Three-cavity double-compensation non-negative pressure water supply equipment

Abstract

The utility model discloses three-cavity double-compensation non-negative-pressure water supply equipment which comprises a manual control valve, a Y-shaped filter, a backflow preventer, a flow stabilizing cavity, a first-stage compensation cavity, a second-stage compensation cavity, a second-stage compensation cavity energy storage pump and a plurality of pressurizing water pumps connected in parallel. The municipal water flows out of the flow stabilizing cavity, then is pressurized by the pressurizing water pump and flows out of the water outlet confluence header pipe, one path flows into a user pipe network, and the other path flows into the primary compensation cavity and the secondary compensation cavity; the water outlet end of the first-stage compensation cavity and the water outlet end of the second-stage compensation cavity are both connected with the flow stabilizing cavity, and the first-stage compensation cavity preferentially supplies water to the flow stabilizing cavity. The equipment has a compensation water supply function, and water is stored in the two-stage compensation cavity during normal operation. When the municipal water is insufficient or the pressure is unstable in the peak period of water consumption, the stored standby water can be used for carrying out differential compensation on the water supply pipe network, normal operation of equipment is maintained, and the influence of frequent start and stop of the water pump on the service life is reduced while water supply is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply equipment, and more specifically to a three-chamber double-compensation non-negative pressure water supply equipment. Background Art

[0002] Non-negative pressure water supply equipment is a pressurized water supply unit that is directly connected to the municipal water supply network. It is a secondary pressurized water supply equipment that connects in series and superimposes water on the residual pressure of the municipal network to ensure that the pressure of the municipal network is not less than the set protection pressure. When the existing non-negative pressure water supply equipment is in use, due to insufficient high-rise water supply pressure, a pressure-boosting water pump is used for secondary pressurization, so that the water pressure can be smoothly supplied to high-rise users when under-pressure occurs, thereby ensuring stable high-rise water supply. However, when the user network frequently uses small amounts of water, the pressure-boosting water pump will start and stop frequently to ensure stable water pressure. Each start and stop of the pressure-boosting water pump will cause an impact on the pipeline, destroying the stability of the water supply, and also affecting the service life of the water pump.

[0003] In addition, due to the limitations of its working principle, the existing non-negative pressure water supply equipment can only avoid the negative pressure impact on the municipal tap water network by reducing the water supply or directly shutting down when the water pressure is insufficient during the peak period of municipal water use. This will not only affect the normal water use of residents, but also aggravate the impact on the service life of the water pump due to frequent starting and stopping of the water pump during the peak water use period. Utility Model Content

[0004] The purpose of the utility model is to provide a three-chamber double-compensation non-negative pressure water supply device to solve the technical problems existing in the above-mentioned background technology.

[0005] The technical solution of the utility model provides a three-chamber double-compensation non-negative pressure water supply equipment, including a manual control valve, a Y-type filter, a backflow preventer, a steady flow chamber, a primary compensation chamber, a secondary compensation chamber, a secondary compensation chamber energy storage pump and a plurality of parallel pressurized water pumps;

[0006] After the municipal tap flows out of the stabilizing chamber, it is pressurized by the pressure water pump and flows out from the water outlet manifold, one way flows into the user pipe network, and the other way flows into the primary compensation chamber and the secondary compensation chamber; before flowing into the secondary compensation chamber, it is pressurized again by the secondary compensation chamber energy storage pump; the water outlet ends of the primary compensation chamber and the secondary compensation chamber are both connected to the stabilizing chamber, and the primary compensation chamber preferentially supplies water to the stabilizing chamber.

[0007] In a preferred embodiment, the primary compensation chamber and the secondary compensation chamber each include a chamber body, a rubber diaphragm, a flow guide tube, a fixed support, a one-way inflation valve and a direct-reading pressure gauge.

[0008] In a preferred embodiment, an exhaust valve is provided on the steady flow chamber.

[0009] In a preferred embodiment, it also includes a pressure water pump front control valve, a pressure water pump front soft connection, a pressure water pump outlet check valve, a pressure water pump rear soft connection, and a pressure water pump rear control valve.

[0010] In a preferred embodiment, it also includes an electric valve, a first-stage compensation chamber pressure sensor, and a first-stage compensation chamber outlet electromagnetic pressure reducing valve.

