Water pump pressure tank with high safety

Abstract

The utility model relates to the technical field of pressure tanks, and discloses a water pump pressure tank with high safety, which comprises a tank body, an air bag is arranged in the tank body, a bottom flange of the tank body is hermetically connected with a water inlet head, the water inlet head is communicated with the air bag, and a bottom water inlet end of the air bag is compressed at the bottom of the tank body through a flange structure of the water inlet head; an air leakage pipe is arranged at the upper part of the tank body and is provided with a safety valve; a mounting base is fixedly connected to the side wall of the tank body, a flange on the mounting base is in sealed connection with a photoelectric sensor, the photoelectric sensor is electrically connected with a single-chip microcomputer controller, one side of the water inlet head is fixedly connected with a pressure relief pipe, and an electromagnetic valve is arranged on the hydraulic pipe and is electrically connected with the single-chip microcomputer controller. When the air bag is not controlled to expand, the pressure of the air bag is relieved by adopting independent control equipment, and excessive expansion is avoided, so that the air bag is protected, and the whole equipment is safer to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure tanks, in particular to a water pump pressure tank with high safety. Background Art

[0002] The water pump pressure tank is used in a closed water circulation system to balance the water volume and pressure, avoiding frequent opening of the safety valve and frequent water replenishment by the automatic water replenishment valve. In addition to accommodating the expansion water, the expansion tank can also serve as a water replenishment tank. The expansion tank is filled with air to obtain a larger volume to accommodate the expansion water. The high and low pressure expansion tanks can use their own pressure to replenish water to the pressure stabilization system in parallel. The control of each point of this device is interlocking reaction, automatic operation, small pressure fluctuation range, safe and reliable, energy-saving, and good economic effect.

[0003] In order to ensure the safety of use, the existing pressure tanks are equipped with air pressure relief valves on the tank body for pressure relief protection. For example, the high-safety pressure tank announced by announcement number CN212772621U protects the pressure tank by means of a pressure relief valve. However, during the use of this device, the applicant found that when the water pump control fails or the pressure in the pipeline increases uncontrollably due to external factors, the airbag will expand uncontrollably. The lack of a protective device will cause the airbag to collapse due to expansion and be unable to retract or directly expand and explode, which is very unsafe. In order to cope with unexpected situations, a high-safety water pump pressure tank is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a water pump pressure tank with high safety in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the utility model is as follows: a water pump pressure tank with high safety, comprising a tank body, an air bag is arranged inside the tank body, a water inlet head is sealedly connected to the bottom flange of the tank body, the water inlet head is communicated with the air bag, and the bottom water inlet end of the air bag is pressed against the bottom of the tank body through the flange structure of the water inlet head;

[0006] The upper part of the tank body is provided with an air release pipe, and the air release pipe is provided with a safety valve;

[0007] A mounting seat is fixedly connected to the side wall of the tank body, a photoelectric sensor is sealably connected to the mounting seat flange, the photoelectric sensor is electrically connected to a single-chip microcomputer controller, a pressure relief pipe is fixedly connected to one side of the water inlet head, a solenoid valve is arranged on the pressure relief pipe, and the solenoid valve is electrically connected to the single-chip microcomputer controller.

[0008] In a preferred embodiment, a pressure gauge and a pressure switch are connected to the tank body, and the pressure switch is externally connected to a PLC terminal connected to a water pump.

[0009] In a preferred embodiment, an inflation nozzle is connected to the upper portion of the tank body.

[0010] In a preferred embodiment, an externally threaded connecting pipe is provided at the bottom of the water inlet head.

[0011] In a preferred embodiment, a guard frame is fixedly connected to the inner wall of the tank body, the photoelectric sensor is arranged in the guard frame, and a through hole is opened in the guard frame.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. In the utility model, when the water pump control fails or the pipeline is affected by external factors and the pressure increases uncontrollably, the airbag may exceed the preset expansion volume. At this time, the safety valve will release the air pressure inside the tank body 1. At this time, since the airbag continues to expand, when the side wall of the airbag expands and approaches the photoelectric sensor, the photoelectric sensor detects that the expansion volume of the airbag reaches the set safety value. At this time, the single-chip microcomputer controller will send a signal to open the solenoid valve. At this time, the pressure relief pipe will relieve the pressure on the airbag to avoid the expansion and explosion of the airbag, protect the airbag, and make the entire water pump pressure tank safer to use. The entire control pressure relief system is controlled by a separate single-chip microcomputer controller, which is more practical and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of the guard frame.

