Exhaust buffer tank of piston compressor

Abstract

The utility model discloses an exhaust buffer tank of a piston compressor, which belongs to the technical field of compressor buffer and comprises a cylinder, a first seal head and a fourth seal head are arranged at two ends of the cylinder, the cylinder and the fourth seal head jointly form a cylindrical tank with a cavity, and a first filter tube and a second filter tube are fixedly connected in the cylinder. The filter tube is a hollow straight steel tube with two open ends, a second seal head and a third seal head are arranged in the cylinder and divide the inside of the cylinder into a first working cavity, a second working cavity and a third working cavity, the first filter tube is communicated with the first working cavity and the second working cavity in the cylinder, and the second filter tube is communicated with the third working cavity in the cylinder. And the second filter tube transversely penetrates through the three working cavities in the cylinder to communicate the first working cavity with the third working cavity. By adjusting the volume of the working cavity and the position of the filter tube, pulsating gas exhausted from the two cylinders can be better matched in phase in the buffer tank, so that a good pulsating eliminating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor buffering, and particularly relates to an exhaust buffer tank for a piston compressor. Background Art

[0002] In the existing compressor system, especially in the piston compressor system, the exhaust process is often accompanied by strong pulsation phenomena. These pulsations not only cause the vibration of the pipeline, increase the maintenance cost, but also may have an adverse impact on the stable operation of the compressor. To alleviate this problem, a buffer tank is usually set at the exhaust port of the compressor to absorb and reduce the exhaust pulsation. However, the traditional exhaust buffer tank has the following problems in the design and use process:

[0003] 1. The traditional exhaust buffer tank lacks flexibility in the volume distribution of the working chamber. Once manufactured, it is difficult to adjust the volume of the internal working chamber. This results in difficulty in quickly finding the optimal volume distribution scheme according to different working conditions in practical applications, thus limiting the further improvement of the buffering effect;

[0004] 2. Due to the structural design of the traditional buffer tank, once the volume distribution needs to be adjusted, it is often necessary to disassemble the entire buffer tank or perform complex operations, which not only increases the maintenance cost but also affects the production efficiency;

[0005] 3. In some occasions with high requirements for vibration control, the pulsation elimination effect of the traditional buffer tank is often difficult to reach the ideal state, resulting in excessive pipeline vibration and increasing the risk of equipment failure. Summary of the Utility Model

[0006] In view of the problems existing in the above background art, the utility model provides an exhaust buffer tank for a piston compressor.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A piston compressor exhaust buffer tank provided by the present utility model includes a cylinder body. It is characterized in that first and fourth end heads are arranged at both ends of the cylinder body, which together with the cylinder body form a cylindrical tank with a cavity. A first filter pipe and a second filter pipe are fixedly connected inside the cylinder body. The filter pipes are hollow straight steel pipes with openings at both ends. A second end head and a third end head are arranged inside the cylinder body. The second end head and the third end head divide the interior of the cylinder body into a first working chamber, a second working chamber, and a third working chamber. The first filter pipe communicates the first working chamber and the second working chamber inside the cylinder body. The second filter pipe crosses the three working chambers inside the cylinder body to communicate the first working chamber and the third working chamber. A first air inlet and a second air inlet are arranged at the top of the cylinder body. The first air inlet communicates with the second working chamber. The second air inlet communicates with the third working chamber. An exhaust port is arranged on one side of the cylinder body. A bracket assembly is welded to the inner wall of the cylinder body, and an electric wrench is fixed on the bracket assembly.

[0009] In some embodiments, the bracket assembly includes a fixing block, a bracket plate, a backing plate, and a cover plate. The electric wrench is key-connected to the fixing block. Corresponding internal threaded holes are provided on the bracket plate, and it is welded to the backing plate. The fixing block, the bracket plate, and the cover plate are connected together by bolts to form an electric wrench bracket structure that is convenient for disassembly.

[0010] In some embodiments, a sewage outlet is arranged at the bottom of the cylinder body, and a sewage outlet plug is arranged at the bottom of the sewage outlet.

