end is connected to the water outlet of the water pump 117. The pressure is detected by the outlet pressure sensor 111 on the three-way check valve 107. When the pressure feedback value is less than the target value, the frequency converter 105 drives the motor 109 to run, thereby driving the water pump 117 to extract the fluid inside the inlet main pipe 206 for pressure replenishment. Under the influence of the fluid pressure, the airbag inside the outlet pressure tank 1 202 and the outlet pressure tank 2 203 is squeezed. , maintain the pressure inside the pressure tank. When the system experiences pressure fluctuations, the pressure difference is replenished through the pressure inside the pressure tank to achieve system stability; the water pump 117 is fixed on the base 110, and the shock-absorbing pad is used to prevent the vibration caused by the operation of the pump group and the loosening of the bolts. The pump group fixing hole 402 is a reserved opening for the pump group; the other outlet flange short-circuit is bolted to the outlet flange short-circuit 112, and the other end of the other outlet flange short-circuit is connected to the ball valve 113. The inner thread on the ball valve 113 is fixed to the outer thread of the outlet main pipe 211, and one end of the outlet short-circuit 210 is connected to the user The outlet support 118 is fixed on the supporting chassis 403, and the other end is fixed to the outlet main pipe 211 by a clamp to realize the composition of the outlet pipeline unit; when the outlet ball valve 209 is opened, the outlet pressure gauge 208 displays the pressure on the outlet pipeline in real time, and the outlet ball valve 209 is closed when the pressure gauge 208 needs to be inspected; the touch screen 201 is the integration of the outlet pressure setting value and the system status, which is set by operating the buttons on the touch screen, and the data is interacted with the full frequency conversion system in real time through CAN communication.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] As attached Figure 1As shown, the touch screen 201 is embedded in the touch screen mounting structure 102, and the cabinet top 101 is welded and fixed to the other surfaces of the shell. The data and operating status on the touch screen 201 can be intuitively viewed through the outer door perspective tempered glass 103, and the outer door perspective tempered glass 103 is connected by a hinge 108. The inner door 106 is used to open and view the internal structure of the mechanical assembly; when it is necessary to hoist or push and pull, it can be fixed with its buckle 114. When the system needs to be tested, the push-pull handle 104 pulls out the tray 115 through the pulley 116 on the guide rail; the inlet support 120 is fixed to the supporting chassis and adjusted by its bolts. The clamp on the inlet support 120 fixes the inlet main pipe to support it; the thread on the inlet main pipe is connected to one end of the water inlet ball valve, and the other end of the water inlet ball valve is fixed to the inlet flange short circuit 119. After being fixed, the inlet flange short-circuit 119 is connected to the water pump 117 by means of a flange connection, thereby forming a water inlet pipeline unit; the three-way check valve 107 is fixed to the outlet flange short-circuit 112 by a flexible joint, the upper end is communicated with the outlet pressure tank, and the lower end is connected to the water outlet of the water pump 117. The pressure is detected by the outlet pressure sensor 111 on the three-way check valve 107. When the pressure feedback value is less than the target value, the frequency converter 105 drives the motor 109 to run, thereby driving the water pump 117 to extract the fluid inside the inlet main pipe for pressure replenishment. The water pump 117 is fixed on the base 110, and the shock-absorbing pad is used to prevent the vibration caused by the operation of the pump group and the loosening of the bolts; after the outlet flange short-circuit 112 is bolted together, it is the same as the ball valve 113. The inner thread on the ball valve 113 is fixed to the outer thread of the outlet main pipe. The outlet support 118 is fixed on the supporting chassis, and the other end is fixed to the outlet main pipe.

[0034] As attached Figure 2 As shown, the touch screen 201 interacts with the full-scale variable speed drive (FVDC) in real time via CAN communication. When the outlet pressure sensor detects that the outlet pressure is less than the set value, the frequency converter drives the pump group to increase the pressure. When the outlet pressure fluctuates but does not meet the pump start condition, the outlet pressure tank 1 202 and the outlet pressure tank 2 203 are required to supplement the pressure. One end of the inlet short circuit 207 is connected to the source water and the other end is connected to the inlet main pipe 206. One end of the outlet short circuit 210 is connected to the user main pipe and the other end is connected to the outlet main pipe 211. They are fastened to each other to form an inlet and outlet pipe unit. When the outlet ball valve 209 is opened, the outlet pressure gauge 208 displays the pressure on the outlet pipe in real time. When the pressure gauge 208 needs to be inspected, the outlet ball valve 209 is closed. The pump group power line and communication line are connected to the terminal at the upper end through the wire groove 204 to realize its power supply and lower control and data collection. When the mechanical components inside the lower end shell need to be inspected, the button lock 205 is pressed to enter the interior for inspection.

[0035] As attached Figure 3As shown, when the back plate of the shell is fixed, the countersunk screws 303 are inserted into the corresponding mounting holes; when the temperature inside the shell is high, the external air fluid enters the shell through the filter 304, and its axial flow fan 301 is installed on the heat dissipation cover 302. When the feedback value of the temperature inside the shell is greater than the set value, it is started, and the heat inside the shell is discharged to the outside of the shell through the up and down convection of the air fluid, thereby ensuring that the temperature inside the shell is always within the relevant normal range.

[0036] As attached Figure 4 As shown, the fixing hole 401 is used for pre-embedded expansion bolts for fixing after on-site positioning. When the booster pump unit is fixed on the pump unit fixing hole 402, the two are installed through a shock-absorbing pad. The support chassis 2 403 and the support chassis 1 405 are fixed to the inlet and outlet water supports. The height difference of the inlet and outlet water pipelines is confirmed by adjusting the support up and down. When the pipeline leaks, the fluid is discharged to the outside of the shell through the drain hole 404.

