CN207514481U - A kind of high temperature pulsation damper of regime flow - Google Patents

Abstract

The utility model discloses a high-temperature pulsation damper with stable flow, which comprises a spherical shell, a ventilation pipe, a ventilation plug, a flow limiting pipe, an inlet flange and an outlet flange, wherein one end of the ventilation pipe communicates with the upper end of the spherical casing , the other end of the vent pipe is detachably installed with a vent plug; one end of the restrictor tube extends into the spherical shell, the diameter of the middle part of the flow channel in the restrictor tube is smaller than the diameter of the flow channel of the inlet flange and the outlet flange, and the flow in the restrictor tube The two ends of the middle part of the channel are provided with tapered transition sections gradually expanding toward the two ports; the outlet flange is connected with the end of the restrictor tube protruding from the spherical shell; the inlet flange is connected with the spherical shell. The utility model achieves the purpose of reducing the pulsation rate of the pump flow rate by limiting the flow rate at the peak section, and avoids the increase of the flow pulsation at the pump outlet caused by the increase of the internal leakage of the valve group in the pump, thereby causing the increase of the vibration of the pipeline.

Description

A high temperature pulsation damper with stable flow

technical field

The utility model relates to the technical field of dampers, in particular to a high-temperature pulsation damper with stable flow.

Background technique

The pulsation damper is a pressure vessel used to eliminate the pressure pulsation or flow pulsation of the liquid in the pipeline. It can stabilize the fluid pressure and flow, eliminate pipeline vibration, protect downstream instruments and equipment, and increase the volumetric efficiency of the pump.

In the prior art, pulsation dampers are often used in reciprocating pump systems to reduce flow pulsation in pipelines. However, the outlet flow of reciprocating pumps generally fluctuates greatly, the pressure is high, and the temperature of the medium is high. Once abnormal phenomena occur, such as increased internal leakage of the valve group in the pump, the flow pulsation at the pump outlet will increase, resulting in increased pipeline vibration. big.

Therefore, the utility model discloses a high-temperature pulsation damper with stable flow, which can reduce the pulsation rate of the pump flow by limiting the flow in the peak section, and avoid the increase of the flow pulsation at the pump outlet caused by the increase of internal leakage of the valve group in the pump. This results in an increase in pipeline vibration.

Utility model content

Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is: to avoid the flow pulsation increasing with the increase of the flow rate, and to reduce the vibration of the pipeline.

In order to solve the problems of the technologies described above, the utility model adopts the following technical solutions:

A high-temperature pulsation damper with stable flow, including a spherical shell, a vent pipe, a vent plug, a restrictor pipe, an inlet flange and an outlet flange, wherein:

One end of the ventilation pipe communicates with the upper end of the spherical housing, and the ventilation plug is detachably installed on the other end of the ventilation pipe;

One end of the restrictor tube extends into the spherical housing, the diameter of the middle part of the flow channel in the restrictor tube is smaller than the diameter of the flow channel of the inlet flange and the outlet flange, and the diameter of the middle part of the flow channel in the restrictor tube The two ends are provided with a tapered transition section gradually expanding toward the two ports;

The outlet flange is connected to one end of the restrictor tube protruding from the spherical housing;

The inlet flange communicates with the spherical housing.

Preferably, the ventilation pipe is threadedly connected to the ventilation plug, and a ventilation step surface opposite to the end surface of the ventilation plug is provided in the ventilation pipe, and a ventilation step surface is provided between the ventilation step surface and the ventilation plug. There are breather gaskets.

Preferably, the high temperature pulsation damper with stable flow also includes a blowdown pipe and a blowdown plug;

One end of the sewage discharge pipe communicates with the lower end of the spherical housing, and a sewage discharge plug is detachably installed on the other end of the sewage discharge pipe.

Preferably, the sewage discharge pipe is threadedly connected to the sewage discharge plug, and a sewage discharge step surface opposite to the end surface of the sewage discharge plug is provided in the sewage discharge pipe, and a sewage discharge step surface and the sewage discharge plug are provided between With blowdown gasket.

Preferably, a fixed section of a preset length is provided at the portion of the restrictor tube protruding from the spherical housing, and a fixed tube of a preset length is provided between the inlet flange and the spherical housing.

Preferably, the taper of the tapered transition section is 10°-20°.

