Hydraulic auxiliary roller supporting device

Abstract

The utility model provides a hydraulic auxiliary roller supporting device. The hydraulic auxiliary roller supporting device comprises a roller assembly, a first connecting piece and a second connecting piece. The bottom of the second connecting piece is provided with a first groove, and the top is fixedly connected with the compressor inner cylinder; the top of the first connecting piece is provided with a first boss, and the first boss is inserted into the first groove in a sealed mode to form a hydraulic cavity; the second connecting piece is further provided with a hydraulic oil inlet, and the hydraulic oil inlet is communicated with the hydraulic cavity. The rolling wheel assembly is connected with the bottom of the first connecting piece and used for rolling on the inner cylinder propelling track. According to the hydraulic auxiliary roller supporting device, concentric continuous distance adjustment of the inner cylinder and the outer cylinder of the high-pressure centrifugal compressor can be achieved.

Description

Technical Field

[0001] This application relates to the field of disassembly and assembly of centrifugal compressors, and particularly to a hydraulic-assisted roller support device. Background Art

[0002] A high-pressure centrifugal compressor is a device that does work on gas by the high-speed rotation of an impeller, enabling the gas to obtain kinetic energy and pressure energy, and is widely used in industrial production. It usually adopts a cylindrical structure, which is divided into an inner cylinder and an outer cylinder. The installation of the inner cylinder is usually carried out by axially inserting it into the outer cylinder. To prevent internal gas leakage, a sealing ring is usually provided between the inner and outer cylinders. Therefore, during the installation process of the inner and outer cylinders, they need to be kept concentric, otherwise the sealing ring may be over-extruded and broken.

[0003] Currently, when disassembling and assembling the inner and outer cylinders, a roller support device is usually used. During use, gaskets need to be added or removed between the roller support device and the inner cylinder to adjust the height of the inner cylinder. During the assembly process of the inner and outer cylinders, due to the large weight of the inner cylinder, when measuring the concentricity, space measurement and removal of the support rollers are required, thus continuous adjustment cannot be achieved. Moreover, it is inherently difficult to measure the concentricity of the inner and outer cylinders in space. If, during the pushing process, it is almost impossible to adjust the height of the inner cylinder with gaskets while maintaining concentricity, so the above method is usually inserted under eccentric conditions in actual operations, which easily leads to poor sealing effects and, in addition, the sealing ring breaks due to over-extrusion. Utility Model Content

[0004] In view of the above problems, this application provides a hydraulic-assisted roller support device that can achieve continuous distance adjustment of the concentricity of the inner and outer cylinders of a high-pressure centrifugal compressor.

[0005] To achieve the purpose of this application, the following technical solutions are provided in this application:

[0006] This application provides a hydraulic-assisted roller support device, including: a roller assembly, a first connecting member, and a second connecting member;

[0007] The bottom of the second connecting member has a first groove, and the top is fixedly connected to the inner cylinder of the compressor;

[0008] The top of the first connecting member has a first boss, and the first boss is hermetically inserted into the first groove to form a hydraulic cavity;

[0009] The second connecting member also has a hydraulic oil inlet, and the hydraulic oil inlet is communicated with the hydraulic cavity;

[0010] The roller assembly is connected to the bottom of the first connecting member and is used to roll on the inner cylinder propulsion track.

[0011] In a possible implementation, the hydraulic auxiliary roller support device further includes: a limit bolt; the limit bolt passes through the first connecting member and the second connecting member, the bottom is fixedly connected to the first connecting member, and the middle is slidably connected to the second connecting member.

[0012] In a possible implementation, the top of the first boss has a sealing assembly.

[0013] In a possible implementation, the sealing assembly is a rubber sealing plug.

[0014] In a possible implementation, the roller assembly includes: a pin shaft and a roller; the roller is rotatably connected to the bottom of the first connecting member through the pin shaft.

