A novel cylinder for a labyrinth compressor
By designing a labyrinth compressor cylinder with a single-cylinder two-stage structure, and adopting integrated casting and cooling water channel layout, the problems of insufficient strength and poor cooling effect of traditional labyrinth compressor cylinders in multi-stage compression are solved, achieving higher compression efficiency and longer service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG QIANGSHENG COMPRESSOR MFG
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional labyrinth compressor cylinders suffer from insufficient strength, poor cooling, and complex structure in multi-stage compression applications, especially in two-stage compression scenarios where they struggle to meet the requirements of high pressure differentials and temperature variations.
The labyrinth compressor cylinder adopts a single-cylinder two-stage structure and is integrally cast. The cylinder body has cooling water channels distributed on both sides, and diagonal water inlets and outlets are set in key parts. The cylinder wall is thickened to improve strength and is made of QT450-10 ductile iron.
It improves the overall structural strength and cooling effect of the cylinder, reduces connecting parts, lowers manufacturing costs and space occupation, and enhances the operating stability and lifespan of the compressor.
Smart Images

Figure CN224579452U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an improved invention of a labyrinth compressor, and more particularly to an improved invention of a novel cylinder for a labyrinth compressor. Background Technology
[0002] In the design and manufacturing of labyrinth compressors, the cylinder, as one of the core components, undertakes the important functions of gas compression and sealing. Traditional labyrinth compressors typically adopt a "single-stage, single-cylinder" structural design, meaning that each compression stage corresponds to an independent cylinder. This design performs well in single-stage compression, but in multi-stage compression applications, especially in two-stage compression scenarios, there are many technical bottlenecks.
[0003] First, traditional single-cylinder structures are prone to insufficient overall cylinder strength when subjected to high-pressure gas, leading to cylinder deformation or even breakage, affecting the safety and stability of the equipment. Second, due to the complexity of the cylinder structure, using multiple independent cylinders in series not only increases the overall size and weight of the equipment but also raises manufacturing costs and assembly difficulties. Furthermore, traditional cylinders have relatively simple cooling system designs, often failing to achieve uniform cooling of all parts of the cylinder, thus affecting compression efficiency and equipment lifespan.
[0004] Especially during two-stage compression, the cylinder needs to withstand greater pressure differences and temperature changes, thus placing higher demands on the cylinder's structural strength, rigidity, and cooling performance. Existing cylinder structures are insufficient to meet these requirements, necessitating a new type of cylinder for labyrinth compressors to solve these technical problems. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of cylinder for a labyrinth compressor.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The novel labyrinth compressor cylinder includes a cylinder body, characterized in that: the cylinder is a single-cylinder two-stage configuration, and the corresponding cylinder body is integrally cast. The cylinder body is provided with a first-stage cylinder body and a second-stage cylinder body that are spaced apart on the left and right sides. A cooling water channel is formed between the left side of the first-stage cylinder body, the right side of the second-stage cylinder body, and the first-stage cylinder body and the second-stage cylinder body. The cooling water channel is provided with an inlet and an outlet. The left side of the first-stage cylinder body is provided with a first-stage air inlet and a first-stage air outlet that are distributed vertically. The front and rear sides of the second-stage cylinder body are respectively provided with a second-stage air inlet and a second-stage air outlet.
[0007] The center distance between the first-stage cylinder block and the second-stage cylinder block is 700~750mm.
[0008] The inlet of the cooling water channel is located at one corner of the bottom of the cylinder block, and the outlet of the cooling water channel is located at one corner of the top of the cylinder block, with the outlet and inlet being diagonally opposite each other.
[0009] The cylinder wall of the cylinder body is thickened to a thickness of 30-40mm.
[0010] The cylinder body is made of QT450-10 ductile iron.
