CN213065086U - Pulse damper for fluid transmission and fluid transmission system - Google Patents

Abstract

The utility model relates to a pulse damper (3) and fluid transmission system for fluid transmission, pulse damper (3) for fluid transmission is including inclosed rigid shell, elasticity bag (13), fluid inlet and fluid outlet, be formed with holding chamber (18) in the rigid shell, elasticity bag (13) set up in holding chamber (18), fluid inlet and fluid outlet set up on the rigid shell, fluid inlet and fluid outlet with cushion chamber (19) of elasticity bag (13) communicate, and the fluid of transmission can pass through in the fluid inlet flows into pulse damper (3), and pass through the fluid outlet flows out from pulse damper (3). The utility model discloses a pulse damper can real-time supervision fluid transmission pipeline operation conditions and in time handle unusual situation, can effectively reduce fluid transmission flow and velocity of flow pulsation, realizes contactless fluid pressure monitoring.

Description

Pulse damper for fluid transmission and fluid transmission system

Technical Field

The utility model belongs to the technical field of fluid transmission, concretely relates to a pulse damper and fluid transmission system for fluid transmission.

Background

The fluid transfer pump is the core power component of the fluid transfer system, and the power of the pump body itself is usually provided by an electric motor. An open-loop system is adopted between the motor controller and the motor, the motor controller controls the motor to operate in a single direction, and the motor controller cannot acquire the actual operating states of the motor and the pump body and the operating conditions of the transmission pipeline.

Taking a typical peristaltic pump for fluid transfer as an example, the peristaltic pump may be operated in situations where the pump head accidentally causes the rollers to stop, the tubing to jam, the hose to accidentally move, and the tubing to break and leak fluid. For example, the leakage of fluid may cause corrosion and damage of working parts, the abnormal bending of the hose during accidental movement may cause the clogging of the pipeline in the fluid transfer pump, and the large foreign matters in the liquid transferred by the pipeline. Once the above situation occurs, the damage of the driving module inside the peristaltic pump and the failure of the transmission system may also be caused, and at this time, if the user cannot obtain the fault information in time, the interruption of the actual production or experiment and the liquid pollution may be further caused, resulting in more serious consequences.

Meanwhile, in the existing fluid transfer pumps, especially plunger pumps, diaphragm pumps, peristaltic pumps and the like, instantaneous flow pulsation of different degrees exists in the pipeline in the process of outputting fluid, the speed of the fluid output at different moments is not uniform, the flow stability of the outlet end of the fluid transfer system is affected, and the liquid transfer precision is reduced.

Therefore, how to reduce or even eliminate the flow pulsation to the maximum degree becomes a common problem in the field of fluid delivery. In order to reduce fluid pulsations in the fluid transfer pump to maintain outlet end flow stability, it is conventional practice to install a pulse dampener in the piping of the flow transfer system. However, the existing pulse damper generally has the problems that the volume is large, and the internal space of the pulse damper needs to be filled before the pulse damper can be normally used; when the pulse damper is stopped, fluid in the pulse damper can be slowly discharged to cause unnecessary waste, and when the pulse damper is restarted, the pulse damper needs to be filled again, so that the efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the pulse damper inner space in the running state and the pipeline can not be obtained in real time in the running process of the fluid transmission pump, the use is inconvenient, the waste exists, the utility model provides a pulse damper and fluid transmission system for fluid transmission.

The pulse damper for fluid transmission comprises a closed rigid shell, an elastic bag, a fluid inlet and a fluid outlet, wherein a containing cavity is formed in the rigid shell, the elastic bag is arranged in the containing cavity, the fluid inlet and the fluid outlet are arranged on the rigid shell, the fluid inlet and the fluid outlet are communicated with a buffer cavity of the elastic bag, and transmitted fluid can flow into the pulse damper through the fluid inlet and flow out of the pulse damper through the fluid outlet.

In one embodiment, the rigid shell comprises a shell main body and a sealing cover, the shell main body is in a columnar shape, an opening is formed in one end of the shell main body, and the sealing cover is hermetically and fixedly installed on the opening of the shell main body.

