Pressure difference relief bypass device

Abstract

The utility model relates to a pressure difference relief bypass device, and belongs to the technical field of pressure relief equipment, the pressure difference relief bypass device comprises a pressure difference bypass pipe, the two ends of the pressure difference bypass pipe are connected with four-way valves, a pipe orifice at one end of one four-way valve is connected with a water distribution pipeline, a pipe orifice at one end of the other four-way valve is connected with a water collection pipeline, and the other end of the water collection pipeline is connected with a water supply pipeline. A pressure release valve is arranged at the end, away from the end connected with the water distribution pipeline, of the four-way valve. The device has the effect that the water distribution pipeline and the water collection pipeline are not prone to expansion damage due to too large pressure in the pipelines.

Description

Technical Field

[0001] The present application relates to the technical field of pressure relief equipment, and in particular to a pressure relief differential bypass device. Background Art

[0002] The pressure differential bypass valve is a valve used to balance the pressure difference between the supply / return water of the air-conditioning system. The pressure differential valve is superior to other balancing valves in that it has no actuator and completely uses the pressure difference of the medium itself to achieve the function of balancing the system, saving energy and installation space. It is an intelligent valve.

[0003] In the related art, for example, a Chinese utility model patent with publication number CN209605250U discloses a special water distributor for dual-generation floor heating, including a water distribution pipe, a water collection pipe and a connecting bracket, one end of the water distribution pipe and the water collection pipe is installed with a main pipe connector, the other end of the water distribution pipe is installed with an exhaust valve and a pressure difference bypass valve, the other end of the water collection pipe is connected to the pressure difference bypass valve, the water distribution pipe and the lower end of the outer surface of the water collection pipe are axially provided with a plurality of evenly distributed faucets, the faucets are provided with a branch pipe connection port, the A branch electric ball valve is fixedly installed on the faucet of the water distribution pipe, and a universal ball valve is fixedly installed on the faucet of the water collection pipe. Both ends of the connecting bracket are fixedly connected to the water distribution pipe and the water collection pipe respectively. The pressure differential bypass valve is used to automatically increase the opening when the number of rooms requiring heating decreases, the utilization rate of the branch decreases, and the pressure difference between the water distribution pipe and the water collection pipe increases, so that part of the water flow flows from the pressure differential bypass valve into the water distribution pipe to reduce the pressure difference. Conversely, when the pressure difference between the water distribution pipe and the water collection pipe decreases, the pressure differential bypass valve automatically reduces the opening to increase the pressure difference.

[0004] With respect to the above-mentioned related technologies, the following defects were found: the above-mentioned pressure differential bypass valve can only be used to increase or decrease the opening according to the pressure difference between the water distribution pipe and the water collection pipe, so that water can flow into or stop flowing into the water distribution pipe from the pressure differential bypass valve. However, when the pressure generated by the hot water flow in the water distribution pipe and the water collection pipe is too high, it is difficult for the pressure differential bypass valve to release the pressure, which may cause the water distribution pipe and the water collection pipe to over-expand and be damaged. Utility Model Content

[0005] In order to prevent the water distribution pipe and the water collection pipe from being easily expanded and damaged due to excessive pressure in the pipe, the present application provides a pressure relief differential bypass device.

[0006] The present application provides a pressure relief differential bypass device, which adopts the following technical solution:

[0007] A pressure relief differential bypass device comprises a pressure relief bypass pipe, both ends of which are connected to four-way valves, one end of one of the four-way valves is connected to a water distribution pipe, and one end of the other four-way valve is connected to a water collection pipe, and a pressure relief valve is provided at the end of the four-way valve away from the end connected to the water distribution pipe.

[0008] By adopting the above technical scheme, four-way valves are connected to both ends of the pressure differential bypass pipe, one end of one of the four-way valves is connected to the water distribution pipe, and one end of the other four-way valve is connected to the water collection pipe, so that the water distribution pipe and the water collection pipe are connected through the four-way valve and the pressure differential bypass pipe, and a pressure relief valve is provided at the end of the four-way valve away from the water distribution pipe. When the pressure generated by the hot water flow in the water distribution pipe and the water collection pipe is too high, the pressure in the pipe can be released through the pressure relief valve, which is beneficial to prevent the water distribution pipe and the water collection pipe from being damaged due to excessive expansion of the pipe due to excessive pressure in the pipe.

[0009] Optionally, a pressure gauge is provided at the end of the four-way valve away from the end connected to the water collection pipe.

[0010] By adopting the above technical solution, a pressure gauge is provided at the end of the four-way valve away from the end connected to the water collection pipe, so that the pressure value inside the pipe can be displayed through the pressure gauge, which can facilitate the user to observe the pressure in the pipe.

