阅读说明：本技术 一种大型往复式压缩机气阀拆装工具 (Dismounting tool for air valve of large reciprocating compressor ) 是由 胡勇政 朱宁宁 于 2020-03-21 设计创作，主要内容包括：本发明公开了一种大型往复式压缩机气阀拆装工具,其主要包括滑块、滑杆、托盘(5)、定位销、旋转销、支架、底座(21)等部件；新型工具主要解决了大型往复式压缩机底部气阀不容易安装的问题,提高了气阀拆装速度,具有气阀升降速度快、性能可靠等优点。(The invention discloses a dismounting tool for a large reciprocating compressor air valve, which mainly comprises a slide block, a slide rod, a tray (5), a positioning pin, a rotating pin, a bracket, a base (21) and other parts; the novel tool mainly solves the problem that the air valve at the bottom of the large reciprocating compressor is not easy to install, improves the disassembly and assembly speed of the air valve, and has the advantages of high lifting speed of the air valve, reliable performance and the like.)

1. The utility model provides a large-scale reciprocating compressor pneumatic valve assembly and disassembly tools, the novel pneumatic valve assembly and disassembly tools of its characterized in that includes: the device comprises a first sliding block (1), a second sliding block (12), a third sliding block (36), a fourth sliding block (37), a first sliding rod (15), a second sliding rod (40), a tray (5), a first positioning pin (22), a first rotating pin (3), a second rotating pin (14), a third rotating pin (8), a fourth rotating pin (16), a fifth rotating pin (6), a sixth rotating pin (42), a seventh rotating pin (43), an eighth rotating pin (44), a ninth rotating pin (45), a tenth rotating pin (46), a first support (4), a second support (7), a third support (47), a fourth support (48), a fifth sliding block (9), a sixth sliding block (17), a seventh sliding block (38), an eighth sliding block (39), a third sliding rod (11), a fourth sliding rod (41), a rotating shaft (19) and a base (21); the second sliding rod (40) and the first sliding rod (15) are respectively connected with two sides of the tray (5); wherein the third slide block (36) and the fourth slide block (37) are sleeved on the second slide bar (40); the first sliding block (1) and the second sliding block (12) are sleeved on the first sliding rod (15); a round hole is arranged at the central position of the tray (5), and a first positioning pin (22) is fixed on the tray (5); the first bracket (4) and the second bracket (7) are in cross connection through a fifth rotating pin (6); one end of the first bracket (4) is connected with the first sliding block (1) through a first rotating pin (3); the other end of the first bracket (4) is connected with a sixth sliding block (17) through a fourth rotating pin (16); one end of the second bracket (7) is connected with the second sliding block (12) through a second rotating pin (14), and the other end of the second bracket (7) is connected with the fifth sliding block (9) through a third rotating pin (8); the third bracket (47) and the fourth bracket (48) are cross-connected by a tenth rotation pin (46); one end of the fourth bracket (48) is connected with the third slide block (36) through a sixth rotating pin (42); the other end of the fourth bracket (48) is connected with the eighth sliding block (39) through a ninth rotating pin (45); one end of the third bracket (47) is connected with a seventh rotating pin (43) of the fourth sliding block (37); the other end of the third bracket (47) is connected with the seventh sliding block (38) through an eighth rotating pin (44); the third bracket (47) and the fourth bracket (48) are cross-connected by a tenth rotation pin (46); the fourth sliding rod (41) and the third sliding rod (11) are connected with two sides of the support plate (49); the seventh sliding block (38) and the eighth sliding block (39) are sleeved on the fourth sliding rod (41); a fifth sliding block (9) and a sixth sliding block (17) are sleeved on the third sliding rod (11); one end of the first connecting rod (26) is connected with the seventh sliding block (38), the other end of the first connecting rod (26) is connected with the fifth sliding block (9), and a positioning ring (28) is fixed in the middle of the first connecting rod (26); one end of the second connecting rod (34) is connected with the eighth sliding block (39), the other end of the second connecting rod (34) is connected with the sixth sliding block (17), and a screw cap (33) is fixed in the middle of the second connecting rod (34); the positioning ring (28) is connected with the screw cap (33) through a screw rod (32), and a ninth stop block (27) is fixed on the top of the screw rod (32) penetrating through the positioning ring (28); the screw rod (32) is connected with the screw cap (33) through threads; the support plate (49) is connected with one end of the rotating shaft (19), the other end of the rotating shaft (19) is connected with the inner ring of the bearing (20), and the outer ring of the bearing (20) is connected with the base (21).