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

[0038] The present invention is not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A micro indoor full frequency conversion constant pressure water supply structure, characterized in that: The invention comprises a double-layer shell structure and a full-frequency conversion supercharging system. The double-layer shell structure comprises a shell. The shell comprises an outer door perspective tempered glass (103) and an inner door (106) to form a double-layer protective structure. The outer door perspective tempered glass (103) is connected to the shell by a hinge (108). The full-frequency conversion supercharging system comprises an inlet short circuit (207), an inlet main pipe (206), an outlet main pipe (211) and a water pump (117). One end of the inlet short circuit (207) is reserved for connection with an on-site water inlet pipeline. The other end of the inlet short circuit (207) is connected to the inlet main pipe (206). The inlet main pipe (206) is connected to one end of a water inlet ball valve. The other end of the water inlet ball valve is connected to an inlet flange short circuit (119). The inlet flange short-circuit (119) is connected to the water pump (117) by flange connection. The motor (109) of the water pump (117) is equipped with a frequency converter (105). The water outlet of the water pump (117) is connected to the lower end of the three-way check valve (107). The upper end of the three-way check valve (107) is connected to the outlet pressure tank 1 (202) and / or the outlet pressure tank 2 (203). The three-way check valve (107) is fixed to the outlet flange short-circuit (112) by a flexible joint. The other end of the outlet flange short-circuit (112) is connected to the outlet main pipe (211). The outlet main pipe (211) is connected to the outlet short-circuit (210). The other end of the outlet short-circuit (210) is connected to the user main pipe.

2. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: The top of the shell is provided with a cabinet top (101), the top of the side of the shell is provided with a buckle (114), the buckle (114) is used to hoist the shell, a guide rail is provided in the middle of the side of the shell, a tray (115) is slidably connected to the guide rail via a pulley (116), a push-pull handle (104) is provided on the tray (115), and the push-pull handle (104) pushes and pulls the tray (115) via the pulley (116) on the guide rail.

3. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: A temperature and humidity sensor is arranged in the shell, and the temperature and humidity in the cabinet are detected by the temperature and humidity sensor. The temperature and humidity sensor is electrically connected to an axial flow fan (301). The axial flow fan (301) is fixed on a heat dissipation cover (302). The heat dissipation cover (302) is installed on the upper back of the shell. A filter screen (304) is installed on the lower back of the shell. The filter screen (304) and the heat dissipation cover (302) form air convection.

4. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: An outlet pressure sensor (111) is installed between the three-way check valve (107) and the outlet flange short circuit (112). The outlet pressure sensor (111) is used for pressure detection. The outlet pressure sensor (111) is electrically connected to the frequency converter (105). After the frequency converter (105) drives the motor (109) to run, it drives the water pump (117) to extract the fluid inside the inlet main pipe (206) to replenish the pressure.

5. The micro indoor full frequency conversion constant pressure water supply structure according to claim 4, characterized in that: The outlet flange short circuit (112) is bolted to another outlet flange short circuit, the other end of the other outlet flange short circuit is connected to the ball valve (113), and the inner thread on the ball valve (113) is fixed to the outer thread of the outlet main pipe (211).

6. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: An outlet pressure gauge (208) and an outlet ball valve (209) are installed on the outlet main pipe (211). One end of the outlet ball valve (209) is connected to the outlet main pipe (211), and the other end of the outlet ball valve (209) is connected to the outlet pressure gauge (208). The outlet pressure gauge (208) displays the pressure on the outlet main pipe (211) in real time when the outlet ball valve (209) is opened, and can be inspected when the outlet ball valve (209) is closed.

7. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: The bottom of the shell is provided with a support chassis 1 (405) and a support chassis 2 (403); an inlet support (120) and an outlet support (118) are fixed on the support chassis 1 (405) and the support chassis 2 (403), respectively; the height of the inlet support (120) and the outlet support (118) are both adjusted by bolts; the clamps on the inlet support (120) and the outlet support (118) clamp and fix the inlet main pipe (206) and the outlet main pipe (211), respectively, and support the inlet main pipe (206) and the outlet main pipe (211).

8. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: A fixing hole (401) is provided at the edge of the bottom surface of the shell, and the shell is fixed by the fixing hole (401) and the embedded bolts. A drainage hole (404) and a pump assembly fixing hole (402) are distributed on the bottom surface of the shell. The drainage hole (404) is used to discharge overflowing fluid to the outside of the shell when water seepage occurs inside the shell. The water pump (117) is fixed to the pump assembly fixing hole (402) through the base (110). A shock-absorbing pad is installed between the water pump (117) and the base (110), and the shock-absorbing pad is used to prevent the bolts from loosening due to vibration during the operation of the pump assembly.

9. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: A cabinet door is installed at the lower front end of the shell, and a button lock (205) is installed on the cabinet door. The button lock (205) is electrically connected to the full-frequency conversion supercharging system; a touch screen installation structure (102) is arranged at the upper front end of the shell, and a touch screen (201) is embedded in the touch screen installation structure (102). The touch screen (201) is connected to the full-frequency conversion supercharging system through a line, and performs real-time data interaction with the full-frequency conversion supercharging system through CAN communication.

10. The micro indoor full frequency conversion constant pressure water supply structure according to claim 1, characterized in that: A wire groove (204) is preset on the inner wall of the shell, and the power line and control line of the full-frequency conversion boosting system are connected to the upper end terminal through the wire groove (204), and the power line and control line are placed in the wire groove (204).

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