Piston type gas compressor unit cooler

Abstract

The utility model provides a cooler for a piston type gas compressor unit, which aims to solve the technical problem of how to cool the piston type gas compressor unit in operation, and is characterized by comprising a double-pipe heat exchanger, the double-pipe heat exchanger comprises an inner pipe and two outer joints, the inner pipes are gas conveying pipes capable of bearing high pressure not larger than 250 MPa, the outer connector of each inner pipe is composed of a pipe connector and a threaded flange, the pipe connector is provided with external threads, the sealing face of the pipe connector is conical, and the threaded flange is installed on the external threads of the pipe connector. Cooling water and high-temperature and high-pressure gas of a unit are subjected to countercurrent flow heat exchange in the device, and heat of the high-temperature and high-pressure gas of the unit is taken out by the cooling water. The utility model has the advantages that: the temperature of the aerostatic press unit during operation is obviously reduced, and the thermodynamic efficiency of the gas compressor is ensured.

Description

Technical Field

[0001] The utility model relates to a cooler, specifically a cooler for cooling a running piston-type gas compressor unit. Background Art

[0002] Piston-type high-pressure gas compressors have been widely used in key fields such as petrochemical industry, gas separation, energy development, and refrigeration industry, becoming the core equipment to support the efficient operation of the modern industrial system. In the process of petrochemical reactions, higher pressures are often required to increase the reaction rate. For example, in the processes of ammonia synthesis, methanol production, and petroleum cracking, high pressure can not only increase the conversion rate of products but also reduce the energy consumption requirements in subsequent process steps. For a gas compressor system, as air or other raw material gases are compressed, their internal energy increases, which in turn leads to a significant increase in gas temperature. Excessive temperature will significantly affect the thermodynamic efficiency of the gas compressor.

[0003] A double-pipe heat exchanger is composed of concentric double pipes connected by two standard pipes of different sizes, including an inner pipe and an outer pipe. Each pipe has two pipe joints, including two outer joints of the inner pipe. Summary of the Invention

[0004] To enable the gas compressor to always maintain the best operating state, the purpose of the utility model is to provide a cooler for a piston-type gas compressor unit.

[0005] The purpose of the utility model is achieved as follows: It includes a double-pipe heat exchanger, which includes an inner pipe and its two outer joints. The inner pipe is a high-pressure gas transmission pipe that can withstand a pressure not greater than 250 MPa. Each outer joint of the inner pipe consists of a pipe joint and a threaded flange. The pipe joint has an external thread, and its sealing surface is conical. The threaded flange is installed on the external thread of the pipe joint.

[0006] During use, the utility model is set at the position of the high-pressure stage exhaust port of the gas compressor unit. The exhaust port and the intake port of the unit each have an outer joint, and the outer joints of the exhaust port and the intake port are the same as the outer joints of the inner pipe. The outer joint of the exhaust port of the unit is docked with the outer joint of the intake end of the inner pipe located at the upper end of the cooler, that is, the two threaded flanges are connected by bolts; the outer joint of the intake port of the unit is docked with the outer joint of the outlet end of the inner pipe located at the lower end of the cooler, that is, the two threaded flanges are connected by bolts; the outer pipe of the utility model is connected to the cooling water set outside the system. The cooling water enters the outer pipe from the lower end of the cooler and flows out from the upper end of the outer pipe. The cooling water and the high-temperature and high-pressure gas of the unit exchange heat in a countercurrent manner in the utility model, and the cooling water takes out the heat of the high-temperature and high-pressure gas of the unit.

[0007] Compared with the prior art, the positive effect of the utility model is that it significantly reduces the temperature during the operation of the gas compressor unit and ensures the thermodynamic efficiency of the gas compressor. Brief Description of the Drawings

[0008] The present utility model will be further described below in conjunction with the drawings.

[0009] Figure 1 It is a schematic diagram of the present utility model.

[0010] Figure 2 is Figure 1 the A-A sectional view of, and also the structural schematic diagram of the outer joint of the inner tube. Detailed Embodiment

[0011] It includes a shell-and-tube heat exchanger 1, the shell-and-tube heat exchanger includes an inner tube 3 and two outer joints 4 at its upper and lower ends, including an intake-end outer joint at the upper end and an exhaust-end outer joint at the lower end. The inner tube 3 is a high-pressure gas pipeline capable of withstanding a pressure not greater than 250 MPa. The outer joint of each inner tube is composed of a pipe joint 41 and a threaded flange 42. The pipe joint 41 has an external thread, and its sealing surface is conical 411 to adapt to high-pressure gas. The threaded flange is installed on the external thread of the pipe joint.

[0012] During use, the present utility model is arranged at the position of the high-pressure stage of the gas compressor unit, such as

[0013] the exhaust port. Each of the exhaust port and the intake port of the unit has an outer joint, and the outer joints of the exhaust port, the intake port are the same as the outer joints of the inner tube. The outer joint of the exhaust port of the unit is docked with the intake-end outer joint 4 of the inner tube at the upper end of the cooler, that is, the two threaded flanges are connected by bolts; the outer joint of the intake port of the unit is docked with the exhaust-end outer joint of the inner tube at the lower end of the cooler, that is, the two threaded flanges are connected by bolts; the outer tube 5 of the present utility model is connected to the cooling water arranged outside the system. The cooling water enters the outer tube from the flange 2 of the outer tube joint at the lower end of the cooler and flows out from the flange 2 of the outer tube joint at the upper end of the cooler. The cooling water and the high-temperature and high-pressure gas of the unit exchange heat in a countercurrent manner in the present utility model, and the cooling water takes out the heat of the high-temperature and high-pressure gas of the unit.

Claims

1. A piston type gas compressor unit cooler, characterized in that: It includes a shell-and-tube heat exchanger, which includes an inner tube and two outer joints thereof. The inner tube is a high-pressure gas transmission pipe that can withstand no more than 250MPa. The outer joints of each inner tube are composed of a pipe joint and a threaded flange. The pipe joint has an outer thread, and its sealing surface is conical. The threaded flange is installed on the outer thread of the pipe joint.

Images