In one embodiment, the housing main body is cylindrical, the lower end of the housing main body is open to form an opening, and an annular stopping part is arranged on the inner wall of the lower end of the housing main body; the sealing cover is embedded into the opening of the shell main body and is pressed on the annular stopping portion through the pressing block, so that the edge of the sealing cover is abutted against the annular stopping portion to form a sealing structure.

In one embodiment, the sealing cover is disc-shaped.

In one embodiment, the pressing block is in interference fit with the inner wall of the opening of the shell body or screwed at the opening of the shell body through a threaded structure.

In one embodiment, the fluid inlet and the fluid outlet are disposed on a sealing cover, the opening of the elastic bladder is sealingly disposed on the sealing cover, and the fluid inlet and the fluid outlet are in direct communication with the buffer chamber of the elastic bladder.

In one embodiment, the pulse damper further comprises an input pipe plugged from the outside of the sealing cover to the fluid inlet and an output pipe plugged from the outside of the sealing cover to the fluid outlet.

In one embodiment, the pulse damper further comprises a pressure detection device, wherein the pressure detection device is communicated into the accommodating cavity and can monitor the pressure in the accommodating cavity between the elastic bag and the rigid shell.

In one embodiment, the rigid shell is further provided with a pressure regulating device for regulating the pressure in the accommodating cavity between the elastic bag and the rigid shell.

In one embodiment, the pressure regulating device is a pressure regulating plug rod, and the pressure regulating plug rod comprises a plug head and a plug rod; the plug is arranged in the columnar rigid shell and is in slidable sealing connection with the side wall of the accommodating cavity of the rigid shell; one end of the plug rod is connected with the plug head, and the other end of the plug rod extends out of the rigid shell; a sealing structure is arranged on the part of the rigid shell, which is contacted with the plug rod; alternatively, the first and second electrodes may be,

the pressure regulating device is a pressure regulating valve.

The fluid delivery system comprises a fluid delivery pump and a pulse damper as described above, the output of the fluid delivery pump being in communication with the fluid inlet of the pulse damper.

In one embodiment, the fluid transfer system further comprises a controller, the pulse damper comprises a pressure detection device, the controller is electrically connected with the pressure detection device and the fluid transfer pump respectively, the controller obtains a pressure value detected by the pressure detection device, when the detected pressure value is within a preset range, the fluid transfer system is determined to reach a working state, and the fluid transfer pump is adjusted to operate according to set parameters.

In one embodiment, the fluid transmission system further comprises a switch, the switch is arranged on one side of the output pipeline of the pulse damper, and the controller is electrically connected with the switch and can control the on-off state of the switch so as to control the on-off state of the fluid output of the pulse damper.

In one embodiment, the pulse damper further comprises a pressure regulating device, the controller is electrically connected with the pressure regulating device through an actuator, and/or the fluid transfer pump is preferably a peristaltic pump.

The utility model has the advantages that: the embodiment of the utility model provides a pulse damper and fluid transmission system for fluid transmission, through the elasticity of elasticity bag and the double buffer effect of holding intracavity leakproofness gas pressure, can absorb the crest trough of fluid flow and velocity fluctuation, can reduce the output flow and the velocity pulsation of fluid transfer pump by a wide margin; the transmitted fluid is not in direct contact with the pressure detection device, the defect that the existing pipeline pressure detection device is in direct contact with the fluid is overcome, the use process is safe and sanitary, and the device is particularly suitable for the fields with high requirements on sanitary grade such as food, medicines, reagents and the like and the application occasions of transmitting corrosive fluid; the utility model discloses pulse damper volume is small and exquisite, and the consumptive material replacement cost is low, is applicable to multiple fluid types such as acid, alkali, medicament.

