CN211203284U

CN211203284U - Pulsation damper

Info

Publication number: CN211203284U
Application number: CN201920555986.7U
Authority: CN
Inventors: 彭建林; 王精华; 刘宗辉; 黄江俊
Original assignee: Shenzhen Motil Technology Co ltd
Current assignee: Shenzhen Motil Technology Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-08-07
Anticipated expiration: 2029-04-23

Abstract

The utility model is suitable for a fluid pipeline carries the field, provides a pulsation damper, including the attenuator body that has the cavity, be provided with the inlet in the one end of attenuator body, the other end of attenuator sets up the liquid outlet, be provided with the buffer hose that is used for supplying the circulation of pulsation liquid in the cavity, the buffer hose with be formed with the air chamber between the cavity inner wall, the air chamber is connected with and is used for the basis the inlet pressure differential adjusts between the liquid outlet the pressure adjustment assembly of the inside atmospheric pressure of air chamber. The utility model provides a pulsation damper, but its pulsation of automatic smoothing pulsation liquid reduces the pulse, makes pulsation liquid steady flow, protects low reaches instrument and equipment.

Description

Pulsation damper

Technical Field

The utility model belongs to the fluid pipeline carries the field, especially relates to a pulsation damper.

Background

During the transport of the liquid, the liquid is often pulsed for various reasons. One of the reasons is the pulsation caused by the pump delivery principle when the peristaltic pump, gear pump, etc. deliver liquid, and the other is that when the external vibration causes the pipeline vibration, the vibrating pipeline will cause the liquid in the pipeline to pulsate. The pulsations generated by the above causes will all have an influence on the operation of the meters and equipment downstream of the liquid. When instruments and equipment and the like downstream of the liquid need stable flow and pressure, the pulsation of the liquid needs to be eliminated through a pulsation damper. The principle of the pulsation damper is as follows: absorbing energy as the pressure or flow value increases and releasing energy as the pressure or flow value decreases and reducing pulsation by flattening the peaks and valleys. In the existing pulsation damper, the air pressure of the pulsation damper needs to be artificially adjusted according to the pulse of the pulsating liquid to reduce the pulse and smooth the pulsation, but in actual operation, the pressure of the pulsating liquid changes in the flowing process, so that the pulsation damper cannot be adjusted at any time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of above-mentioned technical problem at least, provide a pulsation damper, but its pulsation of automatic smooth pulsation liquid reduces the pulse, makes pulsation liquid stable flow, protection low reaches instrument and equipment.

The technical scheme of the utility model is that: the utility model provides a pulsation damper, is including the attenuator body that has the cavity, be provided with the inlet in the one end of attenuator body, the other end of attenuator sets up the liquid outlet, be provided with the buffer hose who is used for supplying the circulation of pulsation liquid in the cavity, buffer hose with be formed with the air chamber between the cavity inner wall, the air chamber is connected with and is used for the basis the inlet pressure difference adjusts between the liquid outlet the pressure regulating assembly of the inside atmospheric pressure of air chamber.

Optionally, the pressure regulating assembly includes two pressure sensors disposed at two ends of the damper body and respectively used for monitoring pressure values of the liquid inlet and the liquid outlet, a pressure regulating valve connected with a compressed gas source and used for regulating the pressure of the compressed gas, and a control module for receiving the two pressure values monitored by the pressure sensors and controlling the pressure regulating valve according to a pressure difference, the air chamber is provided with an air inlet and an air outlet connected with the pressure regulating valve, the two pressure sensors are connected with the control module, and the control module is electrically connected with the pressure regulating valve.

Optionally, the pressure regulating valve is an electric proportional valve or an electric pressure regulating valve.

Optionally, the gas chamber is provided with a pressure gauge for monitoring changes in gas pressure within the gas chamber.

Optionally, the bump out hose is disposed coaxially with the damper body.

Optionally, one end of the buffer hose is communicated with the liquid inlet, and the other end of the buffer hose is communicated with the liquid outlet.

Optionally, the damping hose is made of a flexible material that is stretchable.

Optionally, the control module is connected with an alarm module.

