Pulse damper

Abstract

The utility model provides a pulse damper, relates to the technical field of pipeline fluid metering, and aims to solve the problem that the gas filling pressure of the conventional pulse damper is inconvenient to adjust. The pulse damper comprises a damper upper body, a damper lower body and an adjusting device. The damper upper body and the damper lower body are in butt joint to form a containing space used for containing filling gas. An adjusting channel is formed in the damper upper body, the adjusting device comprises a piston movably arranged in the adjusting channel, the piston moves to be close to or away from the containing space, and the periphery of the piston is in sliding sealing with the inner wall of the adjusting channel; a diaphragm is arranged in the containing space and attached to the damper lower body, and the end of the diaphragm is clamped between the damper upper body and the damper lower body and used for sealing a joint between the damper upper body and the damper lower body. According to the utility model, the gas filling pressure of the pulse damper is convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline fluid metering, in particular to a pulse damper. Background Art

[0002] The main function of the pulse damper is to eliminate the water hammer effect in the pipeline. It is usually used at the outlet of the metering pump to eliminate the pulse water hammer of the metering pump. The selection of the pulse damper is based on the single stroke flow rate of the metering pump and the pipeline pressure. The volume of the pulse damper is usually determined according to the single stroke flow rate of the metering pump, and the gas filling pressure of the pulse damper is usually determined according to the pipeline operating pressure. The pulse damper shipped from the factory will be filled with gas according to the design pressure, but the actual pipeline pressure is often different from the design pressure, resulting in a situation where the filling pressure of the pulse damper does not match the actual operating pressure. At the same time, since the metering pump can usually adjust the output flow, that is, the single stroke flow rate can be changed, changing the single stroke flow rate of the metering pump when the pipeline volume remains unchanged will also have a certain impact on the pipeline pressure.

[0003] The current practice is: when the gas filling pressure of the pulse damper is greater than the calculated value of the pipeline operating pressure, the internal gas of the pulse damper is directly released to a value close to the calculated value and discharged into the atmosphere; when the gas filling pressure of the pulse damper is less than the calculated value of the pipeline operating pressure, a special filling device is used to fill the high-pressure gas to a value close to the calculated value. If the above two operation processes are not careful, the reverse operation is required and they are subject to external conditions. Among them, the gas filling process must use special tools and an external high-pressure gas source, and must be carried out after the system stops working. Once the operating conditions of the metering pump change, it needs to be readjusted, which is very inconvenient. Utility Model Content

[0004] The utility model aims to provide a pulse damper to solve the technical problem of inconvenient gas filling pressure regulation of the existing pulse damper.

[0005] The pulse damper provided by the utility model comprises a damper upper body, a damper lower body and an adjusting device, wherein the damper upper body and the damper lower body are butted together to form a storage space for containing filling gas; the damper upper body is provided with an adjusting channel, and the adjusting device comprises a piston movably arranged in the adjusting channel, the piston moves to approach or move away from the storage space, and the outer periphery of the piston is slidably sealed with the inner wall of the adjusting channel; the storage space is provided with a diaphragm, the diaphragm is fitted with the damper lower body, and the end of the diaphragm is clamped between the damper upper body and the damper lower body, and is used to seal the joint between the damper upper body and the damper lower body.

[0006] Furthermore, the adjusting device also includes an adjusting screw, a limit end cover and a limit baffle, wherein the limit baffle is arranged in the adjusting channel, and the limit baffle is provided with a middle hole; the adjusting screw includes an adjusting section, a flange section and a screw section arranged in sequence along its axial direction, the piston is provided with a threaded hole, and the screw section passes through the middle hole and is threadedly connected to the piston through the threaded hole; the limit end cover is fixedly installed on the damper upper body, and a limit space for accommodating the flange section is formed between the limit end cover and the limit baffle, and the limit end cover is provided with a hollow area, and the adjusting section is exposed from the hollow area.

