CN218814014U

CN218814014U - Overpressure protection device and water supply equipment

Info

Publication number: CN218814014U
Application number: CN202223122451.1U
Authority: CN
Inventors: 郭熊熊; 薛龙
Original assignee: Suzhou Shuilishi Electrical And Mechanical Equipment Installation Co ltd
Current assignee: Suzhou Shuilishi Electrical And Mechanical Equipment Installation Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-04-07
Anticipated expiration: 2032-11-24

Abstract

The utility model provides an overpressure protection device and water supply equipment, the overpressure protection device comprises a pressurizing pipeline and at least one user water supply pipeline connected with the pressurizing pipeline, and the pressurizing pipeline is connected with a tap water pipe network; the user water supply pipeline is provided with a pressure reducing valve, an electromagnetic valve, a pressure sensor, a safety valve, a water using end and a controller; the pressure reducing valve, the electromagnetic valve, the pressure sensor and the safety valve are connected in series between the pressurizing pipeline and the water using end; the pressure sensor and the electromagnetic valve are connected with the controller; the utility model discloses in, carry out feedback control and relief valve release pressure dual mode to the solenoid valve state through pressure sensor and prevent the emergence of explosion accident, have higher reliability with prior art comparatively speaking.

Description

Overpressure protection device and water supply equipment

Technical Field

The utility model belongs to the technical field of the secondary water supply, concretely relates to superpressure protection device and water supply equipment.

Background

The prior secondary water supply system usually needs to add a water supply network protection device to protect the pipeline in the low-pressure area from pipe explosion caused by excessive water pressure.

Originally, relief valves were added to the water supply lines to achieve the protective function, but this approach wastes water and risks flooding the pump house.

Then, as the chinese utility model patent document with the publication number CN207484568U, a water supply overpressure protection system is disclosed, wherein an overpressure signal is generated when a pressure detector detects that the water pressure is too high, the pressure detector transmits the overpressure signal to a control unit, the control unit controls an electric valve to close after receiving the overpressure signal, the electric valve stops supplying water to a low-pressure water supply pipeline after closing, the low-pressure water supply pipeline is protected from pipe explosion caused by too high water pressure, and the water supply is safe and reliable; however, there are obvious disadvantages, such as that in case of failure of the pressure detector, the control unit or the electric valve, the internal pressure of the first water supply pipeline cannot be released, resulting in a pipe burst accident.

Therefore, an overpressure protection device and a water supply device capable of improving reliability and avoiding pipe explosion accidents need to be designed to solve the technical problems faced at present.

Disclosure of Invention

To exist not enough among the prior art, the utility model provides a can promote the reliability, avoid appearing the superpressure protection device and the water supply equipment of tube explosion accident.

The technical scheme of the utility model is that: the overpressure protection device comprises a pressurizing pipeline and at least one user water supply pipeline connected with the pressurizing pipeline, and the pressurizing pipeline is connected with a tap water pipe network; the user water supply pipeline is provided with a pressure reducing valve, an electromagnetic valve, a pressure sensor, a safety valve, a water using end and a controller; the pressure reducing valve, the electromagnetic valve, the pressure sensor and the safety valve are connected in series between the pressurizing pipeline and the water using end; and the pressure sensor and the electromagnetic valve are connected with the controller.

The water discharging end of the safety valve is connected with an overflow tank through an overflow pipeline, and the overflow pipeline extends to the inner bottom of the overflow tank.

The top of the overflow pipe is connected with a drainage pipe network through a pipeline.

The pressurization pipeline is provided with a first stop valve, a pressure stabilizing pump, a check pump and a second stop valve which are connected in series.

And a main valve and a pressure stabilizing tank are connected in series between the pressurizing pipeline and the tap water pipe network.

And a filter is connected in series between the main valve and the surge tank.

And a backflow preventer is connected in series between the filter and the pressure stabilizing tank.

And the pressurizing pipeline is connected with three user water supply pipelines.

The controller is a PLC controller.

Water supply equipment with an overpressure protection device as described in any one of the above.

The utility model has the advantages that:

(1) In the utility model, the electromagnetic valve state is fed back and regulated by the pressure sensor and the pressure is released by the safety valve to prevent the pipe burst accident, which has higher reliability compared with the prior art;

(2) The pressure sensor is used for checking the pressure of the pipeline behind the electromagnetic valve, and when the measured pressure value exceeds a pressure threshold value set in the controller, the controller outputs a signal to close the electromagnetic valve to stop the pipeline, so that the pipe explosion accident is avoided;

(3) When the pressure sensor, the controller or the electromagnetic valve fails and cannot cut off the pipeline in time, the pressure of the user water supply pipeline continues to rise, the safety valve is switched on to discharge water into the drainage pipe network, the pressure of the user water supply pipeline is released, and pipe explosion accidents are avoided;

(4) Corresponding user water supply pipelines are selected according to the water use pressure requirements of users with different heights, and the corresponding water use ends are enabled to have the water use pressure required by the users by adjusting the pressure reducing valves, so that the pressure adjustment is convenient.

