Pulsation reduction device of dry screw compressor

Abstract

The invention relates to the technical field of compressor airflow pulsation control devices, in particular to a dry screw compressor pulsation reduction device which comprises a shell, at least two throttling partition plates are arranged in the shell from left to right, the throttling partition plates divide the interior of the shell into at least three cavities which are communicated with one another, and the throttling partition plates are arranged in the shell. A fluid inlet is formed in the position of the shell of the rightmost cavity, a fluid outlet perpendicular to the fluid inlet is formed in the position of the shell of the leftmost cavity, an inlet throttling distributor corresponding to the upper portion and the lower portion of the fluid inlet in the middle is fixedly installed in the rightmost cavity, and the inlet throttling distributor is perpendicular to the fluid inlet. And the leftmost cavity is internally provided with an outlet throttling distributor which corresponds to the fluid outlet in the front-back direction and is centered. According to the pulsation reduction device of the dry screw compressor, the airflow pulsation level and distribution condition in the pulsation reduction device are changed, and then the airflow pulsation and vibration amplitude of the pulsation reduction device and a subsequent medium conveying pipeline are restrained.

Description

Technical Field

[0001] The invention relates to the technical field of compressor air flow pulsation control devices, in particular to a dry screw compressor pulsation reduction device. Background Art

[0002] Twin-screw compressors are positive displacement compressors. Their working characteristics are that the exhaust process is indirect and periodic, which will inevitably excite the internal fluid of the compressor to a pulsating state, causing the fluid parameters in the pipe to change periodically over time, that is, to generate airflow pulsation. When the pulsating fluid passes through elbows, reducers, branch pipes and other components, it will generate an exciting force that changes periodically over time. Under the action of the exciting force, the system will produce mechanical vibrations. Therefore, in general, a buffer tank is installed at the outlet of the twin-screw compressor. The buffer tank has a certain volume. When the pulsating airflow passes through it, the flow rate will become uniform, thereby slowing down the direct impact of the pulsating airflow on the pipeline, thereby reducing pipeline vibration. If the volume of the buffer tank is small or the design is unreasonable, the vibration level of the buffer tank body and the pipeline connected to it will exceed the allowable value. If the compressor operates under this condition for a long time, there will be certain safety hazards. Therefore, it is necessary to solve the problem of the system vibration level exceeding the allowable value caused by the exciting force that changes periodically over time generated by the airflow pulsation.

[0003] A Chinese utility model patent document with publication number CN 206801881U discloses a dry oil-free screw compressor buffer tank, comprising a buffer tank shell, an air inlet pipe is installed on the top of the buffer tank shell, an air outlet is opened on one side of the buffer tank shell, and the air outlet is connected to the screw compressor through a pipeline, a buffer tank filter element is installed inside the buffer tank shell, an upper end cover and a lower end cover are installed on the top and bottom of the buffer tank filter element respectively, and an air inlet is opened on the upper end cover. The utility model provides a buffer tank filter element inside the buffer tank. Through the heating and drying layer, the primary filter screen, the water-absorbing cotton layer and the secondary filter screen on the buffer tank filter element, the gas entering the screw compressor can be dried and filtered in an integrated manner, thereby saving the cost of gas treatment and simplifying the gas treatment process, avoiding dust-containing gas and gas carrying water vapor from entering the screw compressor and affecting its normal operation. This patented technology ensures the dryness and cleanliness of the gas entering the screw compressor, but does not mention solving the problem of the system vibration level exceeding the allowable value caused by the exciting force that varies periodically with time due to air flow pulsation.

[0004] The Chinese invention patent document with the publication number CN 111677647A discloses a new type of compressor buffer tank, including a tank body, an internal pipeline, an air inlet, an air outlet, a first inner head, a second inner head and an air vent, wherein the first inner head and the second inner head are respectively arranged inside the tank body, and the first inner head and the second inner head divide the inside of the tank body into three independent chambers, the internal pipeline is arranged inside the tank body and runs through the three chambers, and an air vent is arranged on the internal pipeline of each chamber, an air inlet is arranged at one end of the tank body, the air inlet is connected to the internal pipeline, and an air outlet is arranged on the side wall of the tank body, and the air outlet is used for the discharge of gas in the tank body. The invention suppresses the pulsation of the air flow by changing the flow direction and route of the gas through a new structural form, and the end of the internal pipeline away from the air inlet extends out of the tank body, which can reduce the overall length and volume of the buffer tank while suppressing the gas pulsation, and can realize the support of the internal pipeline while saving material costs. Although this technology can suppress air flow pulsation, its structural design has three outlets, which will bring certain difficulties to the arrangement of the compressor outlet pipe and is not suitable for the introduction and use of mature processes.