2. The disassembly and assembly tool for the air valve of the large reciprocating compressor according to claim 1, wherein: the fifth rotating pin (6) is positioned on the upper center of the first bracket (4) and the second bracket (7).

3. The disassembly and assembly tool for the air valve of the large reciprocating compressor according to claim 1, wherein: the tenth rotation pin (46) is located at a position off-center of the third bracket (47) and the fourth bracket (48).

4. The disassembly and assembly tool for the air valve of the large reciprocating compressor according to claim 1, wherein: the locating ring (28) is internally unthreaded.

5. The disassembly and assembly tool for the air valve of the large reciprocating compressor according to claim 1, wherein: the number of the first positioning pins (22) is more than or equal to 1.

6. The disassembly and assembly tool for the air valve of the large reciprocating compressor according to claim 1, wherein: the bearing (20) is a cylindrical roller bearing.

Technical Field

The invention belongs to the technical field of auxiliary equipment of air compressors, and particularly relates to a disassembling and assembling tool for an air valve of a large reciprocating compressor.

Background

An air compressor is an important industrial device, and can convert mechanical energy of a motor into pressure energy of gas so as to obtain compressed gas. The air compressors are of various types, and a reciprocating compressor, a centrifugal compressor and the like are common, wherein the reciprocating compressor generally comprises a crankshaft, a cylinder, a piston, an air valve and other parts; the working process can be divided into four processes of expansion, suction, compression and exhaust.

When the piston moves towards the direction of the crankshaft, the volume in the cylinder can be increased, the gas in the cylinder can be expanded continuously, and the pressure can be reduced along with the expansion; when the gas pressure in the cylinder is smaller than the gas pressure in the gas inlet pipe, the gas in the gas inlet pipe pushes away a valve plate of the gas inlet valve to enter the cylinder, and the gas outlet valve is closed at the moment. When the piston moves away from the crankshaft, the volume in the cylinder is reduced, the gas in the cylinder is compressed, and the pressure rises along with the compression; when the pressure of the compressed gas is higher than the pressure of the gas in the outlet pipe, the high-pressure gas in the cylinder pushes away a valve plate of the exhaust valve to enter the exhaust pipe, and the intake valve is closed at the moment. The piston of the reciprocating compressor continuously reciprocates in the cylinder to make the cylinder suck and discharge gas in a reciprocating cycle; the piston reciprocates once to form one work cycle, and the reciprocating compressor completes the work of compressing gas through several work cycles.

With the continuous development of reciprocating compressor technology, petrochemical enterprises increasingly use large-scale reciprocating compressors. The number of air valves on each stage of cylinder body of the compressors is increased, the volume of the air valves is also increased, and the weight of part of the air valves can reach more than 30 kilograms; because the space is limited during installation and maintenance, an operator can only independently complete the operation by one person, and the air valve with huge weight brings huge inconvenience to the carrying and installation; especially when the bottom air valve is installed, the air valve is easy to fall and injure the maintainer due to the fact that the maintainer is not strong, and great potential safety hazards are brought. In the maintenance of large reciprocating compressors, the installation and maintenance of the gas valve become a great problem.

Disclosure of Invention

The invention mainly aims at the problem that the air valve of the large reciprocating compressor is lack of a maintenance tool or unreasonable during installation and maintenance, and provides the disassembly and assembly tool for the air valve of the large reciprocating compressor, which has reasonable design, convenient use, safety and reliability.