In summary, the utility model discloses a high-temperature pulsation damper with stable flow rate, which includes a spherical shell, a vent pipe, a vent plug, a restrictor pipe, an inlet flange and an outlet flange, wherein: one end of the vent pipe is connected to The upper end of the spherical shell is connected, and the other end of the vent pipe is detachably installed with a vent plug; one end of the restrictor tube extends into the spherical shell, and the diameter of the middle part of the flow channel in the restrictor tube is smaller than the diameter of the flow channel of the inlet flange and the outlet flange. The two ends of the middle part of the flow channel in the restrictor tube are provided with a tapered transition section gradually expanding to the two ports; the outlet flange is connected with the end of the restrictor tube protruding from the spherical shell; the inlet flange is connected with the spherical shell. The utility model achieves the purpose of reducing the pulsation rate of the pump flow rate by limiting the flow rate at the peak section, and avoids the increase of the flow pulsation at the pump outlet caused by the increase of the internal leakage of the valve group in the pump, thereby causing the increase of the vibration of the pipeline.

Description of drawings

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a structural schematic diagram of a high-temperature pulsation damper with stable flow disclosed by the utility model;

Fig. 2 is a partial enlarged view of the ventilation pipe of a high-temperature pulsation damper with a stable flow rate disclosed by the utility model;

Fig. 3 is a partially enlarged view of the blowdown pipe of a high-temperature pulsation damper with stable flow rate disclosed by the utility model.

The corresponding relationship of the labels in the drawings is: outlet flange 1, restrictor tube 2, spherical shell 3, vent tube 4, vent plug 5, fixed tube 6, inlet flange 7, middle part of the flow channel in the restrictor tube 22, Tapered transition section 21, blowdown pipe 8, blowdown plug 9, ventilation seal ring 10, blowdown seal ring 11.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A high-temperature pulsation damper with stable flow, including a spherical shell 3, a vent pipe 4, a vent plug 5, a restrictor pipe 2, an inlet flange 7 and an outlet flange 1, wherein:

One end of the ventilation pipe 4 communicates with the upper end of the spherical housing 3, and the other end of the ventilation pipe 4 is detachably installed with a ventilation plug 5;

One end of the restrictor tube 2 extends into the spherical housing 3, the diameter of the middle part 22 of the flow channel in the restrictor tube is smaller than the diameter of the flow channel of the inlet flange 7 and the outlet flange 1, and the two ends of the middle part 22 of the flow channel in the restrictor tube are provided with A tapered transition section 21 gradually expanding towards the two ports;

The outlet flange 1 is connected with the end of the restrictor tube 2 protruding from the spherical housing 3;

The inlet flange 7 communicates with the spherical housing 3 .

The pulsation damper disclosed by the utility model is suitable for high temperature environment, therefore, the metal spherical shell 3 is directly filled with compressed gas, and the pressure or flow pulsation of the liquid is absorbed by the contraction and expansion of the compressed gas. When there is an abnormal situation in the reciprocating pump system, such as an increase in the internal leakage of the valve group in the pump, it will cause the flow pulsation at the pump outlet to increase and cause the pipeline vibration to increase. The utility model adds a current limiting tube 2, the diameter of the current limiting tube 2 is smaller than the diameter of the flange, so the current limiting tube 2 can reduce the speed of the liquid flowing from the spherical shell 3 into its flow channel, and limit the peak section The flow rate is used to reduce the pulsation of the pump flow, thereby reducing the vibration of the pipeline. In addition, due to the tapered transition section, the liquid can be smoothly passed when entering the restrictor tube, and no vibration will be generated due to the reduction of the tube diameter.

In the present invention, the spherical shell 3 can be formed by welding two hemispherical shells.

As shown in Figure 2, during specific implementation, the vent pipe 4 is threadedly connected with the vent plug 5, and the vent pipe 4 is provided with a vent step surface opposite to the end face of the vent plug 5, between the vent step surface and the vent plug 5 A vent sealing gasket 10 is provided.

In order to facilitate the disassembly of the ventilation plug 5, the ventilation plug 5 and the ventilation pipe 4 are threaded, and a ventilation sealing gasket 10 is arranged at the connection between the ventilation plug 5 and the ventilation pipe 4, thereby improving the airtightness of the pulsation damper.

During specific implementation, the high-temperature pulsation damper with stable flow also includes a sewage pipe 8 and a sewage plug 9;

One end of the sewage pipe 8 communicates with the lower end of the spherical housing 3 , and a sewage plug 9 is detachably installed on the other end of the sewage pipe 8 .

There may be some impurities in the liquid flowing through the pulsation damper. With the accumulation of time, the impurities in the spherical shell 3 of the pulsation damper will increase day by day, which will increase the wear on the inner wall of the spherical shell 3 and affect the flow of the liquid. The flow in the spherical housing 3 reduces the working effect of the pulsation damper. Therefore, a sewage discharge pipe 8 is arranged at the lower end of the spherical housing 3. When the pulsation damper stops working, the sewage discharge pipe 8 is opened to discharge impurities in the spherical housing 3, which can Extend the service life of the pulsation damper and maintain the working effect of the pulsation damper.

