Air pressurizing device based on water hammer effect

Abstract

The utility model relates to the technical field of water pump water delivery and air pressurization, in particular to an air pressurization device based on a water hammer effect, which comprises a valve body, a valve clack or a cover plate and an elastic structural member, the valve body is of a hollow cylindrical structure, the valve clack or the cover plate can close or open a hollow channel in the valve body, and the valve clack or the cover plate can close or open the hollow channel in the valve body without external force. And the elastic structural member keeps the valve clack or the cover plate in a normally open state. According to the hydraulic ram pump, one or more pressurizing devices are additionally arranged on the basis of an original hydraulic ram pump, gas is continuously supplemented into the pressure tank, water delivery of the hydraulic ram pump is kept efficient and stable, and compressed air in the pressure tank can be used for other purposes.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump water delivery and air pressurization, in particular to an air pressurization device based on water hammer effect. Background Art

[0002] With the progress of society and the recognition of the limitations of petrochemical energy applications, people are paying more and more attention to various devices that directly convert natural forces into power. As a pumping equipment that can operate effectively without secondary energy such as electricity or fuel, especially in remote mountainous areas where electricity is scarce, the water hammer pump is an ideal natural force conversion device. The existing technology represented by the disclosed "2023219624942 An adjustable multi-valve water hammer pump", in which the function of the pressure tank is that the high-pressure air in the tank will press the water flow under the tank out of the water pipe and transport the water to a high place. During use, a problem often occurs. Although some equipment is equipped with an air replenishment valve, the gas in the pressure tank will become less and less, resulting in lower and lower working efficiency of the water hammer pump, especially for relatively large water hammer pumps. The problem is more obvious. In response to this problem, the utility model provides a new solution. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an air pressurizing device based on the water hammer effect to solve the problems listed in the background technology.

[0004] An air pressurizing device based on the water hammer effect includes a valve body 201, a valve flap 204 or a cover plate 207 and an elastic structural member, wherein the valve body 201 is a hollow cylindrical structure, the valve flap 204 or the cover plate 207 can close or open the hollow channel inside the valve body 201, and in the absence of external force, the elastic structural member keeps the valve flap 204 or the cover plate 207 in a normally open state.

[0005] Furthermore, the elastic structural member is a spring 203, and also includes a valve stem 202 and a limiting nut 205. The valve stem 202 is coaxial with the valve body 201 and slides through the valve body 201. The spring 203, valve disc 204 and limiting nut 205 are installed on the valve stem 202. There is a limiting nut 205 on each of the upper and lower surfaces of the valve disc 204 to fix it on the valve stem 202; the spring 203 is inserted into the valve stem 202, and the two ends of the spring 203 are in contact with the valve body 201 and the limiting nut 205 respectively; the diameter of the valve disc 204 is larger than the inner hole diameter of the valve body 201; rotating the limiting nut 205 can adjust the distance between the valve disc 204 and the end face of the valve body 201.

[0006] Furthermore, the elastic structural member is a torsion spring 206 or a tension spring 208 installed in the valve body, and the cover plate 207 and the valve body 201 are hingedly connected.

[0007] Furthermore, the pressurizing device is installed below the pressure tank, and is installed in a slanting manner in a pipeline between the water hammer pump pressure relief valve and the pressure tank, and one end of the valve body is exposed to the external air.

[0008] Furthermore, the pressurizing device is installed on the outside of the water hammer pump using a three-way pipe, one end of the valve body is exposed to the outside air, the other end of the valve body is connected to the pressure tank through a pipeline, and the third opening of the three-way pipe is connected to the pipeline between the pressure relief valve of the water hammer pump and the pressure tank.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model has the beneficial effect that one or more pressurizing devices are added to the original water hammer pump to continuously replenish gas into the pressure tank, so that the water delivery of the water hammer pump remains efficient and stable, and the compressed air in the pressure tank can also be used for other purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of Example 1;

[0012] Figure 2 It is a structural schematic diagram of Example 2;

[0013] Figure 3 It is a structural schematic diagram of Example 3;

[0014] Figure 4 This is a schematic diagram of application scenario 1 of the embodiment;

[0015] Figure 5 This is a schematic diagram of application scenario 2 of the embodiment;

[0016] Figure 6 This is a schematic diagram of application scenario 3 of the embodiment;

[0017] Figure 7 This is a schematic diagram of the pressure relief valve structure of a water hammer pump;

[0018] Figure 8 This is a schematic diagram of the center valve structure of the water hammer pump.