[0015] In a possible implementation, the bottom of the first connecting member has a second groove, the pin shaft is fixedly passed through the first connecting member and passes through the second groove; the roller is arranged inside the second groove, and the pin shaft passes through the center of the roller so that the roller is rotatably arranged on the pin shaft.

[0016] In a possible implementation, the top of the second connecting member is fixedly connected to the bottom of the compressor inner cylinder through a connecting bolt.

[0017] Beneficial effects:

[0018] Through a hydraulic auxiliary roller support device provided by the present application, during the installation and disassembly of the inner and outer cylinders of a high-pressure centrifugal compressor, in cooperation with a dial indicator, continuous adjustment of the concentricity between the inner cylinder and the outer cylinder can be achieved, reducing the friction between the inner and outer cylinders, ensuring the complete installation and disassembly of the sealing ring, thereby ensuring the sealing performance, and avoiding problems such as poor sealing effect and sealing ring fracture caused by squeezing in the eccentric situation. Description of the drawings

[0019] The drawings are used to provide a further understanding of the present application, and form a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application;

[0020] Figure 1 It is a schematic structural diagram of a hydraulic auxiliary roller support device provided by an embodiment of the present application.

[0021] Reference numerals:

[0022] 1 - roller; 2 - pin shaft; 3 - roller bracket; 4 - connecting bracket; 5 - hydraulic oil inlet; 6 - limit bolt; 7 - connecting bolt. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following will clearly and completely describe the technical solutions in this application in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0024] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0025] Embodiment 1

[0026] Figure 1 A hydraulic-assisted roller support device provided for an embodiment of this application includes: a roller assembly, a first connecting member 3, and a second connecting member 4;

[0027] The bottom of the second connecting member 4 has a first groove, and the top is fixedly connected to the inner cylinder of the compressor;

[0028] The top of the first connecting member 3 has a first boss, and the first boss is sealingly inserted into the first groove to form a hydraulic cavity;

[0029] The second connecting member 4 also has a hydraulic oil inlet 5, and the hydraulic oil inlet 5 communicates with the hydraulic cavity;

[0030] The roller assembly is connected to the bottom of the first connecting member 3 and is used for rolling on the inner cylinder propulsion track.

[0031] Optionally, the first groove is cylindrical, the first boss is also cylindrical, the diameter of the first boss is slightly smaller than that of the first groove, and the two are sealingly inserted and connected.

[0032] Optionally, the roller assembly is any one of a single-roller assembly, a double-roller assembly, and a multi-roller assembly.

[0033] Optionally, when the first connecting member 3 and the second connecting member 4 are engaged, the inner cylinder is in the lowest position.

[0034] In a possible implementation manner, the hydraulic-assisted roller support device further includes: a limit bolt 6; the limit bolt 6 passes through the first connecting member 3 and the second connecting member 4, the bottom is fixedly connected to the first connecting member 3, and the middle is slidably connected to the second connecting member 4.

[0035] Optionally, the bottom of the limit bolt 6 is fixedly connected to the top of the first connecting member 3 by a thread, and the middle surface is smooth and slidably connected to the second connecting member 4.

[0036] Among them, the limit bolt 6 can also ensure that the roller 1 will not fall off when derailed.

[0037] In a possible implementation manner, a sealing assembly is provided at the top of the first boss.

[0038] Optionally, the sealing assembly is fixedly connected to the top surface of the first boss, fixedly connected to the side wall of the first boss, sleeved on the first boss, or any one or more of them.

[0039] In a possible implementation manner, the sealing assembly is a rubber sealing plug.

[0040] Optionally, the rubber sealing plug is fixedly arranged at the top of the first boss, and the side wall of the rubber sealing plug has an elastic sealing strip for ensuring the sealed connection of the rubber sealing plug.

[0041] In a possible implementation manner, the roller assembly includes a pin shaft 2 and a roller 1; the roller 1 is rotatably connected to the bottom of the first connecting member 3 through the pin shaft 2.