[0007] Furthermore, the inner wall of the adjustment channel is provided with a first step, the first step passes through the damper upper body from the direction away from the damper lower body, the limit baffle is supported on the first step; the limit end cover is detachably connected to the damper upper body.

[0008] Furthermore, a second step is provided on the inner wall of the adjustment channel, and the second step passes through the damper upper body from the direction away from the damper lower body, and along the radial direction of the adjustment channel, the second step is closer to the center line of the adjustment channel than the first step; a limiting shoulder is provided on the outer periphery of the piston, and the limiting shoulder is used to cooperate with the second step to limit the movement stroke of the piston toward the direction approaching the damper lower body.

[0009] Furthermore, a sealing ring groove is formed on the inner wall of the regulating channel, the second step is located between the first step and the sealing ring groove, the sealing ring groove is provided with a first sealing ring, and the first sealing ring is configured to seal the gap between the inner wall of the regulating channel and the outer periphery of the piston.

[0010] Furthermore, the inner wall of the adjustment channel is also provided with a third step, and the third step passes through the damper upper body from the direction close to the damper lower body; the adjustment device also includes a second sealing ring and a pressure ring, the pressure ring is fixedly connected to the damper upper body, the piston is passed through the pressure ring, and a limiting ring groove is formed between the end face of the pressure ring and the third step, and the second sealing ring is arranged in the limiting ring groove.

[0011] Further, the compression ring is threadedly connected to the damper upper body; and / or the limiting end cover is threadedly connected to the damper upper body.

[0012] Further, the adjustment section is provided with an outer hexagonal edge; and / or, an end surface of the adjustment section facing away from the lower body of the damper is provided with an inner hexagonal hole.

[0013] Furthermore, the damper upper body and the damper lower body are detachably fixedly connected via a threaded connection assembly; and / or, the damper upper body is provided with an inflation nozzle, the inflation nozzle is provided with a check element, and the check element is configured to conduct from the inflation nozzle in the direction toward the accommodating space and block from the accommodating space in the direction toward the inflation nozzle.

[0014] Furthermore, the pulse damper also includes a driving device and a pressure measuring device, wherein the driving device is installed on the upper body of the damper, and the driving device is configured to drive the piston to move; the pressure measuring device is installed on the lower body of the damper, and the pressure measuring device is configured to measure the pressure on the medium side; the driving device and the pressure measuring device are both electrically connected to the control system of the equipment.

[0015] The beneficial effects brought by the pulse damper of the utility model are:

[0016] When the pulse damper is in use, the lower body of the damper is installed on the medium side. In the initial state, the piston can be located in the middle of its stroke. According to Boyle's law, when the pressure of the pulse damper needs to be reduced, the piston can be moved in a direction away from the accommodation space to increase the volume of the gas filled in the accommodation space. At this time, under the condition of constant ambient temperature, the pressure of the filling gas will decrease; conversely, when the pressure of the pulse damper needs to be increased, the piston can be moved in a direction close to the accommodation space to compress the volume of the gas filled in the accommodation space. At this time, under the condition of constant ambient temperature, the pressure of the filling gas will increase. In the above manner, the gas filling pressure of the pulse damper is regulated.

[0017] The above-mentioned adjustment process can be achieved by simply adjusting the position of the piston, and can be carried out at any time during the operation of the system, so that the pressure of the pulse damper can be well adapted to the operating conditions of the metering pump at this time, effectively solving the technical problem of inconvenient gas filling pressure adjustment of the pulse damper existing in the prior art.