In addition, the fluid transmission system provided by the embodiment of the utility model realizes the real-time monitoring of the operation condition of the fluid transmission pump body and the transmission pipeline through the cooperation of the fluid transmission pump, the controller, the pulse damper and the switch, and can send out an alarm in time and automatically process abnormal conditions; when the fluid transmission work is finished or the system stops running, the switch is automatically closed, and fluid loss in the damper is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a pulse damper for fluid transmission according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of another pulse damper for fluid transmission according to the first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a fluid transfer system according to a third embodiment of the present invention;

fig. 4 is a control logic block diagram of a fluid delivery system according to a third embodiment of the present invention;

fig. 5a-5e are real-time flow comparison diagrams of a flow transmission system having a real-time flow of the flow transmission system of an embodiment of the present invention and a comparison group (without a pulse damper of an embodiment of the present invention).

Wherein the reference numerals are specified as follows: the pressure-regulating device comprises a fluid transmission pump 1, a pressure detection device 2, a pulse damper 3, a first communication line 4, a second communication line 5, a switch 6, an input hose 7, an output hose 8, a controller 9, a third communication line 10, a shell main body 11, a sealing cover 12, an elastic bag 13, an input pipeline 14, an output pipeline 15, a pressing block 16, a mounting frame 17, a containing cavity 18, a buffer cavity 19 and a pressure regulating device 20

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the drawings and the following embodiments.

The utility model discloses a first embodiment provides a pulse damper 3 for fluid transmission, as shown in fig. 1, pulse damper 3 includes inclosed rigid shell, elasticity bag 13, fluid inlet and fluid outlet, be formed with holding chamber 18 in the rigid shell, elasticity bag 13 sets up in holding chamber 18, fluid inlet and fluid outlet set up on the rigid shell, fluid inlet and fluid outlet with the cushion chamber 19 of elasticity bag 13 intercommunication, the fluid of transmission can pass through fluid inlet flows into pulse damper 3, and passes through fluid outlet flows out from pulse damper 3.

Specifically, as shown in fig. 1, the rigid housing includes a housing main body 11 and a sealing cover 12. The housing body 11 is columnar, and an opening is formed at one end. The sealing cover 12 is hermetically and fixedly mounted on the opening of the housing main body 11. In this embodiment, the housing main body 11 is cylindrical, the lower end of the housing main body is open to form an opening, and an annular stop portion is disposed on the inner wall of the lower end of the housing main body 11; the sealing cover 12 is disc-shaped, and is inserted into the opening of the housing main body 11, and the disc-shaped sealing cover is pressed against the annular stop portion by the pressing block 16, so that the edge of the disc-shaped sealing cover abuts against the annular stop portion to form a sealing structure. The pressing block 16 is in interference fit with the inner wall of the opening of the housing main body 11 or screwed at the opening of the housing main body 11 through a thread structure.

The elastic bag 13 is made of an elastic body material having a certain modulus, the elastic body material is not limited to silicone, rubber, elastic plastic, and the like, and the elastic bag 13 has an opening through which a fluid flows in and out. In this embodiment, the fluid inlet and the fluid outlet are provided on the sealing cover 12, the opening of the elastic bag 13 is sealingly provided on the sealing cover 12, and the fluid inlet and the fluid outlet are directly communicated with the buffer chamber 19 of the elastic bag 13. Thus, the elastic bag 13 is provided on the sealing cover 12 through the open end thereof, so that the elastic bag 13 can be removed from the housing main body 11 with the sealing cover 12, facilitating the maintenance of the equipment. The pulse damper 3 further comprises an inlet line 14 and an outlet line 15, the inlet line 14 being plugged from the outside of the sealing cover 12 to the fluid inlet, the outlet line 15 being plugged from the outside of the sealing cover 12 to the fluid outlet. In operation, fluid from the outside of the pulse damper 3 can enter the pulse damper 3 through the input pipeline 14 and be discharged from the pulse damper 3 through the output pipeline 15, and the fluid only contacts with the input pipeline 14, the output pipeline 15, the elastic bag 13 and the sealing cover 12, so that the possibility of fluid pollution is reduced as much as possible.