[0011] In a preferred embodiment, it also includes a pre-pump control valve of the accumulator pump, an outlet check valve of the accumulator pump, and a post-pump control valve of the accumulator pump.

[0012] In a preferred embodiment, it also includes a secondary compensation chamber pressure sensor and a secondary compensation chamber outlet electromagnetic pressure reducing valve.

[0013] In a preferred embodiment, it also includes a main water inlet pipe pressure sensor, a water outlet pressure switch, a water outlet pressure sensor, and a water outlet direct-reading pressure gauge.

[0014] In a preferred embodiment, it also includes an intelligent control cabinet, a water outlet manifold support frame, a three-cavity support plate, a pressurized water pump water outlet flange elbow, and an equipment skid-mounted base.

[0015] The beneficial effects of the technical solution of the utility model are:

[0016] 1. The equipment has a small flow rate pressure maintenance function. When the main pump is dormant, the first-level compensation chamber is used to supplement the pressure required by the equipment. When a small amount of water is used, the number of times the booster pump is started is reduced, thereby extending the life of the pump.

[0017] 2. The equipment has a compensatory water supply function. During normal operation, water is stored in the two-stage compensation chamber. At the same time, the structure of the first-stage compensation chamber and the second-stage compensation chamber can realize the function of the diaphragm air pressure tank to maintain the stability of the equipment's water supply pressure. When the municipal water volume is insufficient or the pressure is unstable during the peak water use period, the stored spare water can be used to compensate for the difference in the water supply network to maintain the normal operation of the equipment, ensure water supply, and reduce the impact of frequent start-stop of the water pump on its life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the primary compensation cavity and the secondary compensation cavity of the utility model.

[0020] Figure 3 This is a cross-sectional view of the primary compensation cavity and the secondary compensation cavity of the utility model.

[0021] Figure 4 This is a working principle diagram of the utility model.

[0022] Description of reference numerals: 1 manual control valve, 2 Y-type filter, 3 backflow preventer, 401 secondary compensation chamber, 402 primary compensation chamber, 403 steady flow chamber, exhaust valve 404, 405 accumulator pump front control valve, 406 secondary compensation chamber accumulator pump, 407 accumulator pump outlet check valve, 408 accumulator pump rear control valve, 409 secondary compensation chamber pressure sensor, 410 primary compensation chamber pressure sensor, 411 secondary compensation chamber outlet electromagnetic pressure reducing valve, 412 primary compensation chamber outlet electromagnetic pressure reducing valve, 413 total water inlet pressure sensor, 414 electric valve, 415 booster pump front control valve, 416 booster pump front soft Connection, 417 booster water pump, 418 booster water pump outlet check valve, 419 booster water pump rear soft connection, 420 booster water pump rear control valve, 421 outlet pressure switch, 422 outlet pressure sensor, 423 outlet direct reading pressure gauge, 424 outlet confluence main pipe, 425 intelligent control cabinet, 426 outlet confluence main pipe support frame, 427 three-chamber support plate, 428 booster water pump outlet flange elbow, 429 equipment skid-mounted base, 501 cavity, 502 rubber diaphragm, 503 guide pipe, 504 fixed support, 505 one-way inflation valve, 506 direct reading pressure gauge, 6 equipment water inlet, 7 equipment water outlet. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the sake of illustration and convenience of description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0024] like Figure 1-4 As shown, the technical solution of the utility model provides a three-chamber double-compensation non-negative pressure water supply device, including a manual control valve 1, a Y-type filter 2, a backflow preventer 3, a steady flow chamber 403, a primary compensation chamber 402, a secondary compensation chamber 401, a secondary compensation chamber energy storage pump 406 and a plurality of parallel pressurized water pumps 417;

[0025] After the municipal tap water flows out of the stabilizing chamber 403, it is pressurized by the pressure water pump 417 and flows out from the outlet confluence main pipe 424, one way flows into the user pipe network, and the other way flows into the primary compensation chamber 402 and the secondary compensation chamber 401; before flowing into the secondary compensation chamber 401, it is pressurized again by the secondary compensation chamber energy storage pump 406; the water outlet ends of the primary compensation chamber 402 and the secondary compensation chamber 401 are both connected to the stabilizing chamber 403, and the primary compensation chamber 402 preferentially supplies water to the stabilizing chamber 403.