[0017] Markings in the figure: 1-tank body, 2-air bag, 3-water inlet head, 4-air release pipe, 5-safety valve, 6-mounting seat, 7-photoelectric sensor, 8-single chip controller, 9-pressure relief pipe, 10-solenoid valve, 11-pressure gauge, 12-pressure switch, 13-inflating nozzle, 14-external threaded connecting pipe, 15-guard, 16-through hole. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The following will be combined Figure 1-Figure 3 A water pump pressure tank with high safety in an embodiment of the utility model is described in detail.

[0020] Example:

[0021] The utility model embodiment provides a water pump pressure tank with high safety, referring to Figure 1 and Figure 2 As shown, it includes a tank body 1, which is filled with air. A pressure switch 12 is connected to the tank body 1, and the pressure switch 12 is externally connected to the PLC end connected to the water pump. An air bag 2 is arranged inside the tank body 1. The bottom flange of the tank body 1 is sealed and connected with a water inlet head 3, and the water inlet head 3 is communicated with the air bag 2. The bottom water inlet end of the air bag 2 is pressed against the bottom of the tank body 1 through the flange structure of the water inlet head 3. When the water pump of this structure is started, the pressurized water will expand the air bag 2, thereby storing water. When the air bag 2 expands and compresses the air in the tank body 1, the air pressure inside the tank body 1 increases. At this time, when the pressure switch 12 detects that the air pressure in the tank body 1 reaches the set value, the pressure switch 12 will transmit information to the PLC end, and the PLC end will control the water pump to close. Then, when water is used, the pressurized air in the tank body 1 will squeeze the air bag 2, so that the pressure in the air bag 2 flows out for use, thereby reducing the start and stop of the water pump and protecting the water pump. At the same time, the contractility of the air bag 2 can also stabilize the water pressure balance in the pipeline and protect the pipeline and the water pump.

[0022] It should be noted that the pressure switch 12 and the PLC terminal are both existing control devices, the principles of which are public, and the specific control structures and procedures are all existing technologies, which will not be introduced in detail here.

[0023] refer to Figure 1 As shown, a vent pipe 4 is provided on the upper part of the tank body 1, and a safety valve 5 is provided on the vent pipe 4. When the pressure in the tank body 1 exceeds the safety value, the safety valve 5 will release the pressure of the tank body 1, thereby preventing the tank body 1 from rupturing due to excessive pressure and causing an explosion.

[0024] refer to Figure 2As shown, a mounting seat 6 is fixedly connected to the side wall of the tank body 1, and a photoelectric sensor 7 is flange-sealed on the mounting seat 6. The photoelectric sensor 7 is electrically connected to a single-chip controller 8. A pressure relief pipe 9 is fixedly connected to one side of the water inlet head 3. A solenoid valve 10 is arranged on the pressure relief pipe 9, and the solenoid valve 10 is electrically connected to the single-chip controller 8. In this structure, when the water pump control fails or the pressure in the pipeline suddenly increases, the airbag 2 may exceed the preset expansion volume. At this time, the air outside the tank body 1 will be depressurized, but because the pressure inside the pipeline is still increasing, the airbag 2 will continue to expand. At this time, when the side wall of the airbag 2 expands and approaches the photoelectric sensor 7, the photoelectric sensor 7 detects that the expansion volume of the airbag 2 reaches the set safety value. At this time, the single-chip controller 8 will send a signal to open the solenoid valve 10. At this time, the pressure relief pipe 9 will perform pressure relief protection on the airbag 2 to prevent the airbag 2 from expanding and exploding, protect the airbag 2, and make the entire water pump pressure tank safer to use. In addition, the entire control pressure relief system is controlled by a separate single-chip controller 8, which is more practical and safer.

[0025] It should be noted that: the photoelectric sensor 7, the single-chip control 8 and the solenoid valve 10 are all prior art, and the principles are public. The model of the photoelectric sensor 7 is a cylindrical photoelectric sensor, the specific model is BRQP5M-TDTA, and the model of the single-chip control is: STC89C51RC. The above-mentioned specific control devices and programs are also prior art, and this application does not improve the control devices and programs, so no further elaboration is given here.