The utility model discloses a pulse damper 3 can reduce fluid transmission flow pulsation in fluid transmission process. In the initial working phase, the pumped fluid from the outside of the pulse damper 3 enters the buffer cavity 19 of the elastic bag 13 through the input pipeline 14, the elastic bag 13 is elastically deformed in the accommodating cavity 18 based on the external pumping pressure, the volume is gradually increased, the occupied accommodating cavity 18 is also gradually increased, so that the volume of the accommodating cavity 18 between the elastic bag 13 and the rigid shell is gradually reduced, and the pressure is gradually increased. When the pressures of the inner and outer sides of the sidewall of the elastic bag 13 reach an equilibrium state, the fluid can be normally transferred through the output tube 15. During normal operation, under the action of the fluid transfer pump, when the flow rate of the fluid entering the buffer cavity 19 through the input pipeline 14 is transited from the average value to the fluctuation peak value, the internal pressure of the buffer cavity 19 is increased, the buffer cavity 19 is expanded, the elastic bag 13 is expanded, and the flow rate of the fluid discharged from the buffer cavity 19 through the output pipeline 15 is lower than the flow rate input from the input pipeline 14, but can still be maintained at the average value level; when the flow of fluid entering the buffer chamber 19 through the inlet line 14 transitions from the average value to the trough of the fluctuation, the internal pressure of the buffer chamber 19 decreases, the elastic bag 13 contracts, and the flow of fluid discharged from the buffer chamber 19 through the outlet line 15 is higher than the flow of fluid introduced through the inlet line 14, but is maintained at the average value. Thus, the addition of the pulse damper 3 can reduce the fluid delivery flow pulsation so that the output fluid flow stabilizes at the average flow level.

With a certain cross-sectional area through which the fluid flows, the flow rate is positively correlated with the flow velocity, namely: flow rate is the flow rate cross sectional area. Therefore, the pulse damper 3 of the present invention can simultaneously reduce the pulsation of the fluid transfer flow rate during the fluid transfer process.

In addition, the pulse damper 3 further comprises a pressure detection device 2, wherein the pressure detection device 2 is communicated into the accommodating cavity 18, and can monitor the pressure in the accommodating cavity 18 between the elastic bag 13 and the rigid shell. Preferably, the pulse damper 3 further comprises a mounting frame 17 detachably disposed on the inner wall of the rigid housing, and the detection component of the pressure detection device 2 is disposed on the mounting frame 17. It will be appreciated by those skilled in the art that the sensing component of the pressure sensing device 2 should be located away from the elastomeric bladder 13 so as not to come into contact with the elastomeric bladder. When the fluid transmission pipeline is blocked or damaged, the pressure value detected by the pressure detection device 2 is abnormally fluctuated, so that whether the fluid transmission system normally works can be judged by monitoring the pressure value in the accommodating cavity 18, and an alarm can be sent or displayed based on abnormal working.

The pressure detection device 2 can be a pressure sensor, a distance sensor for monitoring the distance between the mounting frame 17 and the elastic bag 13, a barometer, a scale mark and other devices capable of measuring and/or displaying the pressure/elastic bag deformation amount have a mark display function, the pressure in the accommodating cavity can be displayed through a display device communicated to the outside of the pulse damper 3, when a fluid transmission system only comprises a fluid transmission pump and the pulse damper, a user can judge whether the pressure in the accommodating cavity 18 is in a normal pressure range through the scale, and therefore simple fault monitoring capability is achieved.

More preferably, the rigid shell is further provided with a pressure regulating device 20 for regulating the pressure in the accommodating cavity 18 between the elastic bag 13 and the rigid shell, so that the pressure in the accommodating cavity 18 can be regulated according to the actual use condition.

In one embodiment, as shown in fig. 2, the pressure regulating device 20 is a pressure regulating plug rod, and the pressure regulating plug rod comprises a plug head and a plug rod. The plug is arranged in a columnar rigid shell and is in slidable sealing connection with the side wall of the accommodating cavity 18 of the rigid shell. One end of the plug rod is connected with the plug head, the other end of the plug rod extends out of the rigid shell, and a sealing structure is arranged on the contact part of the rigid shell and the plug rod so as to ensure the air tightness of the accommodating cavity 18. When the pulse damper works, the plug rod pushes and pulls the plug head, the space size of the area of the containing cavity 18 where the elastic bag 13 is located is adjusted, and therefore the pressure 2 in the pulse damper 3 can be adjusted.