[0018] In addition, the pulse damper is provided with a diaphragm that fits the lower body of the damper in the accommodation space, and the two ends of the diaphragm are clamped between the upper body of the damper and the lower body of the damper, so that the internal gas and the external medium are isolated, and the sealing of the accommodation space is ensured, so as to prevent the external medium from entering the accommodation space through the gap between the upper body of the damper and the lower body of the damper. In addition, by arranging the outer periphery of the piston to be slidably sealed with the inner wall of the regulating channel of the upper body of the damper, the smoothness of the movement of the piston is ensured, and the sealing between the piston and the regulating channel is also ensured, thereby improving the reliability of the pressure regulation of the filling gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A structural cross-sectional view of a pulse damper provided in Embodiment 1 of the utility model;

[0021] Figure 2 A structural cross-sectional view of the pulse damper provided in the first embodiment of the utility model in a normal filling state;

[0022] Figure 3 A structural cross-sectional view of the pulse damper provided in the first embodiment of the utility model when reducing the internal pressure;

[0023] Figure 4 A structural cross-sectional view of the pulse damper provided in the first embodiment of the utility model when the internal pressure is increased;

[0024] Figure 5 A structural cross-sectional view of a pulse damper provided in Embodiment 2 of the present utility model;

[0025] Figure 6 A structural cross-sectional view of a pulse damper provided in the second embodiment of the utility model in a normal filling state;

[0026] Figure 7 A structural cross-sectional view of the pulse damper provided in the second embodiment of the utility model when reducing the internal pressure;

[0027] Figure 8 This is a structural cross-sectional view of the pulse damper provided in the second embodiment of the utility model when the internal pressure is increased.

[0028] Description of reference numerals:

[0029] 100- damper upper body; 200- damper lower body; 300- adjustment device; 400- accommodation space; 500- threaded connection assembly; 600- inflation nozzle; 700- driving device; 800- pressure measuring device; 010- control system;

[0030] 110 - adjustment channel; 111 - first step; 112 - second step; 113 - sealing ring groove; 114 - third step;

[0031] 310-piston; 311-threaded hole; 312-limiting shoulder; 320-adjusting screw; 321-adjusting section; 322-flange section; 323-screw section; 330-limiting end cover; 340-limiting baffle; 350-first sealing ring; 360-second sealing ring; 370-pressure ring;

[0032] 410-filling gas; 420-diaphragm. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] Embodiment 1

[0035] Figure 1 This is a cross-sectional view of the structure of the pulse damper provided in the first embodiment. Figure 2 This is a cross-sectional view of the structure of the pulse damper provided in the first embodiment in a normal filling state. Figure 1 and Figure 2 As shown, this embodiment provides a pulse damper, including a damper upper body 100, a damper lower body 200 and an adjusting device 300. Specifically, the damper upper body 100 and the damper lower body 200 are butted to form a receiving space 400 for receiving a filling gas 410; the damper upper body 100 is provided with an adjusting channel 110, and the adjusting device 300 includes a piston 310 movably arranged in the adjusting channel 110, wherein the piston 310 moves to approach or move away from the receiving space 400, and the outer periphery of the piston 310 is slidably sealed with the inner wall of the adjusting channel 110; the receiving space 400 is provided with a diaphragm 420, the diaphragm 420 is fitted with the damper lower body 200, and the end of the diaphragm 420 is clamped between the damper upper body 100 and the damper lower body 200, and is used to seal the joint between the damper upper body 100 and the damper lower body 200.

[0036] When the pulse damper is used, the damper lower body 200 is installed on the medium side. Figure 2 As shown, the piston 310 can be located in the middle of its stroke.

[0037] Figure 3 This is a cross-sectional view of the structure of the pulse damper provided in the first embodiment when reducing the internal pressure. Figure 4 This is a cross-sectional view of the structure of the pulse damper provided in the first embodiment when the internal pressure is increased. According to Boyle's law, when the pressure of the pulse damper needs to be reduced, the piston 310 can be moved in a direction away from the accommodation space 400, such as Figure 3As shown, the volume of the gas 410 filled in the accommodating space 400 is increased. At this time, under the condition that the ambient temperature remains unchanged, the pressure of the gas 410 will decrease. On the contrary, when the pressure of the pulse damper needs to be increased, the piston 310 can be moved toward the direction close to the accommodating space 400, as shown. Figure 4 As shown, the volume of the filling gas 410 in the accommodating space 400 is compressed. At this time, under the condition of constant ambient temperature, the pressure of the filling gas 410 will increase. In the above manner, the gas filling pressure of the pulse damper is adjusted.