[0011] Optionally, a discharge pipe is provided on a side wall of the pressure relief valve close to an end connected to the four-way valve.

[0012] By adopting the above technical solution, a discharge pipe is provided at the side wall of the pressure relief valve close to the end connected to the four-way valve, so that when the pressure in the pipe is too high, the pressure can be discharged through the discharge pipe after the pressure relief valve is opened.

[0013] Optionally, a spring is provided on the discharge pipe.

[0014] By adopting the above technical solution, a spring is sleeved on the discharge pipe, so that the discharge pipe is not easily damaged due to thermal expansion and contraction under the action of the spring.

[0015] Optionally, a first quick connector is provided between the pressure difference bypass pipe and the four-way valve.

[0016] By adopting the above technical solution, a first quick connector is provided between the pressure differential bypass pipe and the four-way valve, so that one end of the first quick connector is connected to the pressure differential bypass pipe, and the other end of the first quick connector is connected to the four-way valve, which is conducive to the rapid installation or disassembly of the pressure differential bypass pipe and the four-way valve through the first quick connector.

[0017] Optionally, a second quick connector is provided at the pipe openings at one end of the two four-way valves respectively connected to the water distribution pipe and the water collection pipe.

[0018] By adopting the above technical solution, a second quick connector is provided at the pipe openings at one end of the two four-way valves respectively connected to the water distribution pipe and the water collection pipe. The four-way valve can be quickly connected to the water distribution pipe and the water collection pipe through the second quick connector, which facilitates the installation and disassembly between the four-way valve and the water distribution pipe and the water collection pipe.

[0019] Optionally, an exhaust valve is provided at one end of the four-way valve away from the end connected to the second quick connector.

[0020] By adopting the above technical solution, an exhaust valve is provided at one end of one of the four-way valves away from the end connected to the second quick connector, so that when there is air in the pipe, it can be discharged through the exhaust valve.

[0021] Optionally, a drain valve is provided at the end of the other four-way valve away from the end connected to the second quick connector.

[0022] By adopting the above technical solution, a drain valve is arranged at one end of the other four-way valve away from the end connected with the second quick connector, so that when there are impurities in the water flow, the impurities can be discharged through the drain valve.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] Four-way valves are connected to both ends of the pressure differential bypass pipe, one end of one of the four-way valves is connected to the water distribution pipe, and one end of the other four-way valve is connected to the water collection pipe, so that the water distribution pipe and the water collection pipe are connected through the four-way valve and the pressure differential bypass pipe, and a pressure relief valve is arranged at one end of the four-way valve away from the water distribution pipe, so that when the pressure generated by the hot water flow in the water distribution pipe and the water collection pipe is too high, the pressure in the pipe can be released through the pressure relief valve, which is conducive to preventing the water distribution pipe and the water collection pipe from being damaged due to excessive expansion caused by excessive pressure in the pipe;

[0025] A pressure gauge is provided at the end of the four-way valve away from the water collecting pipe, so that the pressure value inside the pipe can be displayed through the pressure gauge, which can facilitate the user to observe the pressure inside the pipe;

[0026] A discharge pipe is arranged on the side wall of the pressure relief valve close to the end connected to the four-way valve, so that when the pressure in the pipe is too high, the pressure can be discharged through the discharge pipe after the pressure relief valve is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the overall structure in the embodiment of the present application.

[0028] Explanation of the reference numerals: 1. pressure difference bypass pipe; 11. four-way valve; 111. upper four-way valve; 112. lower four-way valve; 12. first quick connector; 13. second quick connector; 14. pressure gauge; 15. exhaust valve; 16. drain valve; 161. valve switch; 2. pressure relief valve; 21. discharge pipe; 22. spring. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 This application is described in further detail.

[0030] The present application embodiment discloses a pressure relief differential bypass device. Figure 1 A pressure differential bypass device includes a pressure differential bypass pipe 1 and a pressure relief valve 2. The pressure relief valve 2 is connected to the pressure differential bypass pipe 1, so that when the pressure differential bypass pipe 1 is connected to the water distribution pipe and the water collection pipe, if the pressure in the pipe is too high due to the hot water flow, the pressure can be relieved through the pressure relief valve 2.

[0031] Reference Figure 1 A four-way valve 11 is connected to both ends of the pressure differential bypass pipe 1. The two ends of the pressure differential bypass pipe 1 provided with the four-way valve 11 are respectively the upper and lower ends of the pressure differential bypass pipe 1. The four-way valve 11 connected to the upper end of the pressure differential bypass pipe 1 is an upper four-way valve 111, and the four-way valve 11 connected to the lower end of the pressure differential bypass pipe 1 is a lower four-way valve 112. A first quick connector 12 is connected between the pressure differential bypass pipe 1 and the upper four-way valve 111 and between the pressure differential bypass pipe 1 and the lower four-way valve 112, so that the upper end pipe opening of the pressure differential bypass pipe 1 can be quickly installed or disassembled with the lower end of the upper four-way valve 111 through the first quick connector 12, and the lower end pipe opening of the pressure differential bypass pipe 1 can also be quickly installed or disassembled with the upper end of the lower four-way valve 112 through the first quick connector 12.