[0005] The Chinese invention patent document with publication number CN 104481838A discloses a compressor buffer tank, including a tank body with an air inlet pipe and an air outlet pipe respectively, the internal space of the tank body is divided into an air inlet cavity and an air outlet cavity by an upper baffle located at the upper part of the tank body and a vertical baffle welded to the upper baffle, and a long guide plate and a short guide plate extending into the air inlet cavity and the air outlet cavity are arranged obliquely at the lower part of the vertical baffle; the air inlet pipe is arranged on the tank wall of the tank body of the air inlet cavity; and a central connecting pipe connecting the air inlet cavity and the air outlet cavity is arranged on the upper baffle. Compared with the prior art, the present invention can solve the problem that the existing compressor buffer tank causes large vibration and noise during compressor operation. The patented technology allows compressed air to flow in the air inlet cavity and continuously collide with the tank wall, the upper baffle, and the long guide plate to weaken the energy of air flow pulsation, but the problem is that the air inlet cavity will generate large air flow pulsation energy due to air flow collision, which may cause large vibration.

[0006] The Chinese invention patent document with publication number CN 103410702A discloses a natural gas compressor buffer tank device, including a buffer tank, an air outlet pipe and an air inlet pipe, wherein the buffer tank is formed by a middle cylinder and end caps fixedly connected at both ends, the air outlet pipe is fixedly connected to any end cap, the air inlet pipe is fixedly connected to the cylinder, and further includes a support plate, a 90-degree elbow and two flexible pipes, the two flexible pipes are respectively fixedly connected to the air outlet pipe and the air inlet pipe, the 90-degree elbow is later than the inside of the buffer tank, and the outlet of the 90-degree elbow faces the end cap connected to the opposite side of the air outlet pipe end cap, the support plate is located below the buffer tank, and the support plate is fixedly connected to the buffer tank. The present invention is conducive to simplifying the complexity and magnitude of the forces on the buffer tank, the air inlet pipe and the air outlet pipe, uniformly airflow at each point of the cross section of the air outlet pipe, and at the same time avoiding the vibration of the previous compression stage and the next compression stage of the buffer tank from being transmitted to the buffer tank. This technology only simplifies the complexity and magnitude of the forces on the buffer tank, the air inlet pipe and the air outlet pipe, but does not mention solving the problem of the system vibration level exceeding the allowable value caused by the exciting force generated by the air flow pulsation that changes periodically over time. Summary of the invention

[0007] The present invention provides a dry screw compressor pulsation reduction device, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that the system vibration level exceeds the allowable value due to the exciting force generated by air flow pulsation that changes periodically with time.

[0008] The technical solution of the present invention is achieved through the following measures: a dry screw compressor pulsation reduction device, including a shell, at least two throttling baffles are arranged from left to right in the shell, the throttling baffles divide the inside of the shell into at least three interconnected chambers, a fluid inlet is arranged at the shell of the rightmost chamber, a fluid outlet perpendicular to the fluid inlet is arranged at the shell of the leftmost chamber, an inlet throttling distributor corresponding to the upper and lower center of the fluid inlet is fixedly installed in the rightmost chamber, and the inlet throttling distributor is perpendicular to the fluid inlet, an outlet throttling distributor corresponding to the front and rear center of the fluid outlet is arranged in the leftmost chamber, and the outlet throttling distributor is perpendicular to the fluid outlet, and a orifice cylinder is arranged in the chamber to the left of the rightmost chamber.

[0009] The following are further optimizations and / or improvements to the above technical solutions: Furthermore, a connecting hole connecting the left and right sides is arranged at the center of each of the throttling baffles, and an inner insert tube concentric with the connecting hole is arranged on the right side of each connecting hole.

[0010] Furthermore, reinforcing ribs are arranged at intervals on the right side of each throttling baffle, surrounding the corresponding inner insert tube as the center, and the reinforcing ribs are evenly distributed on the outer wall of the inner insert tube in a ring shape.