[0038] The above-mentioned adjustment process can be achieved by simply adjusting the position of the piston 310, and can be carried out at any time during the operation of the system, so that the pressure of the pulse damper can be well adapted to the operating conditions of the metering pump at this time, effectively solving the technical problem of inconvenient gas filling pressure adjustment of the pulse damper existing in the prior art.

[0039] In addition, the pulse damper is provided with a diaphragm 420 that fits with the damper lower body 200 in the accommodation space 400, and the two ends of the diaphragm 420 are clamped between the damper upper body 100 and the damper lower body 200, so as to isolate the internal gas from the external medium and ensure the sealing of the accommodation space 400, thereby preventing the external medium from entering the accommodation space 400 through the gap between the damper upper body 100 and the damper lower body 200. In addition, by setting the outer periphery of the piston 310 to be slidably sealed with the inner wall of the regulating channel 110 of the damper upper body 100, the smoothness of the movement of the piston 310 is ensured, and the sealing between the piston 310 and the regulating channel 110 is also ensured, thereby improving the reliability of the pressure regulation of the filling gas 410.

[0040] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the adjustment device 300 also includes an adjustment screw 320, a limiting end cover 330 and a limiting baffle 340. Specifically, the limiting baffle 340 is arranged in the adjustment channel 110, and the limiting baffle 340 is provided with a middle hole; the adjustment screw 320 includes an adjustment section 321, a flange section 322 and a screw section 323 arranged in sequence along its axial direction, the piston 310 is provided with a threaded hole 311, and the screw section 323 passes through the middle hole and is threadedly connected to the piston 310 through the threaded hole 311; the limiting end cover 330 is fixedly installed on the damper upper body 100, and a limiting space for accommodating the flange section 322 is formed between the limiting end cover 330 and the limiting baffle 340, and the limiting end cover 330 is provided with a hollow area, and the adjustment section 321 is exposed from the hollow area.

[0041] When the pressure of the pulse damper needs to be adjusted, a rotational force can be applied to the adjusting section 321 of the adjusting screw 320 through the hollow area set in the limit end cover 330, so that the adjusting screw 320 rotates in the adjusting channel 110; during the rotation of the adjusting screw 320, since its flange section 322 is restricted between the limit end cover 330 and the limit baffle 340, the adjusting screw 320 can only rotate but cannot move up and down, so that the screw section 323 and the threaded hole 311 of the piston 310 are matched to convert the spiral stroke into the up and down movement stroke of the piston 310, thereby realizing the movement of the piston 310 in the adjusting channel 110, so that the piston 310 is moved away from or close to the accommodating space 400, thereby achieving the purpose of adjusting the pressure of the pulse damper.

[0042] This arrangement of the adjustment device 300 only requires the operator to rotate the adjustment screw 320 to achieve the purpose of adjusting the pressure of the pulse damper, and the adjustment process is simple and reliable.

[0043] Specifically, in this embodiment, the external thread of the screw section 323 of the adjusting screw 320 and the internal thread of the threaded hole 311 of the piston 310 are both reverse threads. That is, when the pressure of the pulse damper needs to be reduced, Figure 3 Turn the adjusting screw 320 in the direction indicated by the arrow b; when the pressure of the pulse damper needs to be increased, Figure 4 The adjusting screw rod 320 is rotated in the direction indicated by the middle arrow b. This arrangement makes the pressure adjustment process of the pulse damper more in line with the daily working habits of the staff and improves the convenience of operation.

[0044] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the adjusting section 321 of the adjusting screw rod 320 protrudes from the limiting end cover 330. This arrangement can expose the adjusting section 321 to the external space, making it easier for the staff to operate.