[0019] In the figure: 1-pressure tank; 2-pressurizing device; 3-drain valve; 4-large pressure tank; 5-large water hammer pump; 8-center valve; 201-valve body; 202-valve stem; 203-spring; 204-valve disc; 205-limit nut, 206-torsion spring; 207-cover plate; 208-tension spring; 301-valve disc shaft; 302-ram nut; 303-weight plate; 304-limit nut; 305-axle outer bracket; 306-valve top cover; 307-PU shock-absorbing valve disc; 308-limit nut; 309-wear-resistant bushing; 310-drain valve body; 801-center valve body; 802-PU valve disc; 803-fixing screw; 804-spring; 805-stainless steel valve disc; 806-center valve top cover. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiments listed in the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0021] Example 1: A pressurizing device utilizing the water hammer effect Figure 1 As shown, it includes a valve body 201, a valve stem 202, a spring 203, a valve disc 204, and a limiting nut 205. The valve body 201 is a hollow sleeve structure, and the valve stem 202 is coaxial with the valve body 201 and passes through the valve body 201 to slide; the valve stem 202 is equipped with a spring 203, a valve disc 204 and a limiting nut 205, and the upper and lower surfaces of the valve disc 204 each have a limiting nut 205 to fix it on the valve stem 202; the spring 203 is inserted into the valve stem 202, and the two ends of the spring 203 are in contact with the valve body 201 and the limiting nut 205 respectively; the diameter of the valve disc 204 is larger than the inner hole diameter of the valve body 201; adjusting the limiting nut 205 can adjust the distance between the valve disc 204 and the end face of the valve body 201, and keep the valve disc 204 and the end face of the valve body 201 in a normally open state.

[0022] Example 2: A pressurizing device utilizing the water hammer effect Figure 2 As shown, it includes a valve body 201, a torsion spring 206 and a cover plate 207, wherein the valve body 201 is a hollow sleeve structure, the cover plate 207 is located at one end of the valve body 201, and the diameter of the cover plate 207 is larger than the inner hole diameter of the valve body 201, the cover plate 207 and the valve body 201 are hingedly connected, the torsion spring 206 is installed on the valve body 201, and one end of the torsion spring 206 props up the cover plate 207, so that the cover plate 207 and the end surface of the valve body 201 remain in a normally open state.

[0023] Example 3: A pressurizing device utilizing the water hammer effect Figure 3 As shown, it includes a valve body 201, a torsion spring 206 and a cover plate 207, wherein the valve body 201 is a hollow sleeve structure, the cover plate 207 is located at one end of the valve body 201, and the diameter of the cover plate 207 is larger than the inner hole diameter of the valve body 201, the cover plate 207 and the valve body 201 are hingedly connected, and a tension spring 208 is installed between the valve body 201 and the cover plate 207, and the tension spring 208 keeps the cover plate 207 and the end face of the valve body 201 in a normally open state.

[0024] Example application scenario 1: Figure 4 As shown, a pressurizing device utilizing the water hammer effect is installed below the pressure tank 3 of the water hammer pump. The pressurizing device 2 is installed in a pipeline between the water hammer pump pressure relief valve 1 and the pressure tank 3 in an oblique insertion manner. One end of the valve body 201 equipped with the valve disc 204 is located directly below the opening of the pressure tank 3, and the other end of the valve body 201 is exposed to the external air.

[0025] Example application scenarios 2 and 3: Figure 5 , 6 As shown, a pressurizing device utilizing the water hammer effect is installed outside the water hammer pump. The pressurizing device 2 is connected to one end of the coaxial channel of the tee by a tee, that is, the end of the pressurizing device equipped with a valve disc is installed in the tee, and the other end of the pressurizing device is exposed to the external air; the other end of the coaxial channel of the tee is connected to the pressure tank 3, and the third channel of the tee is connected to the pipeline between the pressure relief valve of the water hammer pump and the pressure tank. Figure 5 The figure shown is suitable for the transformation of existing large-scale water hammer pump equipment.

[0026] How it works:

[0027] Since the valve flap of the pressurizing device is normally open and connected to the outside air, there will always be gas in the pipe above the valve flap. When the water flow is pressed into the pressure tank by the water hammer effect, this part of the gas will be brought into the pressure tank together. This part of the gas will rise and remain in the pressure tank. After the water hammer effect disappears, the water in the pressure tank will flow out due to the air pressure in the tank, and the generated water flow pressure will close the valve flap, so that the water flow will be transported outward to a higher place. When the pressure gradually decreases, the valve flap opens again due to the elastic force, and the air will enter the pipe again. Until the next water hammer effect occurs again, the above process is repeated, and the cycle continues. Air will be continuously pressed into the pressure tank, so that the pressure in the pressure tank is always maintained at a certain pressure. That is, the high water delivery efficiency of the water hammer pump is maintained, and the compressed gas generated can be used for other purposes.

[0028] The drain valve 3, also known as the wastewater valve, is an important component of the water hammer pump and is the key to generating the water hammer effect. It includes a valve disc shaft 301, a clevis nut 302, a counterweight 303, a limit nut 304, an outer shaft bracket 305, a valve top cover 306, a PU shock-absorbing valve disc 307, a limit nut 308, a wear-resistant sleeve 309 and a drain valve body 310. The clevis nut 302, the counterweight 303, the limit nut 304, the outer shaft bracket 305, the valve top cover 306, the PU shock-absorbing valve disc 307, the limit nut 308 and the wear-resistant sleeve 309 are all fixed in series on the valve disc shaft 1. Except for the outer shaft bracket 305, the valve top cover 306 and the drain valve body 310, other components can move up and down with the valve disc shaft 301. The material of the PU damping valve flap 307 is polyester fiber or other non-metallic materials, because the PU damping valve flap 307 will produce a strong impact with the sealing surface on the valve top cover 306 under the action of water flow during operation. Since the valve top cover 306 is usually made of metal, it can avoid collision between metals and play a role in reducing noise. By adjusting the weight of the counterweight plate 303, the opening and closing speed of the drain valve can be adjusted, so that each drain valve works synchronously to achieve the maximum water output.