Drawings

Fig. 1 is a schematic structural diagram of the overvoltage protection device of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the invention, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and the like in the present application does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1, the overpressure protection device comprises a pressurizing pipeline 6 and at least one user water supply pipeline 7 connected with the pressurizing pipeline 6, wherein the pressurizing pipeline 6 is connected with a tap water network 1; the user water supply line 7 has a pressure reducing valve 71, a solenoid valve 72, a pressure sensor 73, a safety valve 74, a water use end 75, and a controller; the pressure reducing valve 71, the electromagnetic valve 72, the pressure sensor 73 and the safety valve 74 are connected in series between the pressure pipeline 6 and the water using end 75; the pressure sensor 73 and the electromagnetic valve 72 are both connected with the controller; in this embodiment, the corresponding user water supply pipeline 7 is selected according to the water pressure requirements of users at different heights, and the pressure adjustment is facilitated by adjusting the pressure reducing valve 71 to make the corresponding water end 75 have the water pressure required by the user; the pressure sensor 73 is used for checking the pressure of the pipeline behind the electromagnetic valve 72, and when the measured pressure value exceeds a pressure threshold value set in the controller, the controller outputs a signal to close the electromagnetic valve 72 to cut off the pipeline, so that the pipe explosion accident is avoided; when the pressure sensor, the controller or the electromagnetic valve fails to stop the pipeline in time, the pressure of the water supply pipeline of the user continues to rise, and at the moment, the safety valve 74 is switched on to discharge water into the drainage pipe network 9, so that the pressure of the water supply pipeline of the user is released, and the pipe burst accident is avoided; in the embodiment, the electromagnetic valve state is subjected to feedback adjustment through the pressure sensor, and the safety valve releases pressure to prevent the occurrence of pipe explosion accidents, so that the reliability is higher compared with the prior art; wherein the triggering pressure of the safety valve 74 is slightly greater than the pressure threshold set in the control, but lower than the maximum pressure that the user water supply line 7 can withstand.

In some embodiments, the drain end 741 of the relief valve 74 is connected to the overflow tank 8 by an overflow line 742, the overflow line 742 extending to an inner bottom of the overflow tank 8; when the pressure inside the user water supply pipeline 7 increases to trigger the safety valve 74, the water discharge end 741 of the safety valve 74 discharges water into the overflow tank 8 through the overflow pipeline 742, so that waste of water resources is avoided; wherein the water stored in the overflow tank 8 can be pumped out by a water pump to be used as water for landscapes and gardens.

In some embodiments, the top of the overflow pipe 8 is connected to the drain network 9 through a pipeline, and when the overflow tank 8 is full, the maintenance treatment is not available, and the continuously overflowing water will flow out to the drain network 9 through the overflow tank 8.

In some embodiments, the pressurizing pipeline 6 has a first stop valve 61, a pressure maintaining pump 62, a check pump 63 and a second stop valve 64 connected in series, the pressure maintaining pump 62 is used for pressurizing the pipeline, and the check valve 63 can effectively prevent water from flowing back.

In some embodiments, a main valve 2 and a surge tank 5 are connected in series between the pressurization pipeline 6 and the tap water network 1.

In some embodiments, a filter 3 is connected in series between the main valve 2 and the surge tank 5, and impurities in the tap water can be effectively filtered by the filter 3.

In some embodiments, a backflow preventer 4 is connected in series between the filter 3 and the surge tank 5, and the backflow preventer 4 prevents backflow of the pipe water flow.

In some embodiments, three user water supply lines 7 are connected to the pressure line 6, and the user use at different floor heights can be satisfied by adjusting the corresponding pressure reducing valves 71.

In some embodiments, the controller is a PLC controller.

In some embodiments, a water supply apparatus is disclosed having an overpressure protection device as in any one of the above embodiments.

Thus far, various embodiments of the present invention have been described in detail. Some details which are well known in the art have not been described in order to avoid obscuring the concepts of the present invention. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An overpressure protection device is characterized by comprising a pressurizing pipeline and at least one user water supply pipeline connected with the pressurizing pipeline, wherein the pressurizing pipeline is connected with a tap water pipe network;

the user water supply pipeline is provided with a pressure reducing valve, an electromagnetic valve, a pressure sensor, a safety valve, a water using end and a controller;

the pressure reducing valve, the electromagnetic valve, the pressure sensor and the safety valve are connected in series between the pressurizing pipeline and the water using end;

the pressure sensor and the electromagnetic valve are both connected with the controller.

2. An over-pressure protection device according to claim 1, wherein: the water discharge end of the safety valve is connected with an overflow tank through an overflow pipeline, and the overflow pipeline extends to the inner bottom of the overflow tank.

3. An over-pressure protection device according to claim 2, wherein: the top of the overflow pipe is connected with a drainage pipe network through a pipeline.

4. An over-pressure protection device according to claim 1, wherein: the pressurization pipeline is provided with a first stop valve, a pressure stabilizing pump, a check pump and a second stop valve which are connected in series.

5. Overpressure protection device according to claim 1, characterized in that: and a main valve and a pressure stabilizing tank are connected in series between the pressurizing pipeline and the tap water pipe network.

6. Overpressure protection device according to claim 5, characterized in that: and a filter is connected in series between the main valve and the surge tank.

7. An over-pressure protection device according to claim 6, wherein: and a backflow preventer is connected in series between the filter and the pressure stabilizing tank.

8. An over-pressure protection device according to claim 1, wherein: and the pressurizing pipeline is connected with three user water supply pipelines.

9. Overpressure protection device according to claim 1, characterized in that: the controller is a PLC controller.

10. A water supply apparatus characterized by: having an overpressure protection arrangement according to any one of claims 1 to 9.