A buffer

Abstract

This utility model relates to the field of liquid flow pipeline protection, and discloses a buffer including a lower shell and an upper shell. The open end of the lower shell is connected to the open end of the upper shell, and a diaphragm is provided at the connection between the two. A lower isolation plate is provided inside the lower shell, and at least two lower isolation plates are provided along the length direction of the lower shell. An upper isolation plate is provided inside the upper shell, and at least two upper isolation plates are provided along the length direction of the upper shell. The number of lower isolation plates is the same as the number of upper isolation plates. The upper isolation plates and their corresponding lower isolation plates are located in the same plane, and the two sides of the diaphragm are connected to the upper isolation plate and the lower isolation plate respectively. A connecting hole is provided on the upper isolation plate. The lower isolation plate divides the inner cavity of the lower shell into several chambers. Each chamber is provided with a constraint component, which is used to constrain the bulging size of the diaphragm during buffering.

Description

Technical Field

[0001] This utility model relates to the field of liquid flow pipelines, specifically to the field of liquid flow pipeline protection, and particularly to a buffer. Background Technology

[0002] Pulsed water hammer, also known as water hammer effect or hydraulic impact, is a phenomenon in which fluid in a pipeline experiences violent pressure fluctuations caused by sudden changes in flow velocity (such as rapid valve closure or pump start-up and shutdown). These pressure waves propagate within the pipeline and can lead to pipeline vibration, noise, and even equipment damage.

[0003] In response to the water hammer effect, existing technologies involve installing buffers in liquid flow pipelines to absorb pressure waves. Furthermore, existing buffer technologies only have an internal isolation wall and absorb pressure waves through a diaphragm. If the pressure wave caused by the water impact is large, it can easily damage the diaphragm.

[0004] Based on the above problems, this utility model proposes a buffer. Utility Model Content

[0005] To address the problems mentioned in the background above, this utility model provides a buffer.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows.

[0007] A buffer includes a lower housing and an upper housing. The open end of the lower housing is connected to the open end of the upper housing, and a diaphragm is provided at the connection between the two. A lower isolation plate is provided inside the lower housing, and at least two lower isolation plates are provided along the length direction of the lower housing. An upper isolation plate is provided inside the upper housing, and at least two upper isolation plates are provided along the length direction of the upper housing. The number of lower isolation plates is the same as the number of upper isolation plates. The upper isolation plates and their corresponding lower isolation plates are located in the same plane, and the two sides of the diaphragm are connected to the upper isolation plate and the lower isolation plate, respectively. A connecting hole is provided on the upper isolation plate.

[0008] As a further improvement and optimization of this utility model, when the upper shell and the lower shell are connected, the distance between the upper isolation plate and the lower isolation plate is less than the thickness of the diaphragm.

[0009] As a further improvement and optimization of this utility model, the upper shell is provided with nozzles on both sides along the length direction. The two nozzles are an inlet nozzle for liquid inflow and an outlet nozzle for liquid outflow.

[0010] As a further improvement and optimization of this utility model, the lower isolation plate divides the inner cavity of the lower shell into several chambers, and each chamber is provided with a constraint component, which is used to constrain the bulging size of the diaphragm during buffering.

[0011] As a further improvement and optimization of this utility model, the constraint assembly includes a constraint plate that is slidably disposed in the cavity of the lower housing along the extension direction of the inner cavity of the lower housing, and a telescopic member for adjusting the position of the constraint plate in the cavity of the lower housing.

[0012] As a further improvement and optimization of this utility model, the telescopic component includes a threaded shaft, the axis of which is parallel to the inner cavity extension direction of the lower housing. One end of the threaded shaft is rotatably connected to the constraint plate, and the other end of the threaded shaft extends out of the lower housing. The closed end of the lower housing is provided with a threaded hole, and the threaded shaft passes through the threaded hole, and the two form a threaded connection.

[0013] As a further improvement and optimization of this utility model, a connecting groove is provided on the side of the constraint plate away from the diaphragm, and the threaded shaft is connected to the connecting groove by a bearing.

[0014] As a further improvement and optimization of this utility model, a knob is provided at the end of the threaded shaft extending out of the lower housing.