[0011] In some embodiments, a cable is connected to one side of the electric wrench to provide power drive for the electric wrench; a cable connector is arranged inside the sewage outlet to facilitate the safe and reliable connection of the cable to the inside of the buffer tank.

[0012] In some embodiments, transmission screws are connected to both ends of the second end head by threads. The transmission screws are connected to the electric wrench. By rotating the transmission screws, the position of the second end head is changed, and thus the volumes of the first working chamber and the second working chamber are adjusted.

[0013] In some embodiments, the transmission screws are key-connected or thread-connected to the electric wrench.

[0014] In some embodiments, a support ring and a support plate are further included. A clearance fit is provided between the support ring and the filter pipe. The support ring and the support plate are connected by fillet welds, and the support plate and the cylinder body are connected by fillet welds.

[0015] In some embodiments, the first filter pipe and the second filter pipe are locked by a connecting plate to further enhance the support and stability of the filter pipes.

[0016] Based on the above technical solutions, the embodiments of the present utility model can at least produce the following technical effects:

[0017] (1)The piston compressor exhaust buffer tank provided by the present utility model can quickly adjust the volume distribution of the internal working chamber of the buffer tank without disassembling the container through the combination of an electric wrench and a transmission screw. This adjustment method can quickly find the optimal volume distribution mode of the buffer working chamber during on-site trial operation, effectively reducing the commissioning time and cost. By adjusting the volume of the working chamber and the position of the filter pipe, the pulsating gas discharged from the two cylinders can better match the phase in the buffer tank, thereby achieving a good pulsation elimination effect. This helps to reduce the vibration of the overall pipeline, lower the maintenance cost, and improve the stability and reliability of equipment operation.

[0018] (2)After the commissioning of the piston compressor exhaust buffer tank provided by the present utility model, the electric wrench and the transmission screw can be selected to be disassembled and replaced with matching parts installed on the transmission screw, thereby simplifying the internal structure of the buffer tank, reducing unnecessary components, and improving the reliability and durability of the overall structure. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic structural diagram of the exhaust buffer tank of the present utility model;

[0021] Figure 2 is Figure 1 an enlarged view of part A in

[0022] Figure 3 is Figure 2 a cross-sectional view of the A-A plane in

[0023] In the above-mentioned drawings, the component names corresponding to the reference numerals are as follows:

[0024] 1. Exhaust port; 2. First head; 3. First filter pipe; 4. Support ring; 5. Support plate; 6. Cable; 7. Bracket assembly; 701. Base plate; 702. Bolt; 703. Cover plate; 704. Fixed block; 705. Bracket plate; 8. Electric wrench; 9. Transmission screw; 10. Second head; 11. Cylinder body; 12. Connecting plate; 13. First air inlet; 14. Third head; 15. Second air inlet; 16. Fourth head; 17. Second filter pipe; 18. Drain port; 19. Cable joint; 20. Drain port plug; 21. First working chamber; 22. Second working chamber; 23. Third working chamber. Detailed Embodiments

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0026] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0027] Embodiment 1:

[0028] As Figure 1 shown, a piston compressor exhaust buffer tank includes a cylinder body 11. First end caps 2 and fourth end caps 16 are provided at both ends of the cylinder body 11, which together with the cylinder body 11 form a cylindrical tank with a cavity. A first filter pipe 3 and a second filter pipe 17 are fixedly connected inside the cylinder body 11. The filter pipes are hollow straight steel pipes with openings at both ends, and the two filter pipes throttle the gas flowing through the exhaust buffer tank.

[0029] More specifically, a second end cap 10 and a third end cap 14 are provided inside the cylinder body 11. The second end cap 10 and the third end cap 14 divide the interior of the cylinder body 11 into a first working chamber 21, a second working chamber 22 and a third working chamber 23. The first filter pipe 3 communicates the first working chamber 21 and the second working chamber 22 inside the cylinder body 11. The second filter pipe 17 crosses the three working chambers inside the cylinder body 11 to communicate the first working chamber 21 and the third working chamber 23. A first air inlet 13 and a second air inlet 15 are provided at the top of the cylinder body 11. The first air inlet 13 communicates with the second working chamber 22, and the second air inlet 15 communicates with the third working chamber 23. An exhaust port 1 is provided on one side of the cylinder body 11.