[0032] Reference Figure 1 A second quick connector 13 is connected to the left end pipe openings of the upper four-way valve 111 and the lower four-way valve 112. The upper four-way valve 111 is connected to the water distribution pipe through the second quick connector 13, and the lower four-way valve 112 is connected to the water collection pipe through the second quick connector 13, so that the water distribution pipe, the water collection pipe and the pressure difference bypass pipe 1 are connected.

[0033] Reference Figure 1 The pressure relief valve 2 is fixed at the right end of the upper four-way valve 111. In the present embodiment, when the pressure in the pipeline reaches three kilograms, the pressure relief valve 2 starts to automatically relieve pressure. Specifically, the existing floor heating has a control module, and the pressure value in the pipeline can be transmitted to the control module. When the pressure value in the pipeline reaches three kilograms, the control module can drive the pressure relief valve 2 to start pressure relief.

[0034] Reference Figure 1A discharge pipe 21 is fixed to the side wall of the pressure relief valve 2 near one end connected to the upper four-way valve 111. The discharge pipe 21 extends toward the lower four-way valve 112, so that the water pressure can be discharged through the discharge pipe 21 during pressure relief. In order to prevent the discharge pipe 21 from being damaged due to thermal expansion and contraction, a spring 22 is sleeved on the discharge pipe 21. A pressure gauge 14 is fixedly connected to the right end of the lower four-way valve 112, so that the user can also observe the pressure value in the pipeline through the pressure gauge 14.

[0035] Reference Figure 1 An exhaust valve 15 is fixedly connected to the upper end pipe mouth of the upper four-way valve 111. When air is generated in the pipeline, the exhaust valve 15 can automatically exhaust the air through the exhaust valve 15. A sewage valve 16 is connected to the lower end pipe mouth of the lower four-way valve 112. A valve switch 161 is provided at the sewage valve 16. When the water flow in the pipeline carries impurities, after a period of time, the valve switch 161 can be opened to allow the impurities in the pipeline to be discharged through the sewage valve 16. After the sewage is discharged, the valve switch 161 can be closed.

[0036] The implementation principle of a pressure relief differential bypass device in an embodiment of the present application is: when the local heating is used for a long time, and the pressure generated by the hot water flow in the water distribution pipe and the water collection pipe reaches three kilograms, the control module receives this information and drives the pressure relief valve 2 to open and start pressure relief. After opening the pressure relief valve 2, the water flow pressure in the pipe can flow out through the discharge pipe. When the pressure relief is completed, the control module closes the pressure relief valve 2.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressure relief differential bypass device, characterized in that: The invention comprises a pressure differential bypass pipe (1), both ends of which are connected to four-way valves (11), one end of the four-way valve (11) being connected to a water distribution pipeline, and one end of the four-way valve (11) being connected to a water collection pipeline, and one end of the four-way valve (11) being connected to a water distribution pipeline, and a pressure relief valve (2) being provided at the end of the four-way valve (11) which is away from the end connected to the water distribution pipeline.

2. A pressure relief differential bypass device according to claim 1, characterized in that: A pressure gauge (14) is provided at the end of the four-way valve (11) that is away from the end connected to the water collection pipe.

3. A pressure relief differential bypass device according to claim 2, characterized in that: A discharge pipe (21) is provided on a side wall of the pressure relief valve (2) close to the end connected to the four-way valve (11).

4. A pressure relief differential bypass device according to claim 3, characterized in that: The discharge pipe (21) is sleeved with a spring (22).

5. The pressure relief differential bypass device according to claim 1, characterized in that: A first quick connector (12) is provided between the pressure difference bypass pipe (1) and the four-way valve (11).

6. A pressure relief differential bypass device according to claim 5, characterized in that: A second quick connector (13) is provided at the pipe openings of one end of the two four-way valves (11) respectively connected to the water distribution pipe and the water collection pipe.

7. A pressure relief differential bypass device according to claim 6, characterized in that: An exhaust valve (15) is provided at one end of the four-way valve (11) that is away from the end connected to the second quick connector (13).

8. A pressure relief differential bypass device according to claim 7, characterized in that: The other four-way valve (11) is provided with a drain valve (16) at one end thereof which is away from the end connected to the second quick connector (13).

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