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] This design uses a diaphragm and air inside the lower housing as buffering media to buffer the pressure waves brought by the water flow. On this basis, at least two upper and lower baffles are set up to form at least a triple buffer structure. Through this multi-stage pressure reduction design, the direct effect of fluid impact on the diaphragm can be reduced more effectively. That is, the diaphragm is equivalent to being divided into several buffer parts located between the upper and lower baffles. The pressure waves brought by the water flow act on these buffer parts one by one, resulting in a better multi-buffering effect.

[0017] Furthermore, each chamber of the lower housing is equipped with a constraint component to constrain the bulge size of the diaphragm's buffer portion. The technical advantage lies in the fact that by adjusting the position of the constraint plate in each constraint component, the pressure wave energy absorbed by each buffer portion of the diaphragm is kept approximately consistent, thus maximizing the buffering performance of the diaphragm and significantly extending its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0019] Figure 2 This is a cross-sectional view of Embodiment 1 of the present invention;

[0020] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0021] Figure 4 This is a cross-sectional view of Embodiment 2 of the present invention;

[0022] Figure 5 This is an exploded view of the constraint components.

[0023] The labels in the attached diagram are:

[0024] 1. Lower housing; 2. Upper housing; 3. Inlet nozzle; 4. Outlet nozzle; 5. Diaphragm; 6. Upper isolation plate; 7. Connecting hole; 8. Lower isolation plate; 9. Constraint assembly; 901. Constraint plate; 902. Threaded shaft; 903. Connecting groove; 904. Bearing; 905. Knob. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Example 1

[0027] Reference Figure 1 and Figure 2 A buffer includes a lower housing 1 and an upper housing 2, wherein the open end of the lower housing 1 is connected to the open end of the upper housing 2, and a diaphragm 5 is provided at the connection between the two.

[0028] The lower housing 1 is provided with a lower partition plate 8. At least two lower partition plates 8 are provided along the length of the lower housing 1, thereby dividing the inner cavity of the lower housing 1 into at least three chambers.

[0029] An upper partition plate 6 is provided inside the upper shell 2. At least two upper partition plates 6 are provided along the length of the upper shell 2, thereby dividing the inner cavity of the upper shell 2 into at least three chambers.

[0030] The number of lower isolation plates 8 is the same as the number of upper isolation plates 6. The upper isolation plates 6 and the corresponding lower isolation plates 8 are located in the same plane, and the two sides of the diaphragm 5 are connected to the upper isolation plate 6 and the lower isolation plate 8 respectively. Furthermore, when the upper housing 2 and the lower housing 1 are assembled, the distance between the upper isolation plate 6 and the lower isolation plate 8 is less than the thickness of the diaphragm 5, thereby clamping the diaphragm 5 and realizing the connection between the diaphragm 5 and the upper isolation plate 6 or the lower isolation plate 8.

[0031] The upper isolation plate 6 is also provided with a connecting hole 7, which is used to connect two adjacent chambers of the upper shell 2.

[0032] The upper housing 2 has nozzles on both sides along its length. The two nozzles are an inlet nozzle 3 for liquid inflow and an outlet nozzle 4 for liquid outflow.

[0033] The working process of Example 1 is specifically as follows:

[0034] Liquid flows into the upper housing 2 through the inlet 3, then flows through the connecting hole 7 within the upper housing 2, and finally flows out through the outlet 4. During this process, the pressure wave generated by the water flow will act on the lower diaphragm 5. The diaphragm 5 and the air in the lower housing 1 act as buffering media to achieve the buffering effect of the pressure wave.

[0035] In addition, the combination of at least two upper baffles 6 and lower baffles 8 forms at least a triple buffer structure. Through this multi-stage pressure reduction design, the direct effect of fluid impact on the diaphragm 5 can be more effectively reduced. That is, the diaphragm 5 is equivalent to being divided into several buffer parts located between the upper baffles 6 and the lower baffles 8. The pressure waves brought by the water flow act on these buffer parts one by one, and the multi-buffer effect is better.

[0036] Example 2

[0037] Along the direction of water flow, the pressure wave on the buffer portion of diaphragm 5 gradually decreases. This makes it easy for the buffer portion of diaphragm 5 at the front to be damaged by a larger pressure wave, while the buffer portion at the rear remains intact due to a smaller pressure wave. In this case, the buffering performance of diaphragm 5 is not maximized, and diaphragm 5 needs to be replaced. Therefore, an improved embodiment is proposed.

[0038] Reference Figures 3-5 Each chamber of the lower housing 1 is equipped with a constraint component 9.