In another embodiment, the pressure regulating device 20 is a pressure regulating valve, and the pressure in the pulse damper 3 can be adjusted by opening/closing the pressure regulating valve.

The utility model discloses a fluid transmission system that second embodiment provided, fluid transmission system includes fluid transmission pump and as above pulse damper 3, the output of fluid transmission pump 3 is linked together with pulse damper 3's fluid entry, the preferred peristaltic pump that is of fluid transmission pump.

The related working principle is explained above, and is not described in detail herein.

The third embodiment of the present invention provides a fluid transfer system, as shown in fig. 3 and 4, the fluid transfer system includes a fluid transfer pump 1, a pulse damper 3 and a controller 9 as described in the first embodiment, wherein the pulse damper 3 includes a pressure detection device 2.

The output of the fluid transfer pump 3 communicates with the inlet line 14 of the pulse damper 3, for example via the inlet hose 7. The controller 9 is electrically connected to the pressure detection device 2 and the fluid transfer pump 1, for example, via a first communication line 4 and a third communication line 10, respectively, which are wired lines in fig. 3, although wireless lines may be used.

The utility model discloses fluid transmission system does not have the packing in the start-up stage, elasticity bag 13, and holding chamber 18 between elasticity bag 13 and the rigid shell is in the low pressure state, and controller 9 control fluid transmission pump 1 operates with the pump sending fluid, generally in the short time with the cushion chamber 19 of fluid filling elasticity bag 13 to make the pressure balance of the inside and outside both sides of lateral wall of elasticity bag 13, fluid transmission system reaches operating condition. The pressure detection device 2 monitors the pressure of the accommodating cavity 18 between the elastic bag 13 and the rigid shell, the controller 9 obtains the pressure value detected by the pressure detection device 2, and when the detected pressure value is in a preset range, the fluid transmission system is determined to reach the working state. The controller 9 then adjusts the operating state of the fluid transfer pump 1 to a set parameter output operating state, reducing fluid transfer system outlet latency.

In the shutdown stage of the fluid transmission system, the elastic bag 13 is filled with fluid, the accommodating cavity 18 between the elastic bag 13 and the rigid shell is in a high-pressure state, the switch on the output pipeline of the pulse damper 3 is directly closed, and the operation of the fluid transmission pump 1 is stopped, so that no fluid is discharged from the outlet of the fluid transmission system, and pollution is avoided. After the fluid transfer system is shut down, if the fluid transfer system is needed to be used continuously, the fluid transfer pump 1 can be started and a switch on an output pipeline of the pulse damper 3 is opened, and the fluid transfer system can be used immediately. In addition, after the fluid transfer system is shut down, the fluid transfer pump 1 may be set to reverse, drawing fluid back from the buffer chamber 19 of the elastomeric bladder 13. When the fluid transmission system is stopped and liquid in the fluid transmission system needs to be emptied, the fluid inlet of the fluid transmission system can be disconnected, the fluid transmission pump 1 is started, a switch on the output pipeline of the pulse damper 3 is opened, and the fluid in the fluid transmission system is emptied.

The fluid transmission system also comprises a switch 6, and the switch 6 can be an electromagnetic switch, a switch valve and other devices for realizing pipeline closing. The switch 6 is arranged on one side of the output pipeline 15 of the pulse damper 3 and is used for carrying out opening and closing control on the fluid output of the pulse damper 3. In the present exemplary embodiment, the switch 6 is arranged on an outlet hose 8 which is connected to an outlet line 15 of the pulse damper 3. The controller 9 is electrically connected to the switch 6 via, for example, a second communication line 5, and can control the switching state of the switch 6.

In the fluid transfer system, the switch 6 can be in an open state or a closed state in the starting stage, and the switch 6 is in the closed state, so that the waiting time of the outlet of the fluid transfer system can be shortened.

When the transmission pipeline of the fluid transmission system is blocked or the pipeline is damaged, and other faults occur, the pressure value detected by the pressure detection device 2 exceeds the normal pressure range, the controller 9 gives an alarm, and meanwhile, the controller 9 also suspends the operation of the fluid transmission pump 1, closes the switch 6 and stops outputting the fluid.