The utility model provides a pulsation damper, when the pulsation liquid flows through the buffering hose, can cause the extrusion to the pipe wall of buffering hose, lead to buffering hose to take place deformation, adopt pressure sensor monitoring damper body inlet and liquid outlet pulsation liquid's pressure value, and feed back the pressure value to control system, calculate the pressure difference value by control system, need not artificial control, come automatic control air-vent valve according to this pressure difference value and adjust letting in the pressure of air chamber internal compression gas, and then reach the purpose of adjusting air chamber atmospheric pressure, the expansion of effectual suppression buffering hose, smooth pulsation, make pulsation liquid steady flow, protection low reaches equipment and instrument.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a pulsation damper according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

fig. 3 is a schematic diagram of an operation of a pulsation damper according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed, installed, connected, or indirectly disposed and connected through intervening components and intervening structures.

In addition, in the embodiments of the present invention, if there are orientations or positional relationships indicated by "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., based on the orientations or positional relationships shown in the drawings or the conventional placement state or use state, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated structure, feature, device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and various combinations of features/embodiments are not separately described in order to avoid unnecessary repetition in the present disclosure.

As shown in fig. 1 and 2, the embodiment of the utility model provides a pair of pulsation damper, a liquid pressure pulsation or flow pulsation in the pipeline is used for eliminating, fluid flow and pressure are stabilized, including the attenuator body 1 that has the cavity, be provided with inlet 11 in the one end of attenuator body 1, the other end of attenuator sets up liquid outlet 12, be provided with the buffer hose 2 that is used for supplying the circulation of pulsation liquid in the cavity, buffer hose 2's one end and inlet 11 sealing connection, the other end and liquid outlet 12 sealing connection, and buffer hose 2 and cavity clearance fit, it has air chamber 3 to make between buffer hose 2's surface and the cavity inner wall, air chamber 3 is connected with and is used for according to inlet 11, the pressure differential value adjusts the pressure adjusting part of the inside atmospheric pressure of air chamber 3 between liquid outlet 12. Referring to fig. 3, when the pulsating liquid flows through the buffer hose 2, the impact is applied to the buffer hose 2, so that the buffer hose 2 expands outwards, the pressure inside the air chamber 3 is automatically adjusted by the pressure adjusting assembly according to the actual flow condition of the pulsating liquid, the pressure in the air chamber 3 changes along with the change of the pressure of the pulsating liquid, the expansion of the buffer hose 2 is effectively inhibited, the pulsation is smooth, the pulsating liquid stably flows in the pipeline, downstream instruments and equipment are protected, and the use reliability is high.

Alternatively, as shown in fig. 1, the pressure adjusting assembly includes two pressure sensors 51 disposed at two ends of the damper body 1 and respectively used for monitoring pressure values of the liquid inlet 11 and the liquid outlet 12, a pressure regulating valve 52 connected to a compressed gas source (not shown) for regulating a pressure of the compressed gas, and a control module 53 for receiving the pressure values monitored by the two pressure sensors 51 and controlling the pressure regulating valve 52 according to a pressure difference, the air chamber 3 is provided with an inlet and an outlet 4 connected to the pressure regulating valve 52, the compressed gas can be filled into the air chamber 2 through the inlet and outlet 4, or the gas in the air chamber 2 can be exhausted through the inlet and outlet 4 to regulate the pressure in the air chamber 2, the two pressure sensors 51 are connected to the control module 53, and the control module 53 is electrically connected to the. The specific operation is as follows: when the pulsating liquid flows through the buffer hose 2, the pulsating liquid can impact the buffer hose 2, so that the buffer hose 2 expands outwards, the pressure sensor 51 at the two ends of the damper body 1 monitors the pulsating liquid to a pressure value, and feeds the pressure value back to the control module 53, the control module 53 receives and calculates the pressure difference between the two values, and then controls the pressure regulating valve 52 to automatically regulate the pressure of the compressed gas filled in the air chamber 2 according to the pressure difference, so that the air pressure of the air chamber 2 is increased, or the air in the air chamber 2 is discharged, so that the air pressure of the air chamber 2 is reduced, so that the air pressure in the air chamber 3 can change along with the change of the pulsating liquid pulse, the expansion of the buffer hose 2 is effectively inhibited, and the pulsation.

Alternatively, the pressure regulating valve 52 may be an electric proportional valve or an electric pressure regulating valve, which is responsive to accurately regulate the pressure of the compressed gas in response to a control signal from the control module 53.

Optionally, the air chamber 3 may be provided with a pressure gauge 6 for monitoring the change of the air pressure in the air chamber 3, so that the user can intuitively know the condition of the air pressure inside the air chamber 3.