[0026] The primary compensation chamber 402 and the secondary compensation chamber 401 both include a chamber 501, a rubber diaphragm 502, a guide tube 503, a fixed support 504, a one-way inflation valve 505 and a direct-reading pressure gauge 506. This equipment has a compensating water supply function. During normal operation, the primary compensation chamber 402 and the secondary compensation chamber 401 store water. The structure of the primary compensation chamber 402 and the secondary compensation chamber 401 can realize the function of a diaphragm air pressure tank to maintain the stability of the water supply pressure of the equipment. When the municipal water volume is insufficient or the pressure is unstable during the peak water use period, the water supply network can be differentially compensated by the stored spare water to maintain the normal operation of the equipment, ensure water supply, and reduce the impact of frequent start-stop of the water pump on its life.

[0027] The stabilizing chamber 403 is provided with an exhaust valve 404 for exhausting the original gas in the stabilizing chamber until the chamber is filled with water and then automatically closed.

[0028] The device also includes a pressure water pump front control valve 415, a pressure water pump front soft connection 416, a pressure water pump outlet check valve 418, a pressure water pump rear soft connection 419, and a pressure water pump rear control valve 420.

[0029] It also includes an electric valve 414, a primary compensation chamber pressure sensor 410, and a primary compensation chamber outlet electromagnetic pressure reducing valve 412. It also includes an accumulator pump front control valve 405, an accumulator pump outlet check valve 407, and an accumulator pump rear control valve 408.

[0030] It also includes a secondary compensation chamber pressure sensor 409 and a secondary compensation chamber outlet electromagnetic pressure reducing valve 411. It also includes a main water inlet pipe pressure sensor 413, a water outlet pressure switch 421, a water outlet pressure sensor 422, a water outlet direct reading pressure gauge 423,

[0031] It also includes an intelligent control cabinet 425, a water outlet confluence main pipe support frame 426, a three-cavity support plate 427, a pressurized water pump outlet flange elbow 428, and an equipment skid-mounted base 429.

[0032] Municipal tap water enters the equipment steady flow chamber 403 through the manual control valve 1, Y-type filter 2, and backflow preventer 3. The original gas in the steady flow chamber 403 is discharged from the chamber through the exhaust valve 404 until the chamber is filled with water and automatically closed. The intelligent control cabinet 425 controls the frequency conversion operation of the booster pump 417 according to the pressure value fed back in real time by the water outlet pressure sensor 422. The water enters the booster pump 417 through the booster pump front soft connection 416. After pressurization, it enters the user's pipe network through the booster pump outlet check valve 418, the booster pump rear soft connection 419, the booster pump rear control valve 420, the outlet confluence main pipe 424, and the equipment outlet manual control valve 5. The positions of the equipment water inlet 6 and the equipment water outlet 7 are as follows: Figure 1 shown.

[0033] At the same time, the intelligent control cabinet 425 controls the electric valve 414 to open, the electromagnetic pressure reducing valve 412 at the outlet of the primary compensation chamber and the electromagnetic pressure reducing valve 411 at the outlet of the secondary compensation chamber to close, and the energy storage pump 406 at the secondary compensation chamber to start. The pressurized water is divided into two paths after passing through the control valve 420 after the pressure pump and the soft connection 419 after the pressure pump. One path enters the primary compensation chamber 402 for standby through the electric valve 414, and the other path enters the secondary compensation chamber 401 for standby after being pressurized again by the energy storage pump 406 at the secondary compensation chamber. When the intelligent control cabinet 425 receives feedback from the secondary compensation chamber pressure sensor 409 that the pressure in the secondary compensation chamber 401 reaches the set value, it controls the energy storage pump 406 at the secondary compensation chamber to stop running. At this time, the equipment is in normal operation.

[0034] When the equipment is in normal operation, if no one in the user's pipe network uses water, the intelligent control cabinet 425 controls the booster pump 417 to stop running to save energy. If the user's pipe network uses a small amount of water, the spare high-pressure water stored in the first-level compensation chamber 402 can enter the user's pipe network through the open electric valve 414 and the water outlet confluence main pipe 424 to meet the water demand. When the stored spare water is used up, the first-level compensation chamber pressure sensor 410 senses the pressure drop and transmits the signal to the intelligent control cabinet 425. The intelligent control cabinet 425 then controls the booster pump 417 to operate with variable frequency, supplying water to the user's pipe network while replenishing the spare water in the first-level compensation chamber 402. This process can avoid frequent startup of the booster pump 417 when the user's pipe network uses a small amount of water, reducing the impact on the life of the water pump.