In the case where the pulse damper 3 includes the pressure adjusting device 20, the controller 9 is electrically connected to the pressure adjusting device 20 through an actuator, and thus the controller 9 can control the pressure adjusting device 20 to adjust the pressure in the pulse damper 3. For example, the pressure in the pulse damper 3 is adjusted based on the pressure value detected by the pressure detection device 2 to obtain a predetermined range.

To the utility model discloses the fluid transmission system of third embodiment, the utility model discloses the people carries out the contrast test with it and other two sets of fluid transmission system. Wherein, the rigid shell of the comparison group 1 containing the damper adopts a non-closed structure, namely, the accommodating cavity outside the elastic bag is communicated with the external pressure of the rigid shell; comparative group 2 is a fluid delivery system that does not include a pulse dampener; the utility model discloses fluid transmission system is as experimental group, in experimental group, including the pulse damper of three model, the difference only lies in the wall thickness difference of pulse damper's elasticity bag, specifically as follows:

ZN-Q0: the elastic bag of the pulse damper adopts a standard silicon membrane (the thickness is 0.4 mm);

ZN-Q1: the elastic bag of the pulse damper adopts a thickened silica gel film (the thickness is 0.8 mm);

ZN-Q2: the elastic bag of the pulse damper adopts an ultrathin silica gel film (the thickness is 0.2 mm);

comparative group 1: the elastic capsule of the pulse damper adopts an ultrathin silica gel film (the thickness is 0.4mm) and adopts a non-closed rigid shell.

For the test instruments of the experimental group and the comparative groups 1 and 2, except for the difference between the pulse damper and the sealed rigid housing, the same experimental instrument was used, which includes a fluid transfer pump (BT100 driver + YZ15 pump head, wherein the BT100 driver flow range is 0.0001-720mL/min, the YZ15 pump head flow range is 0.0006-420mL/min), and the pump head hose employs 14# silicone tube (wall thickness 1.7mm, inner diameter 1.6mm), pulse damper and flowmeter, and the flowmeter measures the flow rate of the outlet fluid of the fluid transfer system.

The test conditions were: and (3) setting the test rotating speed of a driver motor to be 10 r/min at normal temperature and normal pressure by taking water as a transmission medium, and recording the outlet fluid flow of the fluid transmission system detected by the flowmeter.

The test data table is as follows: (Unit: μ L/min)

The liquid flow-time plot for the fluid delivery system using the ZN-Q0 pulse dampener is shown in fig. 5a, the real-time flow plot for the fluid delivery system using the ZN-Q1 pulse dampener is shown in fig. 5b, the real-time flow plot for the fluid delivery system using the ZN-Q2 pulse dampener is shown in fig. 5c, and the real-time flow plot for the comparative fluid delivery system is shown in fig. 5 d.

And (4) test conclusion: based on the utility model discloses fluid transmission system of third embodiment can real-time supervision fluid transmission pipeline operation to when taking place to block up at the fluid pipeline, because the pressure value that pressure measurement detected surpassed normal pressure scope, controller 9 sends the police dispatch newspaper, pauses the operation of fluid transmission pump 1 simultaneously, and closing switch 6, can in time handle abnormal conditions. Through the calculation, compared with the comparison group 2, the comparison group 1 can eliminate the fluid pulsation of the output end of the fluid transmission system about 50%, and the technical scheme of the utility model can eliminate the fluid pulsation of the output end of the fluid transmission system more than 90%. Based on the above statistics result, the utility model discloses a closed rigidity shell pulse damper is obviously better than non-closed rigidity shell pulse damper to the fluid pulsation's elimination effect, that is to say has produced damping effect in coordination under the two-way cushioning effect of the airtight atmospheric pressure of holding intracavity and elastic bag.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. A pulse damper for fluid transfer, characterized by a closed rigid housing with a receiving chamber (18) formed therein, an elastic bag (13) arranged in the receiving chamber (18), a fluid inlet and a fluid outlet arranged on the rigid housing, which fluid inlet and fluid outlet communicate with a buffer chamber (19) of the elastic bag (13), through which fluid inlet the transferred fluid can flow into the pulse damper (3) and through which fluid outlet the transferred fluid can flow out of the pulse damper (3).

