Manual turning gear of PCL type centrifugal compressor

Abstract

The utility model relates to a manual turning gear of a PCL type centrifugal compressor. The device comprises two length adjusting connecting rods, a fulcrum hinge piece connected with the two length adjusting rods and a force arm cylinder installed at the tail ends of the length adjusting connecting rods, the two length adjusting rods are rotationally installed together through the fulcrum hinge piece, a disc inserting frame is fixedly installed at the bottom end of the force arm cylinder, and the disc inserting frame is connected with the fulcrum hinge piece. A disc sliding hole is formed in the disc inserting frame, an inserting limiting column is slidably inserted in the disc sliding hole, a blocking ring and a semi-ring disc are fixedly installed at the two ends of the inserting limiting column respectively, and a disc pressing spring is installed on the portion, between the semi-ring disc and the disc inserting frame, of the inserting limiting column in a sleeving mode. Rod bodies of the two length adjusting connecting rods are each provided with a return spring frame. According to the utility model, the coupler is pressed and rotated in one direction, manual barring is realized, the purpose of saving labor is achieved through a force arm of an insertion structure, and springs on two sides are adopted for pressing, so that the manual barring device is applicable to couplings with different widths.

Description

Technical Field

[0001] The utility model relates to a manual turning device for a PCL type centrifugal compressor. Background Art

[0002] The centrifugal compressor is composed of a rotor, a stator and bearings, etc. The impeller and other parts are sleeved on the main shaft to form the rotor. The rotor is supported on the bearings and driven by the power machine to rotate at high speed. The power machine is connected to the rotor through a coupling. When turning the gear, the coupling at the connection between the centrifugal compressor and the power mechanism is usually rotated to realize the rotation of the turning gear. The Chinese utility model patent, application number 202021372145.1 discloses a turning device for a turbine compressor turning system, which presses the coupling through an arc sleeve structure, and its clamping parts are clamped on the convex parts at both ends of the coupling. However, the bolt convex parts on both sides of the existing PCL centrifugal compressor coupling are trapped in the grooves on both sides, and the clamping parts cannot directly enter the groove to clamp and rotate the convex parts, and the clamping parts have a certain blocking device for the coupling during the rotation process. Summary of the invention

[0003] The utility model aims to provide a manual cranking device for a PCL type centrifugal compressor which has the advantages of simple structure, labor-saving operation and good cranking connectivity.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The manual winching device of a PCL type centrifugal compressor comprises two length-adjusting connecting rods, a fulcrum hinge connecting the two length-adjusting connecting rods, and a force arm cylinder installed at the end of the length-adjusting connecting rods. The two length-adjusting connecting rods are rotatably installed together through the fulcrum hinge, a disk insertion frame is fixedly installed at the bottom end of the force arm cylinder, a disk sliding hole is opened on the disk insertion frame, an insertion limit column is slidably inserted in the disk sliding hole, a retaining ring and a semi-ring disk are fixedly installed at both ends of the insertion limit column, a disk pressure spring is sleeved and installed on the insertion limit column between the semi-ring disk and the disk insertion frame, a pull-back spring frame is installed on the rod body of the two length-adjusting connecting rods, a pull-back spring is connected and installed between the two pull-back spring frames, and a plurality of evenly arranged arc-shaped clamping strips are installed on the inner ring surface of the semi-ring disk.

[0006] Furthermore, a plurality of ball embedding grooves are provided on the side disk surface of the semi-ring disk, and sliding-aiding balls are installed in the ball embedding grooves.

[0007] Furthermore, the length adjustment connecting rod is composed of a length adjustment sleeve and a length adjustment rod inserted at one end of the length adjustment sleeve, a plurality of length adjustment holes are opened on the length adjustment rod, and a length fixing bolt is screwed on the length adjustment sleeve.

[0008] Furthermore, a force arm insertion rod is slidably inserted into the top end of the force arm tube, and a rod insertion stopper is fixedly installed on the top end of the force arm insertion rod.

[0009] Furthermore, the bottom end of the force arm tube is fixedly mounted to the disk insertion frame via a disk insertion frame fixing bolt.

[0010] Beneficial effects of the utility model

[0011] The utility model can press and unidirectionally rotate both sides of couplings at the connection of various centrifugal compressors, saves effort through the force arm of the plug-in structure, and facilitates the use of couplings of different widths through the spring pressing on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 An enlarged schematic diagram of the pressing fulcrum portion;

[0014] Figure 3 It is a schematic diagram of the structure of a semi-ring disk.