[0045] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the inner wall of the regulating channel 110 is provided with a first step 111. Specifically, the first step 111 passes through the damper upper body 100 from the direction away from the damper lower body 200. That is, Figure 1 and Figure 2 From the perspective of FIG, the first step 111 passes through the damper upper body 100 from bottom to top, and the limiting baffle 340 is supported on the first step 111; the limiting end cover 330 is detachably connected to the damper upper body 100.

[0046] The above arrangement, on the one hand, realizes the reliable fixation of the limit baffle 340 in the adjustment channel 110, thereby ensuring the effective restriction of the downward movement freedom of the adjustment screw 320. On the other hand, when the limit end cover 330, the adjustment screw 320, and the limit baffle 340 need to be maintained or replaced, these three can also be removed from the damper upper body 100 in turn to improve the convenience of maintenance and replacement.

[0047] In this embodiment, the limiting end cover 330 is threadedly connected to the damper upper body 100. This arrangement facilitates the disassembly and maintenance of the limiting end cover 330 and the adjusting screw rod 320. Specifically, an external thread can be provided on the outer periphery of the limiting end cover 330, and an internal thread can be provided on the inner wall of the adjusting channel 110 of the damper upper body 100. The threaded connection between the limiting end cover 330 and the damper upper body 100 is achieved by the cooperation of the external thread and the internal thread.

[0048] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the adjusting section 321 is provided with an outer hexagonal edge. This arrangement facilitates applying a rotational force to the adjusting screw 320 to achieve rotational drive of the adjusting screw 320.

[0049] In other embodiments, a hexagonal hole may also be provided on the end surface of the adjustment section 321 away from the damper lower body 200. This arrangement is also convenient for applying a rotational force to the adjustment screw 320 to achieve rotational drive of the adjustment screw 320.

[0050] Of course, the outer hexagonal edge and the inner hexagonal hole can also be provided at the same time on the adjusting section 321. With such a configuration, the rotation drive of the adjusting screw rod 320 can be realized by various tools.

[0051] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the inner wall of the regulating channel 110 is further provided with a second step 112. Specifically, the second step 112 passes through the damper upper body 100 from the direction away from the damper lower body 200. That is, Figure 1 and Figure 2 From the perspective of , the second step 112 passes through the damper upper body 100 from bottom to top, and along the radial direction of the adjustment channel 110, the second step 112 is closer to the center line of the adjustment channel 110 than the first step 111; a limiting shoulder 312 is provided on the outer periphery of the piston 310, and the limiting shoulder 312 is used to cooperate with the second step 112 to limit the movement stroke of the piston 310 toward the direction close to the damper lower body 200.

[0052] Please continue to refer to Figure 4When the piston 310 is driven to move toward the accommodation space 400 by the adjusting screw rod 320, when the piston 310 moves to the point where its limit stop shoulder 312 abuts against the second step 112 of the adjusting channel 110, the piston 310 stops moving. At this time, the piston 310 reaches the maximum downward movement. This arrangement can prevent the piston 310 from moving excessively downward and falling off the adjusting channel 110, and has a certain limiting effect on the downward movement of the piston 310.

[0053] Please continue to refer to Figure 1 and Figure 2 In this embodiment, a sealing ring groove 113 is opened on the inner wall of the regulating channel 110. Specifically, the second step 112 is located between the first step 111 and the sealing ring groove 113. The sealing ring groove 113 is provided with a first sealing ring 350. The first sealing ring 350 is configured to seal the gap between the inner wall of the regulating channel 110 and the outer periphery of the piston 310.

[0054] By providing the first sealing ring 350, the sealing between the piston 310 and the regulating channel 110 is ensured, so that the filling gas 410 in the accommodating space 400 will not leak from the gap between the piston 310 and the regulating channel 110. In addition, by providing a sealing ring groove 113 on the inner wall of the regulating channel 110 to install the first sealing ring 350, the position of the first sealing ring 350 can be fixed, and the first sealing ring 350 is prevented from twisting and shifting during the movement of the piston 310, thereby improving the smoothness of the movement of the piston 310.