[0011] Furthermore, there are two throttling baffles, including a first throttling baffle and a second throttling baffle.

[0012] Furthermore, the first throttling baffle and the second throttling baffle divide the interior of the shell from the fluid inlet to the fluid outlet into a first chamber, a second chamber and a third chamber.

[0013] Furthermore, the fluid inlet is arranged on the shell corresponding to the first chamber, the fluid outlet is arranged on the shell corresponding to the third chamber, the inlet throttling distributor is arranged in the first chamber, and the outlet throttling distributor is arranged in the third chamber.

[0014] Furthermore, a perforated plate cylinder is fixedly installed on the right side of the inner insert tube of the second chamber, and a perforated plate cylinder is fixedly installed in the third chamber.

[0015] Furthermore, the inner wall of the orifice plate cylinder is provided with a steel wool layer and a stainless steel mesh from the outside to the inside.

[0016] Furthermore, the inner wall of the shell on the right side of the first chamber and the inner wall of the shell on the left side of the third chamber are both provided with steel wool layers and stainless steel mesh from the outside to the inside.

[0017] The dry screw compressor pulsation reduction device described in the present invention is a new type of multi-chamber pulsation reduction device. Through the new structural design, it can better realize the adjustment of the pressure field and velocity field distribution inside the pulsation reduction device, change the air flow pulsation level and distribution in the pulsation reduction device, and then suppress the air flow pulsation and vibration amplitude of the pulsation reduction device and the subsequent medium conveying pipeline, and improve the air flow pulsation level and vibration level inside the pulsation reduction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a schematic diagram of the right view structure of an embodiment of the present invention.

[0019] Attached Figure 2 For attachment Figure 1 AA section view of the structure.

[0020] Attached Figure 3 Schematic diagram of the structure of the fluid outlet.

[0021] Attached Figure 4 This is a simulation diagram of the internal flow field from a top view of the dry screw compressor pulsation reduction device of the present invention.

[0022] Attached Figure 5 This is a simulation diagram of the internal flow field from the main viewing angle of the dry screw compressor pulsation reduction device of the present invention.

[0023] The codes in the accompanying drawings are: 1 is a shell, 2 is a fluid inlet, 3 is a fluid outlet, 4 is an inlet throttling distributor, 5 is an outlet throttling distributor, 6 is a orifice cylinder, 7 is a connecting hole, 8 is an inner insert, 9 is a reinforcing rib, 10 is a first throttling baffle, 11 is a second throttling baffle, 12 is a first chamber, 13 is a second chamber, 14 is a third chamber, 15 is a steel wool layer, and 16 is a support rod. DETAILED DESCRIPTION

[0024] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0025] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 2 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 2 The layout direction is determined by the

[0026] The present invention will be further described below in conjunction with embodiments: Embodiment 1: As attached Figures 1 to 3 As shown, the pulsation reduction device of a dry screw compressor includes a shell 1, in which at least two throttling baffles are arranged from left to right, and the throttling baffles divide the interior of the shell 1 into at least three interconnected chambers, a fluid inlet 2 is arranged at the shell 1 of the rightmost chamber, a fluid outlet 3 perpendicular to the fluid inlet 2 is arranged at the shell 1 of the leftmost chamber, an inlet throttling distributor 4 corresponding to the upper and lower center of the fluid inlet 2 is fixedly installed in the rightmost chamber, and the inlet throttling distributor 4 is perpendicular to the fluid inlet 2, an outlet throttling distributor 5 corresponding to the front and back center of the fluid outlet 3 is arranged in the leftmost chamber, and the outlet throttling distributor 5 is perpendicular to the fluid outlet 3, and an orifice plate cylinder 6 is arranged in the chamber to the left of the rightmost chamber.

[0027] The position setting of the inlet throttling distributor 4 can control the distribution of the pressure field and velocity field of the process fluid in the chamber corresponding to the fluid inlet 2, optimize the flow condition of the process fluid inside the chamber corresponding to the fluid inlet 2, reduce the impact of turbulence on the chamber corresponding to the fluid inlet 2, and thus reduce the airflow pulsation level and vibration amplitude inside the chamber corresponding to the fluid inlet 2.