[0015] The following are the descriptions of the reference numerals:

[0016] 1. Length adjustment connecting rod; 2. Force arm cylinder; 3. Fulcrum hinge; 4. Disc insertion frame; 5. Semi-ring disc; 6. Insertion limit column; 7. Disc pressure spring; 8. Sliding ball; 9. Stop ring; 10. Force arm insertion rod; 11. Insert rod stopper; 12. Length adjustment sleeve; 13. Length adjustment insertion rod; 14. Length fixing bolt; 15. Pullback spring frame; 16. Pullback spring; 17. Arc-shaped clamping strip; 18. Disc insertion frame fixing bolt. DETAILED DESCRIPTION

[0017] As shown in the figure, the utility model comprises two length-adjusting connecting rods 1, a fulcrum hinge 3 connecting the two length-adjusting connecting rods 1, and a force arm tube 2 installed at the end of the length-adjusting connecting rod 1; wherein the two length-adjusting connecting rods 1 are rotatably installed together through the fulcrum hinge 3, a disk insertion frame 4 is fixedly installed at the bottom end of the force arm tube 2, a disk sliding hole is opened on the disk insertion frame 4, an insertion limit column 6 is slidably inserted in the disk sliding hole, a retaining ring 9 and a semi-ring disk 5 are fixedly installed at both ends of the insertion limit column 6, and two groups of semi-ring disks 5 are symmetrically arranged, both of which are arranged between the two disk insertion frames 4, and the semi-ring disk 5 and the disk insertion frame 4 are fixedly installed. A disc pressure spring 7 is sleeved and installed on the inserted limit column 6, and the disc pressure spring 7 presses the semi-ring disc 5 to press the two sides of the coupling at the power connection of the centrifugal compressor; a pull-back spring frame 15 is installed on the rod body of the two length-adjusting connecting rods 1, and a pull-back spring 16 is connected and installed between the two pull-back spring frames 15, so that the two semi-ring discs 5 can clamp the two ends of the coupling; a number of evenly arranged arc-shaped clamping strips 17 are installed on the inner ring surface of the semi-ring disc 5, and the arc-shaped clamping strips 17 have a certain curvature, and the arc bend is used to clamp the bolt protrusions on both sides of the coupling, and the outer arc side is convenient for crossing the bolt protrusions when the semi-ring disc 5 rotates in the opposite direction.

[0018] The utility model also provides the following optimized structures:

[0019] A plurality of ball embedding grooves are provided on the side disk surface of the semi-ring disk 5, and the sliding-aiding balls 8 are installed in the ball embedding grooves.

[0020] The length adjustment connecting rod 1 consists of a length adjustment sleeve 12 and a length adjustment rod 13 inserted at one end of the length adjustment sleeve 12. The length adjustment rod 13 is provided with a plurality of length adjustment holes. A length fixing bolt 14 is screwed onto the length adjustment sleeve 12, and the end of the length fixing bolt 14 extends into any of the length adjustment holes.

[0021] A lever arm inserting rod 10 is slidably inserted into the top end of the lever arm tube 2 , and a rod inserting rod stopper 11 is fixedly installed on the top end of the lever arm inserting rod 10 .

[0022] The bottom end of the lever arm tube 2 is fixedly mounted with the disk inserting frame 4 by the disk inserting frame fixing bolts 18 , and the bottom component can be replaced by disassembling the disk inserting frame fixing bolts 18 .

[0023] During operation, two hands respectively grasp the two force arm tubes 2 and press them inwards, so that the two disk insertion frames 4 at the bottom are stretched open, so that the two semi-ring disks 5 are respectively pressed onto the two sides of the coupling. Even if there are grooves on both sides, the semi-ring disks 5 will be pressed into the grooves, and clamped to the bolt protrusions of the coupling through the arc-shaped clamping strips 17. Then the force arm insertion rod 10 is pulled out to extend the force arm and swing at a certain angle, thereby driving the coupling to rotate and realizing the winching of the centrifugal compressor. The arc-shaped clamping strip 17 has a certain curvature, which can achieve the effect of one-way clamping. When the semi-ring disk 5 swings in the opposite direction, it does not affect the rotation of the coupling, thereby improving the continuity of the winching rotation.

Claims

1. A manual turning device for a PCL type centrifugal compressor, characterized in that The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, and the plurality of springs are connected to each other by a plurality of springs, and the plurality of springs are connected to each other by a plurality of springs.

2. The manual turning device of the PCL type centrifugal compressor according to claim 1 is characterized in that A plurality of ball embedding grooves are provided on the side disk surface of the semi-ring disk, and sliding-aiding balls are installed in the ball embedding grooves.

3. The manual turning device of the PCL type centrifugal compressor according to claim 1 is characterized in that The length adjustment connecting rod is composed of a length adjustment sleeve and a length adjustment rod inserted at one end of the length adjustment sleeve. The length adjustment rod is provided with a plurality of length adjustment holes, and a length fixing bolt is screwed onto the length adjustment sleeve.

4. The manual turning device of the PCL type centrifugal compressor according to claim 1 is characterized in that A force arm insertion rod is slidably inserted at the top end of the force arm cylinder, and a rod insertion stopper is fixedly installed at the top end of the force arm insertion rod.

5. The manual turning device of the PCL type centrifugal compressor according to claim 1 is characterized in that The bottom end of the force arm tube is fixedly installed with the disk insertion frame through the disk insertion frame fixing bolts.

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