Diaphragm compressor cylinder liner structure

Abstract

The application discloses a diaphragm compressor cylinder sleeve structure, which comprises a plunger sleeve, a plunger, a guide sleeve and a guide mechanism; the plunger sleeve is installed at one end of a cylinder body hole towards a cylinder cover, the guide sleeve is installed at the other end of the cylinder body hole, and a partition plate is further installed between the guide sleeve and the plunger sleeve; the partition plate is provided with a through hole for the plunger body end to penetrate, the T-shaped end of the plunger is located in the guide sleeve, and the plunger body end penetrates the partition plate and extends into the plunger sleeve; the guide mechanism is built in the guide sleeve, one end of the guide mechanism is connected with the plunger, and the other end of the guide mechanism is connected with a cross head assembly. Through the design of the guide mechanism in the guide sleeve, the plunger can be effectively prevented from being broken, the jumping amplitude of the cross head assembly can be reduced, and the service life and compression efficiency of the cylinder sleeve structure are improved.

Description

Technical Field

[0001] This invention relates to the field of compressors, and in particular to a cylinder liner structure for a diaphragm compressor. Background Technology

[0002] An ultra-high pressure hydrogen diaphragm compressor is a machine that uses the reciprocating motion of a piston or diaphragm within a cylinder to cause periodic changes in the cylinder volume, thereby pressurizing and transporting gas. The cylinder liner is a crucial component in the compressor, connecting to the crosshead assembly; its performance and service life directly affect the compressor's performance and lifespan.

[0003] Existing cylinder liner structures are typically cylindrical. In high-pressure or ultra-high-pressure hydrogen diaphragm compressors, the crosshead assembly is directly connected to the plunger. This not only leads to the problem of plunger breakage but also results in large crosshead assembly runout, causing a reduction in compressor compression efficiency and severely hindering the development of ultra-high-pressure hydrogen diaphragm compressors. Summary of the Invention

[0004] This invention provides a cylinder liner structure for a diaphragm compressor, which solves the aforementioned problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a cylinder liner structure for a diaphragm compressor, comprising: a plunger sleeve, a plunger, a guide sleeve, and a guide mechanism; wherein, the plunger sleeve is installed in the cylinder bore at one end facing the cylinder head, the guide sleeve is installed in the other end of the cylinder bore, and a partition plate is installed between the guide sleeve and the plunger sleeve; the partition plate has a through hole for the cylindrical end of the plunger to pass through, the T-shaped end of the plunger is located inside the guide sleeve, and its cylindrical end extends through the partition plate into the plunger sleeve; the guide mechanism is built into the guide sleeve, one end of which is connected to the plunger, and the other end of which is connected to a crosshead assembly.

[0006] In a preferred embodiment of the present invention, the guiding mechanism includes a guide body and a guide shaft; wherein the guide body is located between the plunger and the guide shaft, and the two end faces of the guide body are arc surfaces.

[0007] In a preferred embodiment of the present invention, the guide shaft includes a first horizontal section, a second horizontal section, and a rod section, wherein the first horizontal section faces the guide body, and the two ends of the rod section are respectively connected to the first horizontal section and the second horizontal section to form an "I" shaped structure.

[0008] In a preferred embodiment of the present invention, the surfaces of the first and second horizontal portions on the side away from the rod portion are both arc surfaces.

[0009] In a preferred embodiment of the present invention, the guide mechanism further includes a first pressure cap, a second pressure cap, and a bolt; wherein, the first pressure cap is located between the partition plate and the T-shaped end of the plunger; the second pressure cap is installed between the first horizontal part and the second horizontal part of the guide shaft and is connected to the first horizontal part; one end of the bolt passes through the second pressure cap, the guide body, and the first pressure cap in sequence, and is connected to the first pressure cap.

[0010] In a preferred embodiment of the present invention, the guide mechanism further includes a filler block, wherein the filler block is installed in the region between the guide body, the second pressure cap, the first horizontal part and the guide sleeve, and the bolt passes through the filler block.