2. The pulse damper according to claim 1, characterized in that the rigid housing comprises a housing body (11) and a sealing cover (12), the housing body (11) is cylindrical, an opening is provided at one end, and the sealing cover (12) is hermetically and fixedly mounted on the opening of the housing body (11).

3. The pulse damper according to claim 2, characterized in that the lower end of the housing main body (11) is opened to form an opening, and an annular stopper is provided on an inner wall of the lower end of the housing main body (11); the sealing cover (12) is embedded into the opening of the shell main body (11) and is pressed on the annular stop part through a pressing block (16), so that the edge of the sealing cover (12) is abutted against the annular stop part to form a sealing structure.

4. A pulse damper according to claim 3, characterized in that the sealing cover (12) is disc-shaped.

5. A pulse damper according to claim 3, characterized in that the compression block (16) is interference fitted with the inner wall of the opening of the housing body (11) or screwed to the opening of the housing body (11) by means of a screw structure.

6. Pulse damper according to one of claims 2 to 5, characterized in that the fluid inlet and the fluid outlet are arranged on a sealing cover (12), the opening of the elastic bladder (13) being sealingly arranged on the sealing cover (12), the fluid inlet and the fluid outlet being in direct communication with the damping chamber (19) of the elastic bladder (13).

7. Pulse damper according to claim 6, characterized in that the pulse damper (3) further comprises an inlet line (14) and an outlet line (15), the inlet line (14) being plugged from the outside of the sealing cover (12) to the fluid inlet, the outlet line (15) being plugged from the outside of the sealing cover (12) to the fluid outlet.

8. Pulse damper according to claim 1, characterised in that the pulse damper (3) further comprises a pressure detection device (2), which pressure detection device (2) is connected into the receiving chamber (18) and is able to monitor the pressure in the receiving chamber (18) between the elastic bag (13) and the rigid housing.

9. Pulse damper according to claim 8, characterized in that the rigid housing is further provided with pressure regulating means (20) for regulating the pressure in the receiving chamber (18) between the elastic bag (13) and the rigid housing.

10. A pulse damper according to claim 9, characterized in that the pressure regulating means (20) is a pressure regulating plug rod comprising a plug head and a plug rod; the plug is arranged in a columnar rigid shell and is in slidable sealing connection with the side wall of an accommodating cavity (18) of the rigid shell; one end of the plug rod is connected with the plug head, and the other end of the plug rod extends out of the rigid shell; a sealing structure is arranged on the part of the rigid shell, which is contacted with the plug rod; alternatively, the first and second electrodes may be,

the pressure regulating device (20) is a pressure regulating valve.

11. A fluid transfer system comprising a fluid transfer pump and a pulse damper according to any of claims 1-10, the output of the fluid transfer pump (1) being in communication with the fluid inlet of the pulse damper (3).

12. The fluid transfer system of claim 11, further comprising a controller (9), wherein the pulse damper (3) comprises a pressure detection device (2), the controller (9) is electrically connected with the pressure detection device (2) and the fluid transfer pump (1), respectively, the controller (9) obtains a pressure value detected by the pressure detection device (2), when the detected pressure value is within a predetermined range, the fluid transfer system is determined to be in the working state, and the fluid transfer pump (1) is adjusted to operate according to set parameters.

13. The fluid transfer system of claim 12, further comprising a switch (6), wherein the switch (6) is disposed on one side of the output line (15) of the pulse damper (3), and wherein the controller (9) is electrically connected to the switch (6) and is capable of controlling the on-off state of the switch (6) to control the on-off state of the fluid output of the pulse damper (3).

14. The fluid transfer system of claim 12, wherein the pulse dampener (3) further comprises a pressure regulating device (20), the controller (9) is electrically connected to the pressure regulating device (20) via an actuator, and/or the fluid transfer pump (1) is a peristaltic pump.

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