[0026] refer to Figure 1 As shown, a pressure gauge 11 is connected to the tank body 1. This structure uses the pressure gauge 11 to facilitate personnel to observe the internal pressure of the tank body 1, and facilitate timely gas replenishment and refilling.

[0027] refer to Figure 1 As shown, an air filling nozzle 13 is connected to the upper portion of the tank body 1 . This structure utilizes the air filling nozzle 13 to facilitate the inflation of the interior of the tank body 1 .

[0028] refer to Figure 1 As shown, an externally threaded connecting pipe 14 is provided at the bottom of the water inlet head 3. This structure utilizes the externally threaded connecting pipe 14 to facilitate the connection of the water inlet head 2 with the pipe network.

[0029] refer to Figure 2 and Figure 3 As shown, a guard frame 15 is fixedly connected to the inner wall of the tank body 1, and the photoelectric sensor 7 is arranged in the guard frame 15. A through hole 16 is opened on the guard frame 15. This structure uses the guard frame 15 to prevent the airbag 2 from expanding and squeezing and damaging the photoelectric sensor 7, and the through hole 16 facilitates the tube bundle to penetrate the guard frame 15.

[0030] It should be noted that the pressure tank assembled in the above-mentioned embodiment is applied to the water supply network with a water pump.

[0031] The implementation principle of a high-safety water pump pressure tank in an embodiment of the present application is as follows: during use, when the water pump control fails or the pipeline is affected by external factors and the pressure increases uncontrollably, the airbag 2 may exceed the preset expansion volume. At this time, the airbag 2 will squeeze the air outside the tank body 1 to reach the limit pressure, and the safety valve 5 will relieve the pressure of the tank body 1, thereby preventing the tank body 1 from rupturing and causing an explosion due to excessive pressure. At this time, since the internal pressure of the pipeline is still increasing, the airbag 2 will continue to expand. At this time, when the side wall of the airbag 2 expands and approaches the photoelectric sensor 7, the photoelectric sensor 7 detects that the expansion volume of the airbag 2 reaches the set safety value. At this time, the single-chip controller 8 will send a signal to open the solenoid valve 10. At this time, the pressure relief pipe 9 will relieve the pressure on the airbag 2 to prevent the airbag 2 from expanding and exploding, protect the airbag 2, and make the entire water pump pressure tank safer to use. The entire control pressure relief system is controlled by a separate single-chip controller 8, which is more practical and safer.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water pump pressure tank with high safety, comprising a tank body (1), characterized in that: An air bag (2) is arranged inside the tank body (1); a water inlet head (3) is sealedly connected to the bottom flange of the tank body (1); the water inlet head (3) is communicated with the air bag (2); and the bottom water inlet end of the air bag (2) is pressed against the bottom of the tank body (1) through the flange structure of the water inlet head (3); The upper part of the tank body (1) is provided with a gas relief pipe (4), and the gas relief pipe (4) is provided with a safety valve (5); A mounting seat (6) is fixedly connected to the side wall of the tank body (1), a photoelectric sensor (7) is sealingly connected to the mounting seat (6) via a flange, the photoelectric sensor (7) is electrically connected to a single-chip controller (8), a pressure relief pipe (9) is fixedly connected to one side of the water inlet head (3), a solenoid valve (10) is provided on the pressure relief pipe (9), and the solenoid valve (10) is electrically connected to the single-chip controller (8).

2. A water pump pressure tank with high safety as claimed in claim 1, characterized in that: The tank body (1) is connected to a pressure gauge (11) and a pressure switch (12), and the pressure switch (12) is externally connected to a PLC terminal connected to a water pump.

3. A water pump pressure tank with high safety as claimed in claim 1, characterized in that: The upper part of the tank body (1) is connected with an inflation nozzle (13).

4. A water pump pressure tank with high safety as claimed in claim 1, characterized in that: An external threaded connecting pipe (14) is provided at the bottom of the water inlet head (3).

5. A water pump pressure tank with high safety as claimed in claim 1, characterized in that: A guard frame (15) is fixedly connected to the inner wall of the tank body (1), the photoelectric sensor (7) is arranged in the guard frame (15), and a through hole (16) is opened on the guard frame (15).

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