[0011] In a preferred embodiment of the present invention, the cylinder liner structure of the diaphragm compressor further includes a plurality of seals, which are installed between the plunger and the plunger sleeve.

[0012] In a preferred embodiment of the present invention, a support ring is further installed between the guide body and the guide sleeve.

[0013] The beneficial effects of this invention are: the cylinder liner structure of the diaphragm compressor cylinder of this invention, through the design of the guide mechanism inside the guide sleeve, on the one hand, utilizes the guide mechanism to connect with the plunger and the crosshead assembly respectively, effectively preventing plunger breakage and improving the service life of the cylinder liner structure; on the other hand, it effectively prevents the runout amplitude of the crosshead assembly, improving the compression efficiency of the diaphragm compressor cylinder, and is highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of a preferred embodiment of the cylinder liner structure of a diaphragm compressor according to the present invention;

[0015] Figure 2 This is a schematic diagram of the plunger shown.

[0016] Figure 3 This is a schematic diagram of the structure of the guide shaft shown.

[0017] The components in the attached diagram are labeled as follows:

[0018] 100. Cylinder block; 110. Cylinder block bore;

[0019] 10. Plunger sleeve; 11. Screw;

[0020] 20. Plunger; 21. Plug end; 22. T-shaped end;

[0021] 30. Guide sleeve;

[0022] 40. Guide mechanism; 41. Guide body; 42. Guide shaft; 43. First pressure cap; 44. Second pressure cap; 45. Bolt; 46. Filler block; 47. Support ring; 421. First horizontal part; 422. Second horizontal part; 423. Rod part;

[0023] 50. Separator; 60. Seal. Detailed Implementation

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1 As shown, the cylinder body 100 of the diaphragm compressor cylinder has a cylinder body hole 110 along its central axial direction. The cylinder liner structure of the diaphragm compressor cylinder designed in this invention is installed in the cylinder body hole 110 of the cylinder body 100.

[0027] Specifically, the cylinder liner structure of the present invention includes: a plunger sleeve 10, a plunger 20, a guide sleeve 30, and a guide mechanism 40. The plunger sleeve 10 is installed in the cylinder block bore 110 at one end facing the cylinder head (not shown), and its end is fixed to the cylinder block 100 by screws 11. The guide sleeve 30 is installed in the other end of the cylinder block bore, and its end is fixed to the cylinder block 100 by fastening bolts. A partition plate 50 is also installed between the guide sleeve 30 and the plunger sleeve 10. The other ends of the guide sleeve 30 and the plunger sleeve 10 are respectively tightly connected to the partition plate 50 to ensure that the plunger sleeve 10 and the guide sleeve 30 are stably installed in the cylinder block bore 110 and do not wobble with the movement of the plunger 20 and the guide mechanism 40.

[0028] like Figure 2 As shown, the plunger 20 has a T-shaped structure, with one end being a cylindrical end 21 and the other end a T-shaped end 22. The partition plate 50 has a through hole in its middle for the cylindrical end of the plunger 20 to pass through. The T-shaped end of the plunger 20 is located inside the guide sleeve 30, and its cylindrical end extends through the partition plate 50 into the plunger sleeve 10. Multiple sealing elements 60 are also sandwiched between the plunger sleeve 10 and the cylindrical end of the plunger 20 to prevent oil leakage. Specifically, the sealing element is an open U-shaped sealing ring.