[0055] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the inner wall of the regulating channel 110 is further provided with a third step 114. Specifically, the third step 114 passes through the damper upper body 100 from the direction close to the damper lower body 200. That is, Figure 1 and Figure 2 From the perspective of , the third step 114 passes through the damper upper body 100 from top to bottom; the adjustment device 300 also includes a second sealing ring 360 and a pressure ring 370, wherein the pressure ring 370 is fixedly connected to the damper upper body 100, the piston 310 is passed through the pressure ring 370, and a limiting ring groove is formed between the end face of the pressure ring 370 and the third step 114, and the second sealing ring 360 is arranged in the limiting ring groove.

[0056] The setting of the second sealing ring 360 further seals the gap between the piston 310 and the regulating channel 110, which not only enhances the sealing effect between the piston 310 and the regulating channel 110, but also the two-stage sealing setting can prevent sealing failure caused by damage to one of the sealing rings.

[0057] In addition, by providing a pressure ring 370 fixedly connected to the damper upper body 100 and utilizing the gap between the pressure ring 370 and the third step 114 to form a limiting ring groove, on the one hand, the second sealing ring 360 can be installed and fixed to prevent the second sealing ring 360 from shifting during the movement of the piston 310; on the other hand, there is no need to open a ring groove structure again on the inner wall of the adjustment channel 110, thereby reducing the processing cost.

[0058] In this embodiment, the pressure ring 370 is threadedly connected to the damper upper body 100. This arrangement facilitates the disassembly and maintenance of the pressure ring 370, the first sealing ring 350, and the second sealing ring 360. Specifically, an external thread can be provided on the outer periphery of the pressure ring 370, and an internal thread can be provided on the inner wall of the adjustment channel 110 of the damper upper body 100. The threaded connection between the pressure ring 370 and the damper upper body 100 is achieved by the cooperation of the external thread and the internal thread.

[0059] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the damper upper body 100 and the damper lower body 200 are detachably fixedly connected via a threaded connection assembly 500 .

[0060] This arrangement not only ensures the connection reliability between the damper upper body 100 and the damper lower body 200, but also facilitates the disassembly and maintenance of the pulse damper, thereby improving the convenience of maintenance.

[0061] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the damper upper body 100 is provided with an inflation nozzle 600, wherein the inflation nozzle 600 is provided with a check element, and the check element is configured to conduct the direction from the inflation nozzle 600 to the accommodating space 400 and block the direction from the accommodating space 400 to the inflation nozzle 600.

[0062] By providing the inflation nozzle 600 on the damper upper body 100, it is convenient to inflate the accommodation space 400. In addition, by providing the above-mentioned check element on the inflation nozzle 600, the inflation nozzle 600 is only in a one-way conduction state, which effectively prevents the leakage of the filling gas 410 inside the accommodation space 400.

[0063] It should be noted that, in this embodiment, the specific structure of the check element in the inflation nozzle 600 and the principle of how to achieve one-way check can be obtained by those skilled in the art based on the prior art. This embodiment does not improve this, so it will not be repeated.

[0064] In this embodiment, the inflation nozzle 600 is pluggable.

[0065] Embodiment 2

[0066] Figure 5This is a cross-sectional view of the structure of the pulse damper provided in the second embodiment. Figure 6 This is a cross-sectional view of the structure of the pulse damper provided in the second embodiment in a normal filling state. Figure 5 and Figure 6 As shown, this embodiment provides another pulse damper, which is different from the pulse damper provided in the above-mentioned embodiment 1 in the following manner.