Alternatively, as shown in fig. 2, the damping hose 2 is coaxially disposed with the damper body 1, so that the distances from the outer surface of the damping hose 2 to the inner wall of the cavity are equal, the surface of the damping hose 2 is uniformly pressurized, and the pressures applied to the outer surface of the damping hose 2 are the same. The cavity can be cylindrical, or, the cavity can be rectangle etc. only need to make 1 cover of attenuator body establish outside buffering hose 2 to ensure that buffering hose 2 is located the cavity inside can, from the cross-section of pulsation damper, by interior toward being buffering hose 2, air chamber 3 and attenuator body 1 outward in proper order.

Optionally, one end of the buffer hose 2 is communicated with the liquid inlet 11, the other end of the buffer hose 2 is communicated with the liquid outlet 12, and the buffer hose 2 is hermetically arranged with the liquid inlet 11 and the liquid outlet 12, namely, the pulsating liquid flows into the buffer hose 2 through the liquid inlet 11, and flows out from the liquid outlet 12 after the pulsation is absorbed by the combined action of the buffer hose 2 and the pressure of the air chamber 3, so that the flowing stability of the pulsating liquid is ensured.

Optionally, the flexible buffer tube 2 is made of flexible material, such as silicone rubber or polytetrafluoroethylene, which has good flexibility and can expand or contract with different impacts of the pulsating liquid to inhibit the pulsating liquid from flowing unstably.

Optionally, the damper body 1 can be made of stainless steel, and the damper body 1 is of an integrally formed structure, so that good air tightness and high structural strength of the damper body 1 are ensured.

Optionally, the control system is connected with an alarm module, and when the pressure difference value of the pressure values of the pulsating liquid at the liquid inlet and the liquid outlet is too large, the control system can control the alarm module to give an alarm to remind a user to adjust the flow of the pump.

The embodiment of the utility model provides a pulsation damper, when pulsation liquid flows through buffering hose 2, can cause the extrusion to the pipe wall of buffering hose 2, lead to buffering hose 2 to take place deformation, adopt the pressure value of 1 inlet 11 of pressure sensor 51 monitoring damper body and 12 pulsation liquid of liquid outlet, and feed back the pressure value to control system, calculate the pressure difference value by control system, need not artificial control, come automatic control air-vent valve 52 to adjust the pressure of letting in air chamber 3 internal compression gas according to this pressure difference value, and then reach the purpose of adjusting air chamber 3 atmospheric pressure, effectual suppression buffering hose 2 expands, smooth pulsation, make pulsation liquid steady flow, protection low reaches equipment and instrument.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. The utility model provides a pulsation damper, is including the attenuator body that has the cavity, its characterized in that, be provided with the inlet in the one end of attenuator body, the other end of attenuator sets up the liquid outlet, be provided with the buffer hose who is used for supplying the circulation of pulsation liquid in the cavity, buffer hose with be formed with the air chamber between the cavity inner wall, the air chamber is connected with and is used for the basis the inlet pressure difference adjusts between the liquid outlet the pressure regulating assembly of the inside atmospheric pressure of air chamber.

2. The pulsation damper according to claim 1, wherein the pressure regulating assembly comprises two pressure sensors disposed at two ends of the damper body and configured to monitor pressure values of the liquid inlet and the liquid outlet, respectively, a pressure regulating valve connected to a compressed gas source for regulating a pressure of the compressed gas, and a control module configured to receive the pressure values monitored by the two pressure sensors and control the pressure regulating valve according to a pressure difference, the air chamber is provided with an inlet and an outlet connected to the pressure regulating valve, the two pressure sensors are connected to the control module, and the control module is electrically connected to the pressure regulating valve.

3. A pulsation damper as claimed in claim 2, characterized in that said pressure regulating valve is an electric proportional valve or an electric pressure regulating valve.

4. A pulsation damper as claimed in claim 2, wherein said air chamber is provided with a pressure gauge for monitoring a change in the air pressure in said air chamber.

5. A pulsation damper as claimed in claim 1, wherein said damping hose is provided coaxially with said damper body.

6. A pulsation damper as claimed in any one of claims 1 to 5, wherein one end of said damping hose is in communication with said liquid inlet port, and the other end of said damping hose is in communication with said liquid outlet port.

7. A pulsation damper as claimed in any one of claims 1 to 5, characterized in that said damping hose is made of a flexible material which is stretchable.

8. A pulsation damper as claimed in any one of claims 2 to 4, characterized in that an alarm module is connected to the control module.