[0029] The guide mechanism 40 is built into the guide sleeve 30, with one end connected to the plunger 20 and the other end connected to the crosshead assembly. Specifically, the guide mechanism 40 includes a guide body 41, a guide shaft 42, a first pressure cap 43, a second pressure cap 44, and a bolt 45, wherein the guide body 41 is located between the plunger 20 and the guide shaft 42. Figure 3 As shown, the guide shaft 42 includes a first horizontal part 421, a second horizontal part 422, and a rod part 423. The first horizontal part 421 faces the guide body 41, and the two ends of the rod part 423 are respectively connected to the first horizontal part 421 and the second horizontal part 422 to form an "I" shaped structure. The first pressure cap 43 has a through hole in the middle for the cylindrical end of the plunger 20 to pass through. The first pressure cap 43 is located between the partition plate 50 and the T-shaped end of the plunger 20. The second pressure cap 44 is installed between the first horizontal part 421 and the second horizontal part 422 of the guide shaft 42 and is connected to the first horizontal part 421. A filler block 46 is also installed in the area between the guide body 41, the second pressure cap 44, the first horizontal part 421 of the guide shaft 42 and the guide sleeve 30. There are 4 bolts 45, which are symmetrically distributed. One end of each bolt 45 passes through the second pressure cap 44, the filler block 46, the guide body 41 and the first pressure cap 43 in sequence and is connected to the first pressure cap 43, thereby connecting the plunger 20 with the guide body 41 and the guide shaft 42 into a whole, and the whole moves up and down in the space formed by the guide sleeve 30 and the plunger sleeve 10.

[0030] Specifically, both end faces of the guide body 41 are arc surfaces, and the surfaces of the first horizontal portion 421 and the second horizontal portion 422 of the guide shaft 42 away from the rod portion 423 are also arc surfaces. Two support rings 47 arranged vertically are also installed between the guide body 41 and the guide sleeve 30. Through the arc-surface contact between the piston and the guide body, between the guide body and the guide shaft, and between the guide shaft and the crosshead assembly, and the design of the support rings 47, the guide body and the guide shaft can automatically adjust their angles during movement, thereby buffering vibrations and effectively reducing the vibration amplitude of the crosshead assembly connected to the guide shaft, thus reducing crosshead assembly bounce.

[0031] In addition, by setting a guiding mechanism inside the aforementioned guide sleeve, the plunger can be effectively prevented from breaking, thus improving the service life of the cylinder liner structure of the diaphragm compressor.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A cylinder liner structure for a diaphragm compressor, characterized in that, include: A plunger sleeve, a plunger, a guide sleeve, and a guide mechanism are provided. The plunger sleeve is installed in the cylinder block bore at one end facing the cylinder head, and the guide sleeve is installed in the cylinder block bore at the other end. A partition plate is also installed between the guide sleeve and the plunger sleeve. The partition plate has a through hole for the protruding end of the plunger to pass through. The T-shaped end of the plunger is located inside the guide sleeve, and its protruding end extends through the partition plate into the plunger sleeve. The guide mechanism is built into the guide sleeve, with one end connected to the plunger and the other end connected to a crosshead assembly. The guiding mechanism includes a guide body and a guide shaft; wherein, the guide body is located between the plunger and the guide shaft, and the two end faces of the guide body are arc surfaces; The guide shaft includes a first horizontal section, a second horizontal section, and a rod section, wherein the first horizontal section faces the guide body, and the two ends of the rod section are respectively connected to the first horizontal section and the second horizontal section to form an "I" shaped structure; The surfaces of the first and second horizontal sections away from the rod are both arc surfaces. The guiding mechanism further includes a first pressure cap, a second pressure cap, and a bolt; wherein, the first pressure cap is located between the partition plate and the T-shaped end of the plunger; the second pressure cap is installed between the first and second horizontal parts of the guide shaft and is connected to the first horizontal part; one end of the bolt passes through the second pressure cap, the guide body, and the first pressure cap in sequence, and is connected to the first pressure cap. The plunger and guide body, the guide body and guide shaft, and the guide shaft and crosshead assembly are connected by an arc surface.

2. A diaphragm compressor cylinder liner structure according to claim 1, characterized by The guiding mechanism further includes a filler block, wherein the filler block is installed in the area between the guide body, the second pressure cap, the first horizontal part and the guide sleeve, and the bolt passes through the filler block.

3. A diaphragm compressor cylinder liner structure according to claim 1, characterized by The diaphragm compressor cylinder liner structure also includes multiple seals, which are installed between the plunger and the plunger sleeve.

4. The diaphragm compressor cylinder liner structure according to claim 1, characterized by A support ring is also installed between the guide body and the guide sleeve.

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