[0067] Please continue to refer to Figure 5 and Figure 6 In this embodiment, the pulse damper also includes a driving device 700 and a pressure measuring device 800. Specifically, the driving device 700 is installed on the damper upper body 100, and the driving device 700 is configured to drive the piston 310 to move; the pressure measuring device 800 is installed on the damper lower body 200, and the pressure measuring device 800 is configured to measure the pressure on the medium side; the driving device 700 and the pressure measuring device 800 are both electrically connected to the control system 010 of the equipment.

[0068] Figure 7 This is a cross-sectional view of the structure of the pulse damper provided in the second embodiment when reducing the internal pressure. Figure 8 This is a structural cross-sectional view of the pulse damper provided in the second embodiment when the internal pressure is increased. During operation, the pulse damper uses the pressure measuring device 800 installed on the damper lower body 200 to measure the current pressure on the medium side, and outputs the measured pressure data to the control system 010; when the control system 010 determines that the current pressure is too high and needs to be reduced, Figure 7 As shown, the control system 010 will send a corresponding action instruction to the driving device 700, and use the driving device 700 to drive the piston 310 to move upward, so that the piston 310 is away from the accommodating space 400, so as to increase the volume of the filling gas 410 inside the accommodating space 400. At this time, under the condition that the ambient temperature remains unchanged, the pressure of the filling gas 410 will decrease; on the contrary, when the control system 010 determines that the current pressure is too low and the pressure needs to be increased, as shown in FIG. Figure 8 As shown, the control system 010 will send an action command opposite to the above action command to the driving device 700, and use the driving device 700 to drive the piston 310 to move downward, so that the piston 310 is close to the accommodating space 400, so as to compress the volume of the filling gas 410 inside the accommodating space 400. At this time, under the condition that the ambient temperature remains unchanged, the pressure of the filling gas 410 will increase. In this way, feedback adjustment of the gas filling pressure of the pulse damper is achieved.

[0069] During use, the pulse damper uses the pressure measuring device 800 to measure the pressure on the medium side in real time, and performs feedback adjustment on the driving device 700 according to the measurement result, so as to adjust the pressure of the gas 410 filled in the accommodation space 400. The adjustment process has a high degree of automation, and can realize adaptive adjustment of the filling pressure, so that the pressure of the gas 410 filled in the accommodation space 400 is adapted to the current working conditions on the medium side, thereby ensuring the working effect of the pulse damper. In addition, the process does not need to be performed after the system stops working, which is more convenient.

[0070] In this embodiment, the driving device 700 may be an electric actuator or an electromagnetic driver, wherein corresponding connection structures are provided on the electric actuator and the electromagnetic driver to achieve connection with the adjusting screw rod 320 .

[0071] It should be noted that how the pressure measuring device 800 performs feedback control on the driving device 700 according to the measured medium-side pressure to achieve pressure regulation of the gas 410 filled in the accommodating space 400 can be obtained by those skilled in the art based on the prior art. This embodiment does not make any improvements to this, so it will not be repeated here.

[0072] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

[0073] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0074] In the above embodiments, the descriptions of directions such as “inside”, “outside”, “upper”, “lower”, and “side” are all based on the drawings.

[0075] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pulse damper, characterized in that: The invention comprises a damper upper body (100), a damper lower body (200) and an adjusting device (300), wherein the damper upper body (100) and the damper lower body (200) are butt-jointed to form a receiving space (400) for receiving a filling gas (410); the damper upper body (100) is provided with an adjusting channel (110), and the adjusting device (300) comprises a piston (310) movably arranged in the adjusting channel (110), and the piston (310) is moved to move closer to or farther away from the adjusting channel (110). The accommodating space (400) is provided with a diaphragm (420), and the diaphragm (420) is fitted with the damper lower body (200), and the end of the diaphragm (420) is clamped between the damper upper body (100) and the damper lower body (200) to seal the joint between the damper upper body (100) and the damper lower body (200).

