Differential pressure type air tank structure

Abstract

The utility model relates to a differential pressure type air tank structure. The method is suitable for the technical field of water conservancy and hydropower engineering. The technical problem to be solved by the application is to provide a differential pressure type air tank structure. According to the technical scheme, the differential pressure type air tank structure comprises a connecting pipe, an air inlet pipe, an air outlet pipe and an air outlet pipe, the air tank is connected to the upper end of the connecting pipe, a center through hole is formed in the center of the bottom of the air tank, and the diameter of the center through hole is smaller than the inner diameter of the water conveying pipeline; the throttling hole is located in the connecting pipe and provided with a turning section and a vertical section, the upper end of the turning section is matched and connected with the center through hole in the bottom of the air tank, and the lower end of the turning section is connected with the vertical section; the diameter of the vertical section is smaller than that of the central through hole of the air tank; the inner wall of the turning section is in smooth transition from the inner wall of the vertical section to the inner wall of the bottom of the air tank through the smooth curved surface, and the outer wall of the turning section is in smooth transition from the outer wall of the vertical section to the outer wall of the bottom of the air tank through the smooth curved surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of differential pressure type air tank structures.It is applicable to the field of water conservancy and hydropower engineering. BACKGROUND

[0002] With the wide application of industrial automation and pneumatic technology, the pressure stability in pneumatic system and the reliability of air supply are paid more and more attention. In the system that needs to run for a long time and maintain pressure stability, pressure fluctuation can cause performance decline and sudden increase of pressure in tank. In engineering application, differential pressure type air tank mainly controls water pressure by monitoring and adjusting the air pressure difference inside and outside the air tank. The traditional air tank is generally connected with pipeline through conical orifice, and the resistance loss of inlet and outlet is basically equal, so that the control of pressure is not accurate enough. SUMMARY

[0003] The utility model solves the technical problems existing in the above, and provides a kind of differential pressure type air tank structure.

[0004] The utility model adopts the technical scheme that a kind of differential pressure type air tank structure, characterized by, comprising:

[0005] Connecting pipe, its lower end is communicated with water delivery pipeline;

[0006] Air tank, connect on the upper end of the connecting pipe, the center through-hole is equipped in the bottom center of the air tank, and the center through-hole diameter is less than the inner diameter of water delivery pipeline;

[0007] Throttling hole, located in the connecting pipe, with turning section and vertical section, wherein the upper end of turning section is adapted and connected with the center through-hole in the bottom of air tank, and the lower end of turning section is connected with vertical section;

[0008] The vertical section is vertically arranged and the diameter is less than the diameter of air tank center through-hole;The inner wall of turning section is smoothly transitioned from the inner wall of vertical section to the inner wall of air tank bottom through smooth surface, and the outer wall of turning section is smoothly transitioned from the outer wall of vertical section to the outer wall of air tank bottom through smooth surface.

[0009] The lower end port position of throttling hole corresponds to the lower end port position of connecting pipe.

[0010] The air tank top is equipped with pressure sensor for collecting the pressure in air tank.

[0011] The utility model discloses beneficial effect is: the utility model discloses the inner wall of throttling hole turning section from vertical section inner wall is smooth transition to air tank bottom inner wall through smooth surface, and the outer wall of turning section is smooth transition to air tank bottom outer wall through smooth surface from vertical section outer wall, when the water flow is from air tank and flows out, through the throttling hole mouth that is smooth and does the rounding treatment, and the resistance and resistance loss that receives are very small, can effectively prevent the pressure in air tank and rapidly reduce, when the water flow is from the pipeline and flows to air tank through the connecting pipe, because the connecting pipe and water delivery pipeline interface are arranged at right angles, and the water flow receives the obstruction and thus the resistance and resistance loss that receives are very big, can effectively prevent the pressure in air tank and rapidly rise.

[0012] The utility model discloses through throttling hole and connecting pipe cooperation, make the resistance loss of inflow and outflow tank body not equal, thereby effectively control the pressure in tank body, guarantee the safety and stability of air tank, improve the efficiency of system. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is structural schematic diagram of the differential pressure type air tank structure in the embodiment.

[0014] Figure 2 It is water flow out tank body schematic diagram in the differential pressure type air tank structure in the embodiment.

[0015] Figure 3 It is water flow in tank body schematic diagram in the differential pressure type air tank structure in the embodiment.

[0016] Mark: 1-air tank, 2-connecting pipe, 3-water delivery pipeline, 4-pressure sensor, 5-throttling hole. DETAILED DESCRIPTION

[0017] In order to better understand the technical scheme of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0018] It should be clear that the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0019] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0020] It should be understood that the term "and / or" as used herein merely describes an associated relationship between associated objects, and can represent three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0021] It should be noted that the terms "upper", "lower", "left", "right" and the like described in the embodiments of the present application are described from the angle shown in the drawings, and should not be understood as a limitation on the embodiments of the present application. In addition, in the context, it should also be understood that when referring to an element connected to another element "on" or "below", it can be directly connected to another element "on" or "below", or indirectly connected to another element "on" or "below" through an intermediate element.