The invention relates to a tool for disassembling and assembling an air valve of a large reciprocating compressor, which is characterized in that the novel tool for disassembling and assembling the air valve comprises: the device comprises a first sliding block (1), a second sliding block (12), a third sliding block (36), a fourth sliding block (37), a first sliding rod (15), a second sliding rod (40), a tray (5), a first positioning pin (22), a first rotating pin (3), a second rotating pin (14), a third rotating pin (8), a fourth rotating pin (16), a fifth rotating pin (6), a sixth rotating pin (42), a seventh rotating pin (43), an eighth rotating pin (44), a ninth rotating pin (45), a tenth rotating pin (46), a first support (4), a second support (7), a third support (47), a fourth support (48), a fifth sliding block (9), a sixth sliding block (17), a seventh sliding block (38), an eighth sliding block (39), a third sliding rod (11), a fourth sliding rod (41), a rotating shaft (19) and a base (21); the second sliding rod (40) and the first sliding rod (15) are respectively connected with two sides of the tray (5); wherein the third slide block (36) and the fourth slide block (37) are sleeved on the second slide bar (40); the first sliding block (1) and the second sliding block (12) are sleeved on the first sliding rod (15); a round hole is arranged at the central position of the tray (5), and a first positioning pin (22) is fixed on the tray (5); the first bracket (4) and the second bracket (7) are in cross connection through a fifth rotating pin (6); one end of the first bracket (4) is connected with the first sliding block (1) through a first rotating pin (3); the other end of the first bracket (4) is connected with a sixth sliding block (17) through a fourth rotating pin (16); one end of the second bracket (7) is connected with the second sliding block (12) through a second rotating pin (14), and the other end of the second bracket (7) is connected with the fifth sliding block (9) through a third rotating pin (8); the third bracket (47) and the fourth bracket (48) are cross-connected by a tenth rotation pin (46); one end of the fourth bracket (48) is connected with the third slide block (36) through a sixth rotating pin (42); the other end of the fourth bracket (48) is connected with the eighth sliding block (39) through a ninth rotating pin (45); one end of the third bracket (47) is connected with a seventh rotating pin (43) of the fourth sliding block (37); the other end of the third bracket (47) is connected with the seventh sliding block (38) through an eighth rotating pin (44); the third bracket (47) and the fourth bracket (48) are cross-connected by a tenth rotation pin (46); the fourth sliding rod (41) and the third sliding rod (11) are connected with two sides of the support plate (49); the seventh sliding block (38) and the eighth sliding block (39) are sleeved on the fourth sliding rod (41); a fifth sliding block (9) and a sixth sliding block (17) are sleeved on the third sliding rod (11); one end of the first connecting rod (26) is connected with the seventh sliding block (38), the other end of the first connecting rod (26) is connected with the fifth sliding block (9), and a positioning ring (28) is fixed in the middle of the first connecting rod (26); one end of the second connecting rod (34) is connected with the eighth sliding block (39), the other end of the second connecting rod (34) is connected with the sixth sliding block (17), and a screw cap (33) is fixed in the middle of the second connecting rod (34); the positioning ring (28) is connected with the screw cap (33) through a screw rod (32), and a ninth stop block (27) is fixed on the top of the screw rod (32) penetrating through the positioning ring (28); the screw rod (32) is connected with the screw cap (33) through threads; the support plate (49) is connected with one end of the rotating shaft (19), the other end of the rotating shaft (19) is connected with the inner ring of the bearing (20), and the outer ring of the bearing (20) is connected with the base (21).

The part responsible for supporting the pneumatic valve among the novel pneumatic valve assembly and disassembly tools includes: the device comprises a first sliding block (1), a second sliding block (12), a third sliding block (36), a fourth sliding block (37), a first stop block (2), a second stop block (13), a third stop block (29), a fourth stop block (35), a first sliding rod (15), a second sliding rod (40), a tray (5), a first positioning pin (22), a second positioning pin (23) and a third positioning pin (24). The second sliding rod (40) and the first sliding rod (15) are connected to the two sides of the tray (5) through welding; wherein the third sliding block (36) and the fourth sliding block (37) are sleeved on the second sliding rod (40), and the third sliding block (36) and the fourth sliding block (37) can freely slide on the second sliding rod (40); wherein the first sliding block (1) and the second sliding block (12) are sleeved on the first sliding rod (15), and the first sliding block (1) and the second sliding block (12) can freely slide on the first sliding rod (15); in order to prevent the first sliding block (1) and the second sliding block (12) from falling off from the first sliding rod (15) in the using process, a first stop block (2) and a second stop block (13) are arranged at two ends of the first sliding rod (15); in order to prevent the third sliding block (36) and the fourth sliding block (37) from falling off from the second sliding rod (40) in the using process, a third stop block (29) and a fourth stop block (35) are arranged at two ends of the second sliding rod (40); in order to stably place the air valve on the tray (5), a round hole is arranged at the center of the tray (5), and the convex part of the valve seat of the air valve can pass through the hole; in order to enable the air valve to rotate along with the tray (5) in the process of using the tool, a first positioning pin (22) is fixed on the tray (5) and can enter an annular groove of an air valve seat to play a limiting role.