[0030] The heads used are all hemispherical heads. The center of the hemispherical head faces the expansion cavity, and the center line of the hemispherical head is collinear with the axis of the tank body. When the head is hemispherical, when the gas contacts the head, a turbulent flow will be formed at the edge of the head, reducing the pressure of the gas on the joint between the head and the inner wall of the tank body and reducing the replacement frequency of the head.

[0031] During operation, the pulsating compressed gas discharged from two cylinders with the same exhaust pressure of the piston compressor enters the second working chamber 22 divided by the second head 10 and the third head 14 and the third working chamber 23 divided by the third head 14 and the fourth head 16 through the first air inlet 13 and the second air inlet 15 respectively, and then enters the first working chamber 21 divided by the first head 2 and the second head 10 through the first filter pipe 3 and the second filter pipe 17 respectively. The two compressed gases converge here and are then discharged from the exhaust hole 1.

[0032] Embodiment 2:

[0033] As Figures 1 - 3 shown, this embodiment is further optimized on the basis of Embodiment 1. Specifically:

[0034] A bracket assembly 7 is welded to the inner wall of the cylinder body 11, and an electric wrench 8 is fixed on the bracket assembly 7; a sewage outlet 18 is provided at the bottom of the cylinder body 11, and a sewage outlet plug 20 is provided at the bottom of the sewage outlet 18. When sewage discharge is required, the sewage outlet plug 20 is rotated to open or close the sewage outlet, thereby controlling the discharge of gas or liquid in the buffer tank.

[0035] More specifically, the bracket assembly 7 includes a backing plate 701, a cover plate 703, a fixing block 704 and a bracket plate 705. One end of the electric wrench 8 is key-connected to the fixing block 704, and the other end is connected to the cable 6 to provide power drive for the electric wrench 8. Corresponding internal threaded holes are provided on the bracket plate 705, and it is welded to the backing plate 701. The fixing block 704, the bracket plate 705 and the cover plate 703 are connected together by bolts 702 to form an electric wrench bracket structure that is convenient for disassembly; a cable connector 19 is provided in the sewage outlet 18 to facilitate the safe and reliable connection of the cable 6 to the inside of the buffer tank.

[0036] Secondly, transmission screws 9 are connected to both ends of the second head 10 by threads. The transmission screws 9 are connected to the electric wrench. By rotating the transmission screws 9, the position of the second head 10 is changed, and thus the volumes of the first working chamber and the second working chamber are adjusted.

[0037] More specifically, the drive screw 9 is key-connected or thread-connected to the electric wrench 8. By rotating the electric wrench 8, the drive screw 9 is driven to rotate, thereby driving the second head 10 to move along the trapezoidal thread of the drive screw 9, changing the volume sizes of the first working chamber 21 and the second working chamber 22. At the same time, the position of the filter tube is detected through the sewage outlet 18 to ensure that the adjusted volume distribution reaches the optimal effect.

[0038] During the on-site trial operation and commissioning process of the compressor, after confirming safety, the cable joint in the sewage outlet is used to supply power to the electric wrench. Under the actions of components such as the electric wrench, electric wrench bracket, drive screw, mating threads on the head, support plate, support ring, and filter tube installed in the buffer tank, the position of the filter tube is detected in cooperation with the sewage outlet, so as to adjust the volume distribution of part of the working chamber of the buffer tank without disassembling the container, and the optimal volume distribution method of the buffer working chamber can be quickly found during the on-site trial operation. This method is also applicable to the on-site disposal measures for excessive vibration after the on-site trial operation in occasions with high requirements for pipeline vibration control. And after the commissioning is completed, this structure can also choose to disassemble the electric wrench and the drive screw using special tools, then replace the electric wrench with a matching part and install it on the drive screw, and then install it in the buffer tank, so as to realize the recycling of the electric wrench and the cable and the simplification of the internal components of the buffer tank, increasing the reliability.

