Pressure water-storage device sealing structure

[0018] Example 1

[0019] Example 1 is basically as attached figure 1 with figure 2 Shown: a sealing structure of a pressure water storage device, including a housing 10, an elastic liner 20 and a pipe joint body 30. The elastic liner 20 is located in the housing 10, and an inflatable cavity 11 is formed between the two. An opening is provided at the upper end of the housing 10 , The upper end of the elastic liner 20 is provided with a water outlet, which is located in the opening; the pipe joint body 30 is provided with a water inlet channel 31, a water outlet channel 32, and an air filling port 33. The water inlet channel 31 and the water outlet channel 32 are the same as the water outlet Connected, the pipe joint body 30 is connected to the upper end of the housing 10, and the elastic inner liner 20 is pressed against the upper end of the housing 10. The outer edge of the upper end of the housing 10 is provided with a first annular groove, and a first sealing ring 40 is provided in the first annular groove The inner wall of the opening of the housing 10 is provided with a second annular groove, and the second annular groove is provided with a second sealing ring 50; the first sealing ring 40, the second sealing ring 50 are both provided with an expansion chamber 41, and the first The sealing ring 40 and the second sealing ring 50 are provided with air inlets communicating with the expansion chamber 41; the casing is provided with air passages 60 communicating with the air inlets of the first sealing ring 40 and the second sealing ring 50 respectively.

[0020] In this embodiment, the first sealing ring 40 and the second sealing ring 50 are annular. The ring-shaped sealing ring will not roll during use, so that the air inlet holes on the first sealing ring 40 and the second sealing ring 50 can always be connected with the air passage 60.

[0021] In this embodiment, the first sealing ring 40 and the second sealing ring 50 are arranged with three air inlet holes at equal intervals along their circumferential direction. The three equally spaced air intake holes can expand the first sealing ring 40 or the second sealing ring 50 uniformly, and the sealing effect is good.

[0022] Example 2

[0023] Such as image 3 As shown, the difference from Embodiment 1 is that this embodiment also includes a controller 70, an audible and visual alarm 80, and a pressure sensor 90 for detecting the pressure in the inflatable cavity 11. The pressure sensor 90 and an acousto-optic alarm 80 Both are electrically connected to the controller 70. The pressure sensor 90 can detect the pressure in the inflatable cavity 11 in real time. When the compressed gas in the inflatable cavity 11 leaks and the water storage device drains, the drain pressure becomes smaller, which will affect the drain process; in the same state (such as water injection) Upon completion or after the drainage is completed), the pressure sensor 90 detects that the pressure in the inflation chamber 11 has decreased, and transmits a signal to the controller 70. The controller 70 controls the external inflation device to inflate into the inflation port 33 to ensure water storage. Normal use of the device. When the pressure sensor 90 detects a large pressure change in the same state, the controller 70 controls the sound and light alarm 80 to give an alarm, so that the staff can detect the gas leakage in the inflatable cavity 11 in time.

[0024] Specific working principle:

[0025] The following takes Example 1 as an example: figure 1 with figure 2 As shown, in specific use, the inflation port 33 is filled with air first, and the pressure in the inflation cavity 11 increases and the elastic inner liner 20 is squeezed. When storing water, water is injected into the elastic liner 20 through the water inlet channel 31 on the pipe joint. At this time, the elastic liner 20 expands until the water in the elastic liner 20 exerts pressure on the elastic liner 20 and the inflation cavity The pressure in 11 is balanced, and the water injection is completed; when water is needed, the water outlet channel 32 is opened, and the compressed gas in the inflation cavity 11 squeezes the elastic inner liner 20, so that the water in the elastic inner liner 20 can be discharged through the water Channel 32 exits. The compressed gas with a relatively high pressure in the inflatable cavity 11 is usually easy to leak through the gap between the elastic liner 20 and the outer shell, and between the outer shell and the pipe joint body 30. In this solution, the compressed gas in the inflatable cavity 11 The compressed gas will enter the expansion chamber 41 of the first sealing ring 40 and the second sealing ring 50 through the air passage 60. The compressed gas will expand the first sealing ring 40 and the second sealing ring 50, which will cause the first sealing ring 40 to expand. The contact with the outer wall of the casing and the pipe joint body 30 is closer; the contact between the second sealing ring 50 and the inner wall of the casing and the outer wall of the elastic liner 20 is also closer, thereby achieving a better sealing effect. This solution cleverly utilizes the compressed gas in the inflation cavity 11 and effectively improves the sealing performance.