[0028] The prior art can reduce the air flow pulsation and pipeline vibration of the buffer tank body and the medium delivery pipeline by adding a buffer tank, but the medium delivery pipeline and even the compressor body need to be significantly modified to meet the use requirements of the buffer tank, or the ability to reduce the pulsation and vibration amplitude is insufficient and cannot meet the production requirements. Compared with the prior art, the dry screw compressor pulsation reduction device of the present invention can effectively reduce the air flow pulsation amplitude and vibration amplitude of the pulsation reduction device and the subsequent medium delivery pipeline by designing and adjusting the internal structure of the compressor pulsation reduction device, while ensuring that the production of the device and the operating parameters of the compressor itself are not affected, and the state of the compressor and the medium delivery pipeline is not changed. The pulsation amplitude of the air flow inside the pulsation reduction device and the subsequent medium delivery pipeline can reach the range specified in the API619 standard (rotary positive displacement compressors for general refinery devices), and at the same time, the vibration amplitude of the pulsation reduction device and the subsequent medium delivery pipeline can reach the range of limit 4 in the "Requirements of the Purdue Compressor Technology Association of the United States on Mechanical Amplitude and Vibration Frequency".

[0029] Embodiment 2: As attached Figure 2 As shown, as an optimization of the above embodiment, a connecting hole 7 connecting left and right is provided at the center of each throttling partition, and an inner insert tube 8 concentric with the connecting hole 7 is provided on the right side of each connecting hole 7.

[0030] Embodiment 3: As attached Figure 2 As shown, as an optimization of the above embodiment, reinforcing ribs 9 are arranged at intervals on the right side of each throttling baffle and are centered around the corresponding inner tube 8. The reinforcing ribs 9 are evenly distributed on the outer wall of the inner tube 8 in a ring shape.

[0031] The reinforcing ribs 9 ensure the strength of the structural member at the connecting hole 7 and ensure the guiding stability of the process fluid.

[0032] Embodiment 4: As attached Figure 2 As shown, as an optimization of the above embodiment, the number of throttling baffles is two, including a first throttling baffle 10 and a second throttling baffle 11 .

[0033] Embodiment 5: As attached Figure 2 As shown, as an optimization of the above-mentioned embodiment 4, the first throttling partition 10 and the second throttling partition 11 divide the interior of the shell 1 from the fluid inlet 2 to the fluid outlet 3 into a first chamber 12, a second chamber 13 and a third chamber 14.

[0034] Embodiment 6: As attached Figure 2 As shown, as an optimization of the above-mentioned embodiment 5, the fluid inlet 2 is arranged on the shell 1 corresponding to the first chamber 12, the fluid outlet 3 is arranged on the shell 1 corresponding to the third chamber 14, the inlet throttling distributor 4 is arranged in the first chamber 12, and the outlet throttling distributor 5 is arranged in the third chamber 14.

[0035] The outlet throttling distributor 5 is arranged in the third chamber 14 perpendicular to the fluid outlet 3 and is centered on the fluid outlet 3 from the main viewing direction (see Figure 3 ), to control the distribution of the pressure field and velocity field of the process fluid from the third chamber 14 to the outlet pipeline, optimize the flow of the process fluid inside the third chamber 14, reduce the impact of turbulence on the third chamber 14, and thus reduce the air flow pulsation level and vibration amplitude inside the third chamber 14.

[0036] Embodiment 7: As required, as an optimization of the above embodiment, a perforated plate cylinder 6 is fixedly installed on the right side of the inner insert tube 8 of the second chamber 13 , and a perforated plate cylinder 6 is fixedly installed in the third chamber 14 .

[0037] Embodiment 8: As required, as an optimization of the above-mentioned embodiment 7, the inner wall of the orifice plate cylinder 6 is provided with a steel wool layer 15 and a stainless steel mesh from the outside to the inside.

[0038] Embodiment 9: As required, as an optimization of the above embodiment, the inner wall of the shell 1 on the right side of the first chamber 12 and the inner wall of the shell 1 on the left side of the third chamber 14 are provided with a steel wool layer 15 and a stainless steel mesh from the outside to the inside.

[0039] The arrangement of the orifice plate cylinder 6, the steel wool layer 15 and the stainless steel mesh disperses the impact caused by the pulsating airflow and reduces noise at the same time.