[0039] The constraint assembly 9 includes a constraint plate 901 that is slidably disposed within the cavity of the lower housing 1 along the extension direction of the inner cavity of the lower housing 1, and a telescopic member for adjusting the position of the constraint plate 901 within the cavity of the lower housing 1.

[0040] The telescopic component includes the threaded shaft 902.

[0041] A connecting groove 903 is provided on the side of the constraint plate 901 away from the diaphragm 5. The axis of the threaded shaft 902 is parallel to the inner cavity extension direction of the lower housing 1. One end of the threaded shaft 902 is connected to the connecting groove 903 through the bearing 904. The other end of the threaded shaft 902 extends out of the lower housing 1 and is provided with a knob 905. A threaded hole is provided at the closed end of the lower housing 1. The threaded shaft 902 passes through the threaded hole and the two form a threaded connection.

[0042] The working process of Example 2 is specifically as follows:

[0043] By turning knob 905, the threaded shaft 902 can rotate and move simultaneously, moving the constraint plate 901 along with it. By changing the distance between the constraint plate 901 and the diaphragm 5, the bulging size of the diaphragm 5 during buffering can be constrained, thus constraining the buffering performance of the diaphragm 5. Its technical advantages are:

[0044] Different liquid flow pipelines can generate different maximum values ​​of pressure waves. As can be seen from Embodiment 1, the pressure wave received by the buffer part of diaphragm 5 gradually decreases along the flow direction of water. Therefore, in Embodiment 2, by adjusting the position of the constraint plate 901 in each constraint component 9, the pressure wave energy absorbed by each buffer part of diaphragm 5 is kept approximately the same, that is, the buffering performance of diaphragm 5 is maximized, thereby significantly extending the service life of diaphragm 5.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A buffer, comprising a lower housing (1) and an upper housing (2), wherein the open end of the lower housing (1) is connected to the open end of the upper housing (2) and a diaphragm (5) is provided at the connection point between the two, characterized in that, The lower housing (1) is provided with a lower isolation plate (8), and at least two lower isolation plates (8) are provided along the length direction of the lower housing (1). The upper housing (2) is provided with an upper isolation plate (6), and at least two upper isolation plates (6) are provided along the length direction of the upper housing (2). The number of lower isolation plates (8) is the same as the number of upper isolation plates (6). The upper isolation plate (6) and the corresponding lower isolation plate (8) are located in the same plane, and the two sides of the diaphragm (5) are connected to the upper isolation plate (6) and the lower isolation plate (8) respectively. The upper isolation plate (6) is provided with a connecting hole (7).

2. A bumper as claimed in claim 1, wherein When the upper shell (2) and the lower shell (1) are connected, the distance between the upper isolation plate (6) and the lower isolation plate (8) is less than the thickness of the diaphragm (5).

3. A bumper as defined in claim 1, wherein The upper shell (2) has nozzles on both sides along its length. The two nozzles are an inlet nozzle (3) for liquid inflow and an outlet nozzle (4) for liquid outflow.

4. A damper according to claim 1 or 3, characterised in that The lower partition plate (8) divides the inner cavity of the lower housing (1) into several chambers, each of which is provided with a constraint component (9). The constraint component (9) is used to constrain the bulging size of the diaphragm (5) during buffering.

5. A bumper as claimed in claim 4, wherein The constraint assembly (9) includes a constraint plate (901) that is slidably disposed in the cavity of the lower housing (1) along the extension direction of the inner cavity of the lower housing (1) and a telescopic member for adjusting the position of the constraint plate (901) in the cavity of the lower housing (1).

6. A bumper as claimed in claim 5, wherein The telescopic component includes a threaded shaft (902), the axis of which is parallel to the inner cavity extension direction of the lower housing (1). One end of the threaded shaft (902) is rotatably connected to the constraint plate (901), and the other end of the threaded shaft (902) extends out of the lower housing (1). The closed end of the lower housing (1) is provided with a threaded hole, and the threaded shaft (902) passes through the threaded hole and the two form a threaded connection.

7. A buffer according to claim 6, characterized in that, A connecting groove (903) is provided on the side of the constraint plate (901) away from the diaphragm (5), and the threaded shaft (902) is connected to the connecting groove (903) through a bearing (904).

8. A bumper as defined in claim 6, wherein A knob (905) is provided at the end of the threaded shaft (902) that extends out of the lower housing (1).

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