[0039] Embodiment 3:

[0040] In order to make the internal structure of the exhaust buffer tank more stable, this embodiment is further optimized on the basis of Embodiment 1. Specifically:

[0041] A support ring 4 and a support plate 5 are provided. There is a clearance fit between the support ring 4 and the filter tube. The support ring 4 and the support plate 5 are connected by fillet welds. The support plate 5 and the cylinder body 11 are connected by fillet welds. The second head 10 and the first filter tube 3 and the second filter tube 17 are connected by fillet welds. The third head 14 and the support ring 4 are connected by fillet welds. The first filter tube 3 and the second filter tube 17 are locked by a connecting plate 12. The connecting plate 12 and the first filter tube 3 and the second filter tube 17 are connected by fillet welds, further enhancing the support and stability of the filter tube.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A piston compressor exhaust buffer tank, comprising a cylinder body (11), characterized in that, At both ends of the cylinder body (11), a first head (2) and a fourth head (16) are provided, which together with the cylinder body (11) form a cylindrical tank with a cavity. A first filter pipe (3) and a second filter pipe (17) are fixedly connected inside the cylinder body (11). The filter pipes are hollow straight steel pipes with openings at both ends. A second head (10) and a third head (14) are arranged inside the cylinder body (11). The second head (10) and the third head (14) divide the inside of the cylinder body (11) into a first working chamber (21), a second working chamber (22) and a third working chamber (23). The first filter pipe (3) communicates the first working chamber (21) and the second working chamber (22) inside the cylinder body (11). The second filter pipe (17) traverses the three working chambers inside the cylinder body (11) to communicate the first working chamber (21) and the third working chamber (23). A first air inlet (13) and a second air inlet (15) are provided at the top of the cylinder body (11). The first air inlet (13) communicates with the second working chamber (22). The second air inlet (15) communicates with the third working chamber (23). An exhaust port (1) is provided on one side of the cylinder body (11). A bracket assembly (7) is welded to the inner wall of the cylinder body (11). An electric wrench (8) is fixed on the bracket assembly (7).

2. The piston compressor exhaust buffer tank according to claim 1, characterized in that, The bracket assembly (7) includes a backing plate (701), a cover plate (703), a fixing block (704) and a bracket plate (705). The electric wrench (8) is key-connected to the fixing block (704). Corresponding internal threaded holes are provided on the bracket plate (705) and it is welded to the backing plate (701). The fixing block (704) is connected to the bracket plate (705) and the cover plate (703) together by bolts (702) to form an electric wrench bracket structure that is convenient for disassembly.

3. The piston compressor exhaust buffer tank according to claim 1, characterized in that, A sewage outlet (18) is provided at the bottom of the cylinder body (11). A sewage outlet plug (20) is provided at the bottom of the sewage outlet (18).

4. The piston compressor exhaust buffer tank according to claim 3, characterized in that, A cable (6) is connected to one side of the electric wrench (8) to provide power drive for the electric wrench (8). A cable connector (19) is provided inside the sewage outlet (18) to facilitate the safe and reliable connection of the cable (6) to the inside of the buffer tank.

5. The piston compressor exhaust buffer tank according to claim 1, characterized in that Both ends of the second head (10) are connected by threads to a transmission screw rod (9). The transmission screw rod (9) is connected to the electric wrench. By rotating the transmission screw rod (9), the position of the second head (10) is changed, thereby adjusting the volume of the first working chamber and the second working chamber.

6. The piston compressor exhaust buffer tank according to claim 5, characterized in that, The transmission screw rod (9) is key-connected or thread-connected to the electric wrench (8).

7. The piston compressor exhaust buffer tank according to claim 1, characterized in that, It also includes a support ring (4) and a support plate (5). There is a clearance fit between the support ring (4) and the filter pipe. The support ring (4) and the support plate (5) are connected by fillet welds. The support plate (5) and the cylinder body (11) are connected by fillet welds.

8. The piston compressor exhaust buffer tank according to claim 1, characterized in that, The first filter pipe (3) and the second filter pipe (17) are locked by a connecting plate (12) to further enhance the support and stability of the filter pipes.

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