[0029] The center valve 8 is also called a pressure relief valve, which is also an important component of the water hammer pump and is used in conjunction with the drain valve 3. When subjected to the force of the water hammer effect, the water is pressed into the pressure tank 9 in cooperation with the water hammer force. At the same time, when subjected to the back pressure of the water pipe, the water inlet pipe is pressurized in the reverse direction, so that the drain valve 3 can be reopened by gravity. The center valve 8 includes a center valve body 801, a PU valve disc 802, a fixing screw 803, a spring 804, a stainless steel valve disc 805 and a center valve top cover 806. The stainless steel valve disc 805 is a T-shaped shaft-like part. The diameter of the PU valve disc 802 is the same as that of the stainless steel valve disc 805. The fixing screw 803 fixes the PU valve disc 802 and the stainless steel valve disc 805. The elastic force generated by the spring 804 on the shaft of the stainless steel valve disc 805 keeps the PU valve disc 802 and the sealing surface on the center valve body 801 tightly closed. The shaft of the stainless steel valve disc 805 and the center valve top cover 806 slide in axial cooperation. During operation, the impact noise between the PU valve flap 802 made of high-strength non-metallic material and the sealing surface made of metal is greatly reduced, and the service life is also extended.

[0030] Water hammer pump operating principle:

[0031] 1. After opening the water inlet valve, the water flows from the high place along the water inlet pipe to the water hammer pump under the influence of the pressure difference, and flows out from the opened drain valve. The outflowing water will impact the valve disc of the drain valve, and drive the valve disc to move upward until it fits with the sealing surface on the valve top cover, forcing the drain valve to close instantly.

[0032] 2. When the drain valve is closed instantly, the water flow in the pipe will continue to move forward due to water pressure and inertia, impacting and transmitting pressure to the water flow in front. The water flow under the drain valve disc is subjected to the most force of transmission and extrusion, which will gather and generate huge pressure, and release this pressure to the surroundings. This phenomenon is called water hammer effect. The pressure generated by the water hammer effect is huge and short-lived.

[0033] When the pressure of the short-term water hammer effect is transmitted backward to release the pressure, it will collide with the water pressure in the pipe to cause vibration and reduce part of the water pressure. When the pressure is transmitted to the bottom of the drain valve disc, it will release and offset the inflowing water. At the moment of offset, the drain valve disc falls downward under the action of gravity because there is no upward pressure support, and the drain valve is opened, and the inflowing water will flow out through the opened drain valve again, and then drive the drain valve to close again, generating the water hammer effect again, and entering the next cycle. This cycle repeats itself, and water will be continuously sent to high places.

[0034] The above-mentioned embodiments are only preferred embodiments of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Equivalent changes made by the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An air pressurizing device based on water hammer effect, comprising a valve body (201), a valve flap (204) or a cover plate (207) and an elastic structural member, characterized in that The valve body (201) is a hollow cylindrical structure, and the valve flap (204) or the cover plate (207) can close or open the hollow channel inside the valve body (201). In the absence of external force, the elastic structural member keeps the valve flap (204) or the cover plate (207) in a normally open state.

2. The air pressurizing device according to claim 1, characterized in that: The elastic structural member is a spring (203), and further comprises a valve stem (202) and a limiting nut (205); the valve stem (202) is coaxial with the valve body (201) and slides through the valve body (201); the spring (203), valve flap (204) and limiting nut (205) are mounted on the valve stem (202); each of the upper and lower surfaces of the valve flap (204) has a limiting nut (205) for fixing the valve stem (202); the spring (203) is inserted into the valve stem (202), and the two ends of the spring (203) are in contact with the valve body (201) and the limiting nut (205) respectively; the diameter of the valve flap (204) is larger than the inner hole diameter of the valve body (201); and the distance between the valve flap (204) and the end surface of the valve body (201) can be adjusted by rotating the limiting nut (205).

3. The air pressurizing device according to claim 1, characterized in that: The elastic structural member is a torsion spring (206) or a tension spring (208) installed in the valve body, and the cover plate (207) and the valve body (201) are hingedly connected.

4. The air pressurizing device according to claim 2 or 3, characterized in that: The pressurizing device is installed below the pressure tank, and is installed in a pipeline between the water hammer pump pressure relief valve and the pressure tank in an oblique insertion manner, and one end of the valve body is exposed to the external air.

5. The air pressurizing device according to claim 2 or 3, characterized in that: The pressurizing device is installed outside the water hammer pump, one end of the valve body is exposed to the external air, and the other end of the valve body is connected to the pressure tank through a pipeline.

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