[0040] The specific design scheme of the dry screw compressor pulsation reduction device is as follows: As attached Figure 1 As shown, the first throttling baffle 10 and the second throttling baffle 11 designed inside the housing 1 divide the interior of the housing 1 from the fluid inlet 2 to the fluid outlet 3 into the first chamber 12, the second chamber 13 and the third chamber 14, so that the process gas forms a gas streamline from the fluid inlet 2 of the pulsation reduction device through the first, second and third chambers to the fluid outlet 3 of the pulsation reduction device. Flanges can be set at the fluid inlet 2 and the fluid outlet 3.

[0041] Furthermore, the first chamber 12 of the pulsation reduction device is designed to be cylindrical. The process fluid inlet 2 is located at the upper part of the first chamber 12. A circle of steel wool silencer material is attached to the inside of the first chamber 12, and a stainless steel wire mesh is attached to the inside of the silencer material to disperse the impact caused by the pulsating airflow and reduce noise. An inlet throttling distributor 4 is designed inside the first chamber 12. The inlet throttling distributor 4 is arranged perpendicular to the fluid inlet 2, so that the vortex of the process fluid entering the fluid inlet 2 can be tangent to the inlet throttling distributor 4. In this design scheme, as shown in the attached Figure 2As shown, the inlet throttling distributor 4 is arranged in the third chamber 14 perpendicular to the fluid inlet 2, and from the perspective of the top view, it is centered on the fluid inlet 2 to control the distribution of the pressure field and velocity field of the process fluid in the first chamber 12, optimize the flow of the process fluid in the first chamber 12, reduce the impact of turbulence on the first chamber 12, and thus reduce the air flow pulsation level and vibration amplitude in the first chamber 12. The inlet throttling distributor 4 can be fixed at the designed position by a support rod 16, for example, the support rod 16 can be made of flat steel. The inlet throttling distributor 4 is distributed with holes.

[0042] Furthermore, an opening is designed at the throttling partition between the first and second chambers 13 of the pulsation reduction device to ensure smooth passage of the process fluid. An inner tube 8 is designed at the opening, and the diameter of the inner tube 8 is equal to the diameter of the hole. Six reinforcing ribs 9 are designed around the inner tube 8, and the reinforcing ribs 9 are evenly distributed on the outer wall of the inner tube 8 in a ring shape. The reinforcing ribs 9 are welded to the throttling partition between the first and second chambers, ensuring the strength of the structural parts at the opening and the guiding stability of the process fluid.

[0043] Furthermore, the second chamber 13 of the pulsation reduction device is designed to be cylindrical. A perforated plate cylinder 6 is arranged inside the second chamber 13 and is attached to the inner wall of the second chamber 13. A circle of steel wool silencing material is attached inside the perforated plate cylinder 6, and a stainless steel wire mesh is attached inside the silencing material to disperse the impact caused by the pulsating airflow and reduce noise at the same time.

[0044] Furthermore, an opening is also designed at the throttling partition between the second and third chambers 14 of the pulsation reduction device to ensure smooth passage of the process fluid. An inner tube 8 is designed at the opening, and the diameter of the inner tube 8 is equal to the diameter of the hole. Six reinforcing ribs 9 are designed around the inner tube 8, and the reinforcing ribs 9 are evenly distributed on the outer wall of the inner tube 8 in a ring shape. The reinforcing ribs 9 are welded to the process fluid throttling partition between the first and second chambers, ensuring the strength of the structural parts at the opening and the guiding stability of the process fluid.

[0045] Furthermore, the third chamber 14 of the pulsation reduction device is designed to be cylindrical. The process fluid outlet 3 is located on the side of the third chamber 14. An orifice plate cylinder 6 is arranged inside the third chamber 14 and is attached to the inner wall of the third chamber 14. A circle of steel wool silencer material is attached inside the orifice plate cylinder 6, and a stainless steel wire mesh is attached inside the silencer material to disperse the impact caused by the pulsating airflow and reduce noise at the same time. An outlet throttling distributor 5 is designed inside the third chamber 14. The outlet throttling distributor 5 is arranged perpendicular to the fluid outlet 3, so that the process fluid vortex can be tangent to the outlet throttling distributor 5. In this design, the outlet throttling distributor 5 is centrally arranged at the center line of the outlet flange to control the distribution of the pressure field and velocity field of the process fluid from the third chamber 14 to the outlet pipeline, optimize the flow of the process fluid inside the third chamber 14, reduce the impact of turbulence on the third chamber 14, and thus reduce the airflow pulsation level and vibration amplitude inside the third chamber 14. The outlet throttling distributor 5 can be fixed at a designed position by a support rod 16. For example, the support rod 16 can be made of flat steel. The outlet throttling distributor 5 is distributed with holes.