As shown in Figure 3, during specific implementation, the sewage discharge pipe 8 is threadedly connected with the sewage discharge plug 9, and the sewage discharge pipe 8 is provided with a sewage discharge step surface opposite to the end face of the sewage discharge plug 9, between the sewage discharge step surface and the sewage discharge plug 9 A sewage sealing gasket 11 is provided.

In order to facilitate the disassembly of the sewage plug 9, the sewage plug 9 and the sewage pipe 8 are threaded, and a sewage sealing gasket 11 is arranged at the connection between the sewage plug 9 and the sewage pipe 8, thereby improving the air tightness of the pulsation damper.

During specific implementation, the portion of the restrictor tube 2 protruding from the spherical housing 3 is provided with a fixed section of a preset length, and a fixed tube 6 of a preset length is provided between the inlet flange 7 and the spherical housing 3 .

In the existing pulsation damper, the two ends of the housing are directly connected to the standard flange. However, the connection section of the standard flange is short, and the pulsation damper cannot be fixed by other devices, and the pulsation damper is suspended during the working process. , when the vibration is large, the safety is poor. The utility model is provided with a fixed section and a fixed pipe 6 with a preset length, and a skirt or pipe clamp connected with the fixed section and the fixed pipe 6 can be provided to reinforce the pulsation damper, thereby improving safety performance.

During specific implementation, the taper of the tapered transition section 21 is 10°-20°.

In order to reduce the impact formed when the liquid enters the restrictor tube 2 and ensure that the length of the restrictor tube 2 is appropriate, the taper of the tapered transition section 21 is 10°-20°.

During specific implementation, the first discharge valve can be set on the vent pipe 4, and the first discharge threshold of the first discharge valve can be set. When the internal pressure of the spherical housing 3 is too large than the first discharge threshold, the spherical housing The gas in the body 3 can be discharged through the first discharge valve, which avoids safety accidents and improves the safety of the pulsation damper.

During specific implementation, the second discharge valve can also be set on the sewage pipe 8, and the second discharge threshold of the second discharge valve is set, the second discharge threshold is greater than the first discharge threshold, when the first discharge valve After the pressure in the spherical housing 3 continues to rise after the discharge is performed and is greater than the second discharge threshold, the second discharge valve starts to discharge, which further improves the safety of the pulsation damper.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described with reference to the preferred embodiment of the utility model, those of ordinary skill in the art should understand that, Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (6)

1. A high-temperature pulsation damper with a stable flow rate, characterized in that it includes a spherical shell, a vent pipe, a vent plug, a restrictor pipe, an inlet flange and an outlet flange, wherein: One end of the ventilation pipe communicates with the upper end of the spherical housing, and the ventilation plug is detachably installed on the other end of the ventilation pipe; One end of the restrictor tube extends into the spherical housing, the diameter of the middle part of the flow channel in the restrictor tube is smaller than the diameter of the flow channel of the inlet flange and the outlet flange, and the diameter of the middle part of the flow channel in the restrictor tube The two ends are provided with a tapered transition section gradually expanding toward the two ports; The outlet flange is connected to one end of the restrictor tube protruding from the spherical housing; The inlet flange communicates with the spherical housing. 2. The high temperature pulsation damper with stable flow rate according to claim 1, characterized in that, the vent pipe is threadedly connected with the vent plug, and the vent pipe is provided with a valve opposite to the end face of the vent plug. A ventilation step surface, a ventilation sealing gasket is arranged between the ventilation step surface and the ventilation plug. 3. The high-temperature pulsation damper with stable flow rate according to claim 1, characterized in that, the high-temperature pulsation damper with stable flow rate also includes a sewage pipe and a sewage plug; One end of the sewage discharge pipe communicates with the lower end of the spherical housing, and a sewage discharge plug is detachably installed on the other end of the sewage discharge pipe. 4. The high-temperature pulsation damper with stable flow rate according to claim 3, characterized in that, the sewage pipe is threadedly connected to the sewage plug, and the sewage pipe is provided with a valve opposite to the end face of the sewage plug. A sewage discharge step surface, a sewage discharge sealing gasket is arranged between the sewage discharge step surface and the sewage discharge plug. 5. The high-temperature pulsation damper with stable flow rate according to claim 1, characterized in that, the part of the restrictor tube protruding from the spherical shell is provided with a fixed section of preset length, and the inlet flange and A fixed pipe with a preset length is arranged between the spherical shells. 6. The high temperature pulsation damper with stable flow rate according to claim 1, characterized in that, the taper of the tapered transition section is 10°~20°.