The part responsible for the pneumatic valve lift among the novel pneumatic valve assembly and disassembly tools includes: the rotary mechanism comprises a first rotary pin (3), a second rotary pin (14), a third rotary pin (8), a fourth rotary pin (16), a fifth rotary pin (6), a sixth rotary pin (42), a seventh rotary pin (43), an eighth rotary pin (44), a ninth rotary pin (45), a tenth rotary pin (46), a first support (4), a second support (7), a third support (47) and a fourth support (48). The first bracket (4) and the second bracket (7) are in cross connection through a fifth rotating pin (6), and the first bracket (4) and the second bracket (7) can rotate; one end of the first bracket (4) is connected with the first sliding block (1) through the first rotating pin (3), and the first bracket (4) and the first sliding block (1) can rotate; the other end of the first bracket (4) is connected with a sixth sliding block (17) through a fourth rotating pin (16), and the first bracket (4) and the sixth sliding block (17) can rotate; one end of the second bracket (7) is connected with the second sliding block (12) through a second rotating pin (14), and the second bracket (7) and the second sliding block (12) can rotate; the other end of the second bracket (7) is connected with the fifth sliding block (9) through a third rotating pin (8), and the second bracket (7) and the fifth sliding block (9) can rotate; the third bracket (47) and the fourth bracket (48) are in cross connection through a tenth rotating pin (46), and the third bracket (47) and the fourth bracket (48) can rotate; one end of the fourth bracket (48) is connected with the third sliding block (36) through a sixth rotating pin (42), and the fourth bracket (48) and the third sliding block (36) can rotate; the other end of the fourth bracket (48) is connected with the eighth sliding block (39) through a ninth rotating pin (45), and the fourth bracket (48) and the eighth sliding block (39) can rotate; one end of the third bracket (47) is connected with the fourth sliding block (37) through a seventh rotating pin (43), and the third bracket (47) and the fourth sliding block (37) can rotate; the other end of the third bracket (47) is connected with the seventh sliding block (38) through an eighth rotating pin (44), the third bracket (47) and the seventh sliding block (38) can rotate, the third bracket (47) and the fourth bracket (48) are in cross connection through a tenth rotating pin (46), and the third bracket (47) and the fourth bracket (48) can rotate. Wherein the fifth rotating pin (6) is positioned on the upper center of the first bracket (4) and the second bracket (7) and is not positioned on the center; the tenth rotating pin (46) is positioned on the upper center of the third bracket (47) and the fourth bracket (48) and is not positioned on the center, the 'scissor difference' design can enable the tray part to be lifted or lowered more efficiently, namely, the height of the tray (5) can be changed greatly by adjusting the screw rod (32) by a small amount.

The part responsible for the pneumatic valve pivoted among the novel pneumatic valve assembly and disassembly tools includes: the sliding mechanism comprises a fifth sliding block (9), a sixth sliding block (17), a seventh sliding block (38), an eighth sliding block (39), a fifth stop block (10), a sixth stop block (18), a seventh stop block (25), an eighth stop block (30), a ninth stop block (27), a third sliding rod (11), a fourth sliding rod (41), a rotating shaft (19), a bearing (20), a base (21), a positioning ring (28), a nut (33), a support plate (49), a screw (32), a first connecting rod (26) and a second connecting rod (34). The fourth sliding rod (41) and the third sliding rod (11) are connected to two sides of the support plate (49) through welding; wherein the seventh sliding block (38) and the eighth sliding block (39) are sleeved on the fourth sliding rod (41), and the seventh sliding block (38) and the eighth sliding block (39) can freely slide on the fourth sliding rod (41); wherein the fifth slider (9) and the sixth slider (17) are sleeved on the third slide bar (11), and the fifth slider (9) and the sixth slider (17) can freely slide on the third slide bar (11); in order to prevent the seventh sliding block (38) and the eighth sliding block (39) from falling off from the fourth sliding rod (41) in the using process, a seventh stop block (25) and an eighth stop block (30) are arranged at two ends of the fourth sliding rod (41); in order to prevent the fifth slide block (9) and the sixth slide block (17) from falling off from the third slide bar (11) in the using process, a fifth stop block (10) and a sixth stop block (18) are arranged at two ends of the third slide bar (11); one end of the first connecting rod (26) is connected with the seventh sliding block (38), the other end of the first connecting rod (26) is connected with the fifth sliding block (9), and the middle of the first connecting rod (26) is connected with the positioning ring (28); one end of a second connecting rod (34) is connected with the eighth sliding block (39), the other end of the second connecting rod (34) is connected with the sixth sliding block (17), and the middle of the second connecting rod (34) is connected with a screw cap (33); the positioning ring (28) is connected with the screw cap (33) through a screw rod (32), the screw rod (32) penetrates through the positioning ring (28), the head of the screw rod is provided with a ninth stopper (27) for preventing the screw rod (32) from falling off from the positioning ring (28), and the positioning ring (28) is not threaded; the screw rod (32) is connected with the nut (33) through threads, and the first connecting rod (26) and the second connecting rod (34) can be close to or far away from each other by rotating the screw rod (32); the motion is transmitted to a third bracket (47) and a second bracket (7) through a seventh sliding block (38) and a fifth sliding block (9) at two ends of a first connecting rod (26); the motion is transmitted to the first bracket (4) and the fourth bracket (48) through an eighth slide block (39) and a sixth slide block (17) at two ends of the second connecting rod (34); finally, the second bracket (7) and the first bracket (4) are rotated, and the third bracket (47) and the fourth bracket (48) are rotated, so that the tray part is lifted or lowered; the support plate (49) is connected with the rotating shaft (19) through welding, the rotating shaft (19) is connected with the inner ring of the bearing (20), and the base (21) is connected with the outer ring of the bearing (20); when the air valve is properly installed, the support plate (49) and the parts above can be integrally rotated, so that the air valve positioning pin enters the positioning groove in the cylinder (during installation) or is separated from the positioning groove in the cylinder (during disassembly).