[0042] In a possible implementation manner, the bottom of the first connecting member 3 has a second groove, the pin shaft 2 is fixedly inserted through the first connecting member 3 and passes through the second groove; the roller 1 is arranged inside the second groove, and the pin shaft 2 passes through the center of the roller 1, so that the roller 1 is rotatably arranged on the pin shaft 2.

[0043] In a possible implementation manner, the top of the second connecting member 4 is fixedly connected to the bottom of the compressor inner cylinder through a connecting bolt 7.

[0044] Working principle:

[0045] When installing the inner cylinder and the outer cylinder of the compressor, the hydraulic auxiliary roller support device in this application is fixedly installed at the bottom of the inner cylinder through the connecting bolt 7. When lifting the inner cylinder, the connecting bolt 7 and the limit bolt 6 provide support force, so that the roller assembly, the first connecting member 3, the second connecting member 4 and the inner cylinder are lifted together.

[0046] Place the inner cylinder on the track, and the roller 1 can roll along the track, thereby driving the inner cylinder to move; after adjusting the inner cylinder and the outer cylinder to the concentric position, use a pressure pump to transport hydraulic oil into the hydraulic cavity through the hydraulic oil inlet 5, lift the inner cylinder through the hydraulic oil, and then obtain the adjusted value through a dial indicator, so as to realize the accurate and continuous adjustment of the concentricity between the inner cylinder and the outer cylinder.

[0047] In several embodiments provided by the present application, it should be understood that the disclosed systems, modules, and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be an indirect coupling or communication connection through some interfaces, modules, or units, and can be in electrical, mechanical, or other forms.

[0048] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit it. The present application is not limited to the exact structures already described and illustrated in the drawings, and it cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application belongs, without departing from the concept of the present application, various changes and deformations made should be regarded as belonging to the protection scope of the present application.

Claims

1. A hydraulic auxiliary roller support device, characterized in that: include: A roller assembly, a first connecting member (3), and a second connecting member (4); The second connecting member (4) has a first groove at the bottom and a fixed connection with the inner cylinder of the compressor at the top; The top of the first connecting member (3) is provided with a first boss, and the first boss is sealingly inserted into the first groove to form a hydraulic cavity; The second connecting member (4) also has a hydraulic oil inlet (5), and the hydraulic oil inlet (5) is connected to the hydraulic chamber; The roller assembly is connected to the bottom of the first connecting member (3) and is used for rolling on the inner cylinder propulsion track.

2. The hydraulically assisted roller support device according to claim 1, characterized in that: Also includes: A limiting bolt (6); the limiting bolt (6) is passed through the first connecting member (3) and the second connecting member (4), the bottom of the limiting bolt is fixedly connected to the first connecting member (3), and the middle of the limiting bolt is slidably connected to the second connecting member (4).

3. The hydraulic auxiliary roller support device according to claim 1, characterized in that: A sealing component is provided on the top of the first boss.

4. The hydraulically assisted roller support device according to claim 3, characterized in that: The sealing component is a rubber sealing plug.

5. The hydraulic auxiliary roller support device according to claim 1, characterized in that: The roller assembly comprises: a pin shaft (2) and a roller (1); the roller (1) is rotatably connected to the bottom of the first connecting member (3) via the pin shaft (2).

6. The hydraulic auxiliary roller support device according to claim 5, characterized in that: The first connecting member (3) has a second groove at the bottom, the pin shaft (2) is fixedly arranged on the first connecting member (3) and passes through the second groove; the roller (1) is arranged inside the second groove, the pin shaft (2) passes through the center of the roller (1), so that the roller (1) is rotatably arranged on the pin shaft (2).

7. The hydraulically assisted roller support device according to claim 1, characterized in that: The top of the second connecting member (4) is fixedly connected to the bottom of the compressor inner cylinder via a connecting bolt (7).

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