2. The pulse damper according to claim 1, characterized in that The adjusting device (300) further comprises an adjusting screw (320), a limiting end cover (330) and a limiting baffle (340), wherein the limiting baffle (340) is arranged in the adjusting channel (110), and the limiting baffle (340) is provided with a middle hole; the adjusting screw (320) comprises an adjusting section (321), a flange section (322) and a screw section (323) which are arranged in sequence along its axial direction, and the piston (310) is provided with a threaded hole (311). The screw section (323) passes through the middle hole and is threadedly connected to the piston (310) through the threaded hole (311); the limiting end cover (330) is fixedly installed on the damper upper body (100), and a limiting space for accommodating the flange section (322) is formed between the limiting end cover (330) and the limiting baffle (340), and the limiting end cover (330) is provided with a hollow area, and the adjustment section (321) is exposed from the hollow area.

3. The pulse damper according to claim 2, characterized in that: The inner wall of the regulating channel (110) is provided with a first step (111), the first step (111) passes through the damper upper body (100) in a direction away from the damper lower body (200), and the limiting baffle (340) is supported on the first step (111); the limiting end cover (330) is detachably connected to the damper upper body (100).

4. The pulse damper according to claim 3, characterized in that The inner wall of the regulating channel (110) is also provided with a second step (112), the second step (112) passes through the damper upper body (100) in a direction away from the damper lower body (200), and along the radial direction of the regulating channel (110), the second step (112) is closer to the center line of the regulating channel (110) than the first step (111); the outer periphery of the piston (310) is provided with a limit stop shoulder (312), the limit stop shoulder (312) is used to cooperate with the second step (112) to limit the movement stroke of the piston (310) in a direction close to the damper lower body (200).

5. The pulse damper according to claim 4, characterized in that A sealing ring groove (113) is provided on the inner wall of the regulating channel (110), the second step (112) is located between the first step (111) and the sealing ring groove (113), and the sealing ring groove (113) is provided with a first sealing ring (350), and the first sealing ring (350) is configured to seal the gap between the inner wall of the regulating channel (110) and the outer periphery of the piston (310).

6. The pulse damper according to claim 5, characterized in that The inner wall of the adjustment channel (110) is also provided with a third step (114), and the third step (114) passes through the damper upper body (100) from the direction close to the damper lower body (200); the adjustment device (300) also includes a second sealing ring (360) and a pressure ring (370), the pressure ring (370) is fixedly connected to the damper upper body (100), the piston (310) is passed through the pressure ring (370), and a limiting ring groove is formed between the end surface of the pressure ring (370) and the third step (114), and the second sealing ring (360) is arranged in the limiting ring groove.

7. The pulse damper according to claim 6, characterized in that The pressure ring (370) is threadedly connected to the damper upper body (100); and / or the limiting end cover (330) is threadedly connected to the damper upper body (100).

8. The pulse damper according to claim 2, characterized in that: The adjustment section (321) is provided with an outer hexagonal edge; and / or, the end surface of the adjustment section (321) facing away from the damper lower body (200) is provided with an inner hexagonal hole.

9. The pulse damper according to claim 1, characterized in that: The damper upper body (100) and the damper lower body (200) are detachably fixedly connected via a threaded connection assembly (500); and / or, the damper upper body (100) is provided with an inflation nozzle (600), and the inflation nozzle (600) is provided with a check element, and the check element is configured to conduct from the inflation nozzle (600) in the direction toward the accommodating space (400) and block from the accommodating space (400) in the direction toward the inflation nozzle (600).

10. The pulse damper according to any one of claims 1 to 9, characterized in that: The pulse damper further comprises a driving device (700) and a pressure measuring device (800), wherein the driving device (700) is mounted on the damper upper body (100), and the driving device (700) is configured to drive the piston (310) to move; the pressure measuring device (800) is mounted on the damper lower body (200), and the pressure measuring device (800) is configured to measure the pressure on the medium side; the driving device (700) and the pressure measuring device (800) are both electrically connected to the control system (010) of the device.

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