[0035] When the water pressure is insufficient during the peak period of municipal water use, the total water inlet pressure sensor 413 senses the pressure drop and transmits the signal to the intelligent control cabinet 425. The intelligent control cabinet 425 controls the electric valve 414 to close and the first-level compensation chamber outlet electromagnetic pressure reducing valve 412 to open. The spare high-pressure water stored in the first-level compensation chamber 402 is replenished to the steady flow chamber 403 through the outlet electromagnetic pressure reducing valve 412 of the first-level compensation chamber to maintain the stability of the water inlet pressure while supplementing the shortage of municipal water, so as to avoid stopping the water supply due to negative pressure on the municipal tap water network. When the spare high-pressure water stored in the primary compensation chamber 402 is used up, the primary compensation chamber pressure sensor 410 senses the pressure drop and transmits the signal to the intelligent control cabinet 425. The intelligent control cabinet 425 controls the electromagnetic pressure reducing valve 412 at the outlet of the primary compensation chamber to close and the electromagnetic pressure reducing valve 411 at the outlet of the secondary compensation chamber to open. The spare high-pressure water stored in the secondary compensation chamber 401 is replenished to the steady flow chamber 403 through the electromagnetic pressure reducing valve 411 at the outlet of the secondary compensation chamber to continue to maintain the water inlet pressure stable, and at the same time to supplement the shortage of municipal water, until the spare high-pressure water stored in the secondary compensation chamber 401 is used up, that is, the secondary compensation chamber pressure sensor 409 senses the pressure drop and transmits the signal to the intelligent control cabinet 425. The intelligent control cabinet 425 controls the booster pump 417 to stop running to avoid negative pressure on the municipal tap water network. When the municipal pressure returns to normal and the total water inlet pressure sensor 413 senses the pressure as the set normal value, the equipment resumes operation and returns to normal operation. This process can greatly delay the impact of pressure fluctuations during peak municipal water use on equipment operation, avoid frequent starting and stopping of water pumps, and reduce the impact on water pump life.

[0036] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A three-chamber double-compensation non-negative pressure water supply equipment, characterized in that: It includes a manual control valve, a Y-type filter, a backflow preventer, a steady flow chamber, a primary compensation chamber, a secondary compensation chamber, a secondary compensation chamber accumulator pump and several parallel-connected pressurized water pumps; After the municipal tap flows out of the steady flow chamber, it is pressurized by the pressure water pump and flows out from the water outlet confluence main pipe, one way flows into the user pipe network, and the other way flows into the primary compensation chamber and the secondary compensation chamber; Before flowing into the secondary compensation chamber, the water is pressurized again by the secondary compensation chamber accumulator pump; the water outlets of the primary compensation chamber and the secondary compensation chamber are both connected to the steady flow chamber, and the primary compensation chamber preferentially supplies water to the steady flow chamber; The primary compensation chamber and the secondary compensation chamber both include a chamber body, a rubber diaphragm, a flow guide tube, a fixed support, a one-way inflation valve and a direct-reading pressure gauge.

2. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1 is characterized in that: An exhaust valve is arranged on the steady flow chamber.

3. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1 is characterized in that: It also includes a pressure water pump front control valve, a pressure water pump front soft connection, a pressure water pump outlet check valve, a pressure water pump rear soft connection, and a pressure water pump rear control valve.

4. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1, characterized in that: It also includes an electric valve, a first-stage compensation chamber pressure sensor, and a first-stage compensation chamber outlet electromagnetic pressure reducing valve.

5. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1 is characterized in that: It also includes a front control valve of the accumulator pump, a check valve at the outlet of the accumulator pump, and a rear control valve of the accumulator pump.

6. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1, characterized in that: It also includes a secondary compensation chamber pressure sensor and a secondary compensation chamber outlet electromagnetic pressure reducing valve.

7. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1, characterized in that: It also includes a main water inlet pipe pressure sensor, a water outlet pressure switch, a water outlet pressure sensor, and a water outlet direct-reading pressure gauge.

8. The three-chamber double-compensation non-negative pressure water supply equipment according to claim 1 is characterized in that: It also includes an intelligent control cabinet, a water outlet manifold support frame, a three-cavity support plate, a pressurized water pump outlet flange elbow, and an equipment skid-mounted base.

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