[0046] The above invention can better adjust the pressure field distribution inside the pulsation reduction device. The pressure field distribution inside the pulsation reduction device of the present invention is uniform (see Figure 4 , Figure 5 ), there is no biased form. The present invention also realizes the control of the pulsation reduction device and the air flow pulsation level inside the pipeline, and the pulsation reduction device and the air flow pulsation level inside the pipeline are significantly reduced, with a maximum reduction of 90%. Furthermore, the control of the effective value level of the vibration velocity of the pulsation reduction device and the pipeline is realized, and the maximum reduction of the effective value of the vibration velocity at the pulsation reduction device is 86.5%, and the maximum reduction of the effective value of the vibration velocity at the pipeline is 84.5%.

[0047] The maximum air flow pulsation amplitude of the original compressor pulsation reduction device is 5.0kPa, the maximum effective value of the vibration velocity is 113.5mm / s, and the maximum effective value of the vibration velocity at the subsequent medium delivery pipeline is 111.0mm / s. Under the same working conditions, the maximum air flow pulsation amplitude of the pulsation reduction device designed by the present invention is 1.2kPa, the maximum effective value of the vibration velocity of the pulsation reduction device designed by the present invention is 15.3mm / s, and the maximum effective value of the vibration velocity at the subsequent medium delivery pipeline is 17.2mm / s.

[0048] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A dry screw compressor pulsation reduction device, Features It includes a shell, in which at least two throttling baffles are arranged from left to right, and the throttling baffles divide the interior of the shell into at least three chambers connected to each other. A fluid inlet is arranged at the shell of the rightmost chamber, and a fluid outlet perpendicular to the fluid inlet is arranged at the shell of the leftmost chamber. An inlet throttling distributor corresponding to the upper and lower center of the fluid inlet is fixedly installed in the rightmost chamber, and the inlet throttling distributor is perpendicular to the fluid inlet. An outlet throttling distributor corresponding to the front and rear center of the fluid outlet is arranged in the leftmost chamber, and the outlet throttling distributor is perpendicular to the fluid outlet. Orifice cylinders are arranged in the chambers to the left of the rightmost chamber.

2. The dry screw compressor pulsation reduction device according to claim 1, Features A connecting hole for connecting the left and right sides is arranged at the center of each throttling partition, and an inner insert pipe concentric with the connecting hole is arranged on the right side of each connecting hole.

3. The dry screw compressor pulsation reduction device according to claim 2, Features The right side of each throttling partition is provided with reinforcing ribs centered around the corresponding inner insert pipe at intervals, and the reinforcing ribs are evenly distributed on the outer wall of the inner insert pipe in a ring shape.

4. The dry screw compressor pulsation reduction device according to claim 1, 2 or 3, Features There are two throttling baffles, including a first throttling baffle and a second throttling baffle.

5. The dry screw compressor pulsation reduction device according to claim 4, Features The first throttle baffle and the second throttle baffle divide the interior of the shell into a first chamber, a second chamber and a third chamber from the fluid inlet to the fluid outlet.

6. The dry screw compressor pulsation reduction device according to claim 5, Features The fluid inlet is arranged on the shell corresponding to the first chamber, the fluid outlet is arranged on the shell corresponding to the third chamber, the inlet throttling distributor is arranged in the first chamber, and the outlet throttling distributor is arranged in the third chamber.

7. The dry screw compressor pulsation reduction device according to claim 5, Features A perforated plate cylinder is fixedly installed on the right side of the inner insert pipe of the second chamber, and a perforated plate cylinder is fixedly installed in the third chamber.

8. The dry screw compressor pulsation reduction device according to claim 7, Features The inner wall of the orifice plate cylinder is provided with a steel wool layer and a stainless steel mesh from the outside to the inside.

9. The dry screw compressor pulsation reduction device according to claim 8, Features The inner wall of the shell on the right side of the first chamber and the inner wall of the shell on the left side of the third chamber are both provided with steel wool layers and stainless steel mesh from the outside to the inside.

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