[0011] The beneficial effects of this utility model are as follows: the improved cylinder for the new labyrinth compressor, by designing the cylinder as a single-cylinder two-stage structure and adopting an integrated casting process, effectively improves the overall structural strength and rigidity of the cylinder. Compared with the traditional multi-cylinder structure, this design reduces the number of connecting parts, avoiding leakage and vibration problems caused by poor sealing or loose structure at the connection. This cylinder integrates the first-stage cylinder body and the second-stage cylinder body into the same cylinder body, using a left-right spacing distribution, making the overall structure more compact and significantly reducing the space occupied by the compressor. At the same time, the integrated structure reduces manufacturing and assembly costs and improves production efficiency. Interconnected cooling water channels are set on the left side of the first-stage cylinder body, the right side of the second-stage cylinder body, and between the two, with diagonally arranged water inlets and outlets. This cooling water channel layout ensures that cooling water flows through the key parts of the entire cylinder, achieving uniform heat dissipation, effectively preventing local overheating, and improving the stability and reliability of compressor operation. Attached Figure Description
[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a cross-sectional view of the structure of this utility model. Detailed Implementation
[0015] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1-2The novel labyrinth compressor cylinder includes a cylinder body 1. The cylinder is a single-cylinder, two-stage design, with the cylinder body 1 integrally cast. The cylinder body 1 contains a primary cylinder body 2 and a secondary cylinder body 3 spaced apart on the left and right sides, respectively. This integrated design enhances the structural strength of the cylinder. A cooling water channel 4 is formed between the left side of the primary cylinder body 2, the right side of the secondary cylinder body 3, and between the primary and secondary cylinder bodies 2 and 3. The cooling water channel 4 is equipped with an inlet and an outlet. The left side of the primary cylinder body 2 has a primary air inlet 5 and a primary air outlet 6 distributed vertically. The front and rear sides of the secondary cylinder body 3 have secondary air inlets 7 and secondary air outlets, respectively. During operation, the primary air outlet 6 connects to the secondary air inlet 7, optimizing and shortening the connection path, reducing pipework layout and space occupation.
[0016] This invention solves the problems of insufficient strength, poor cooling effect, and complex structure of traditional single-stage cylinders in multi-stage compression applications, achieving higher compression efficiency, longer service life, and lower manufacturing cost, and has significant engineering application value and market promotion prospects.
[0017] As a further improved implementation, the center distance between the first-stage cylinder block 2 and the second-stage cylinder block 3 is 700~750mm. This design fully considers the internal space layout of the cylinder and the power transmission path, which helps to balance the force on the cylinder, reduce vibration, and improve the overall running stability.
[0018] As a further improved specific implementation, the inlet of the cooling water channel 4 is located at one corner of the bottom of the cylinder body 1, and the outlet of the cooling water channel 4 is located at one corner of the top of the cylinder body 1. The outlet and the inlet are diagonally opposite each other, which ensures that the cooling water flows through the key parts of the entire cylinder, achieves uniform heat dissipation, effectively prevents local overheating, and improves the stability and reliability of the compressor operation.
[0019] As a further improvement, the cylinder wall of the cylinder body 1 is thickened to 30-40mm, which further enhances the pressure-bearing capacity of the cylinder and is suitable for long-term stable operation under high-pressure conditions.
[0020] As a further improved specific implementation, the cylinder body 1 is made of QT450-10 ductile iron, which has good mechanical strength, wear resistance and casting performance.
[0021] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A new type of labyrinth compressor cylinder comprising a cylinder body, characterized in that: The cylinder is a single-cylinder two-stage configuration, and the corresponding cylinder body is integrally cast. The cylinder body has a first-stage cylinder body and a second-stage cylinder body that are spaced apart on the left and right sides. A cooling water channel is formed between the left side of the first-stage cylinder body, the right side of the second-stage cylinder body, and the first-stage cylinder body and the second-stage cylinder body. The cooling water channel is equipped with a water inlet and a water outlet. The left side of the first-stage cylinder body has a first-stage air inlet and a first-stage air outlet that are distributed vertically. The front and rear sides of the second-stage cylinder body are respectively equipped with a second-stage air inlet and a second-stage air outlet.
2. The new labyrinth compressor cylinder according to claim 1, characterized in that: The center distance between the first-stage cylinder block and the second-stage cylinder block is 700~750mm.
3. The new labyrinth compressor cylinder according to claim 1, characterized in that: The inlet of the cooling water channel is located at one corner of the bottom of the cylinder block, and the outlet of the cooling water channel is located at one corner of the top of the cylinder block, with the outlet and inlet being diagonally opposite each other.
4. The new labyrinth compressor cylinder according to claim 1, characterized in that: The cylinder wall of the cylinder body is thickened to a thickness of 30-40mm.
5. The new labyrinth compressor cylinder as claimed in claim 1, wherein: The cylinder body is made of QT450-10 ductile iron.