[0022] As shown in Figure 1 The embodiment is a differential pressure type air tank structure, which comprises a connecting pipe, an air tank and a throttle hole, wherein the lower end of the air tank is connected to the water pipeline below through the connecting pipe, the lower end of the connecting pipe is in vertical communication with the water pipeline, the center through hole is arranged at the center position of the bottom of the air tank, the diameter of the center through hole is smaller than the inner diameter of the connecting pipe, and the throttle hole in communication with the air tank is installed corresponding to the center through hole.

[0023] In this example, the throttle hole is located at the center position of the connecting pipe, and the throttle hole is divided into a turning section and a vertical section from top to bottom, wherein the upper end of the turning section is matched and connected with the center through hole at the bottom of the air tank, and the lower end of the turning section is connected with the vertical section; the vertical section is vertically arranged and has a diameter smaller than that of the center through hole of the air tank, and the lower end port position of the vertical section corresponds to the lower end port position of the connecting pipe.

[0024] In this embodiment, the inner wall of the turning section smoothly transitions from the inner wall of the vertical section to the inner wall of the bottom of the air tank through a smooth curved surface, and the outer wall of the turning section smoothly transitions from the outer wall of the vertical section to the outer wall of the bottom of the air tank through a smooth curved surface.

[0025] In this embodiment, the air tank and the water pipeline are connected vertically through the connecting pipe, the connecting pipe serves as a position for increasing resistance loss of water flow into the tank body, and is connected at a right angle with the water pipeline (with a diameter of about 4R) without any treatment, and the diameter of the connecting pipe is about 5R. The connecting pipe contains a throttle hole, the upper end of the throttle hole has a diameter of about 2R, the cross-sectional area of the throttle hole is smaller than that of the connecting pipe, the longitudinal section of the side wall of the turning section is a circular arc section with a diameter of about R; the length of the vertical section is about 0.4R.

[0026] Figure 2For the case of water flowing out of the tank through the orifice of the differential pressure air tank, the arrow direction in the figure is the water flow direction, indicating that at this time the water from the tank is flowing into the water pipeline. When the water flows through the smooth and rounded orifice, the resistance and resistance loss are very small, which can effectively prevent the pressure in the air tank from rapidly decreasing. At this time, the pressure sensor at the top of the air tank can read the corresponding internal pressure of the tank.

[0027] Figure 3 For the case of water flowing into the tank through the orifice of the differential pressure air tank. The arrow direction in the figure is the water flow direction, indicating that at this time the water from the water pipeline is flowing into the tank. When the water flows from the pipeline to the air tank through the connecting pipe, due to the right angle arrangement of the connecting pipe and the water pipeline interface, part of the water flow will hit the middle area between the connecting pipe and the orifice and cannot enter the tank, the water flow is hindered and the resistance and resistance loss are very large, which can effectively prevent the pressure in the air tank from rapidly rising. At this time, the pressure sensor at the top of the air tank can read the corresponding internal pressure of the tank.

[0028] The material of the orifice should be selected from corrosion-resistant, wear-resistant and rigid materials such as stainless steel or other metals to ensure the stability and durability of the orifice.

[0029] The installation position of the orifice should be as possible as in the middle of the air tank bottom and the connecting pipe section, arranged in a symmetrical form relative to the tank axis, to ensure that the water flow through the orifice can achieve the predetermined resistance loss. Under the same flow conditions, the ratio of the water head loss of the water flowing into the air tank to the water head loss of the water flowing out of the air tank is usually 2.5:1.

Claims

1. A differential pressure air tank structure, characterized by, The utility model relates to a kind of air supply device for water supply pipe, including: Connecting pipe, lower end is communicated water conduit; Air tank, is connected to the upper end of the connecting pipe, the center through-hole is provided in the bottom center of the air tank, and the diameter of the center through-hole is less than the inner diameter of water conduit; Throttle hole, located in the connecting pipe, has turning section and vertical section, wherein the upper end of turning section is matched and connected with the center through-hole in the bottom of the air tank, and the lower end of turning section is connected with vertical section; The vertical section is vertically arranged and the diameter is less than the diameter of the center through-hole of the air tank;The inner wall of the turning section is smoothly transitioned from the inner wall of the vertical section to the inner wall of the bottom of the air tank through smooth surface, and the outer wall of the turning section is smoothly transitioned from the outer wall of the vertical section to the outer wall of the bottom of the air tank through smooth surface.

2. The differential pressure air tank structure according to claim 1, characterized by The lower port position of the throttle hole corresponds to the lower port position of the connecting pipe.

3. The differential pressure air tank structure according to claim 1, wherein The top of the air tank is provided with a pressure sensor for collecting the pressure in the air tank.

Images