The invention has the beneficial effects that:

1. the bracket adopts a 'scissors difference' design. The head can be without the jam send into the cylinder with the pneumatic valve steadily in, solved the problem that the pneumatic valve is not good to be transported inside the cylinder.

2. The air valve is lifted by using a thread mode, so that the problem that part of maintainers cannot support the air valve due to overweight can be solved.

3. If the installation space of the air valve at the bottom is narrow, an operator can change the original lying installation method to prevent the air valve from crashing the chest after falling; if the condition is not convenient for evacuation, the harm of harmful gases such as nitrogen and the like is avoided.

Drawings

Fig. 1 is a schematic structural diagram of one side of the novel air valve dismounting tool.

Fig. 2 is a schematic view of the other side of the novel gas valve dismounting tool.

Fig. 3 is a schematic structural diagram of a tray and other parts.

Fig. 4 is a schematic structural diagram of a base and other components.

Detailed Description

The present invention will be further described with reference to the accompanying drawings in conjunction with the use of a large reciprocating compressor valve disassembly tool, but the embodiments are illustrative only and should not be construed as limiting the practice of the invention.

As shown in figure 1, the dismounting tool for the air valve of the large reciprocating compressor is particularly suitable for mounting the bottom air valve of the large reciprocating compressor. When the air valve is installed, firstly, the screw (32) is loosened to enable the tray (5) to descend to a proper position, then the air valve to be installed is placed on the tray (5), and the protruding part of the air valve can pass through the through hole in the tray (5) to be stably placed; the first positioning pin (22), the second positioning pin (23) and the third positioning pin (24) on the tray (5) can enter the annular groove of the air valve seat. Tightening the screw (32) by bringing the first link (26) and the second link (34) closer to each other; thereby driving the fifth slide block (9) and the sixth slide block (17) to slide towards the center on the third slide bar (11), and driving the seventh slide block (38) and the eighth slide block (39) to slide towards the center on the fourth slide bar (41); further enabling the first bracket (4) and the second bracket (7) and the third bracket (47) and the fourth bracket (48) to relatively rotate; further raising the tray (5). When the air valve on the tray (5) is in place inside the compressor cylinder, the bracket part and the tray part can be rotated together. Because the tray (5) is provided with the first positioning pin (22), the second positioning pin (23) and the third positioning pin (24), the tray (5) can drive the air valve to rotate together when rotating, so that the positioning pin on the air valve enters the positioning groove on the air cylinder, and the installation of the air valve is completed. In order to ensure that the air valves with different sizes can rotate together with the tray (5), the tray (5) is provided with a plurality of positioning pins, and the number of the positioning pins is more than or equal to 1; the quantity of locating pin in this design preference is 3, and they are respectively: a first positioning pin (22), a third positioning pin (24) and a second positioning pin (23), which are distributed on the tray (5) in sequence; for the air valve with small size, only the first positioning pin (22) enters the annular groove of the air valve seat, and for the air valve with large size, the first positioning pin (22), the third positioning pin (24) and the second positioning pin (23) enter the annular groove of the air valve seat, so that the air valves with different sizes can be fixed on the tray (5). In order to enable smooth rotation of the carrier part and the tray part, the bearing (20) in this embodiment is preferably a cylindrical roller bearing.

The procedure for installing the valve is the reverse of the valve removal procedure described above, but the principle and tool usage are the same.