CN202431485U - Pipeline system for online oil injection of compressor - Google Patents

Abstract

The utility model discloses a pipeline system for online oil injection of a compressor, which belongs to the technical field of online oil injection for compressors. The pipeline system for online oil injection of compressors of the present utility model includes a compressor, a buffer tank is connected to the bottom of the compressor, an air inlet and a refueling port are arranged on the upper part of the buffer tank, and the bottom of the buffer tank is respectively connected to Oil inlets at both ends of the compressor. The pipeline system for online oil injection of the compressor of the utility model realizes the oil injection without stopping the compressor, improves the oil transportation of the compressor, and reduces the damage caused by poor oil transportation; the method of refueling the membrane head after parking for inspection adopts low-input and high-level Drainage, so as to completely discharge the gas in the membrane head, and do not need to disassemble any valves when filling oil into the compressor membrane head; realize the purpose of being convenient, quick, scientific and reasonable, environmentally friendly and economical, and avoid the adsorption column caused by the damage of the diaphragm of the compressor Backflushing hydrogen cannot be recovered, and at the same time increases environmental protection costs and safety risks.

Description

A piping system for online oil injection of a compressor

technical field

The utility model relates to an online oil injection technology for a compressor, in particular to a pipeline system for online oil injection for a compressor. the

Background technique

Diaphragm compressor is a special positive displacement compressor, which completely separates lubricating oil and compressed gas through a set of diaphragms to ensure that the gas is not polluted. Compared with the commonly used piston compressors, the diaphragm compressor manufactured by American PPI company has many advantages: first, it is well sealed, does not pollute the compressed medium, is easy to maintain, does not need to overhaul the air seal, and is very convenient to replace the diaphragm; second, the compression ratio Large, easy to achieve high pressure. Compact structure, no need for double intermediate isolation chambers and auxiliary lubricating oil station. And it is especially suitable for the environment of flammable, explosive and toxic and harmful media. Therefore, choosing a diaphragm compressor is the best choice for hydrogen boosting. The key component of the diaphragm compressor is the diaphragm, and its reciprocating motion directly acts on the gas to achieve the purpose of compression and transportation. Because the diaphragm material needs to have a high elastic limit and fatigue limit, the diaphragm is mostly imported and expensive, and the diaphragm often breaks during actual use. Once damaged, it will have a great impact on production. the

The existing oil injection method has the following defects:

1. The compressor is refueled during normal operation without affecting the normal operation of the PPI;

2. The membrane head of the compressor adopts the oil injection method from top to bottom, and there is a phenomenon that the gas cannot be exhausted;

3. The compressor adopts manual oil filling and exhaust by gravity, which will inevitably cause environmental pollution and economic loss caused by lubricating oil leakage;

4. Due to the damage of the diaphragm of the compressor, the CDI adsorption column backflush hydrogen cannot be recovered, and at the same time increase the cost of environmental protection and safety risks.

Utility model content

The purpose of the invention of this utility model is to: aim at the above existing problems, to provide a simple in structure, convenient and fast, scientific and reasonable, environmentally friendly and economical pipeline system for online oil injection of the compressor, using this pipeline system, the compressor can be realized without stopping Oil injection can improve the oil transportation of the compressor and reduce the damage caused by poor oil transportation. It is not necessary to disassemble any valves when filling the head with oil. the

The technical scheme that the utility model adopts is as follows:

The pipeline system for online oil injection of compressors of the utility model includes a compressor, the bottom of the compressor is connected with a buffer tank, the upper part of the buffer tank is provided with an air inlet and an oil filling port, and the bottom of the buffer tank is respectively connected Oil inlets at both ends of the compressor.

Due to the adoption of the above structure, the buffer tank is connected at the bottom of the compressor, so that the lubricating oil in the compressor can flow into the buffer tank, and since the lubricating oil flows in from the lower part of the buffer tank, the air in it moves upwards and collects in the buffer tank At the top, the upper part of the buffer tank is provided with an air inlet and an oil filling port, which can supply lubricating oil and 7Bbr nitrogen to the buffer tank, so that the lubricating oil in the buffer tank can be fed through the bottom of the buffer tank from the two ends of the compressor through the pipeline The mouth is pressed into the compressor, that is, the lubricating oil is pressed in from the bottom of the membrane head to realize online refueling. The pipeline system for online oil injection of the compressor of the utility model has the method of online oil injection: manually add the lubricating oil into the buffer tank through the oil filling port, let it stand for 30 minutes when the oil level reaches 60%, and add the oil through the nitrogen gas of 7MPa. Press the lubricating oil into the membrane head, and stop the oil injection when the oil level reaches 20%. The pipeline system for online oil injection can press oil from bottom to top, which can effectively discharge the gas in the membrane head and realize online oil injection at the same time. When the operator finds that the oil level of the compressor is low, he can immediately press in enough lubricating oil without stopping the machine. The purpose of convenience, quickness, scientific rationality, environmental protection and economy has been achieved. the

In the pipeline system for online oil injection of the compressor of the utility model, an oil filter is arranged on the pipeline connected to the two ends of the compressor at the bottom of the buffer tank. the

Due to the adoption of the above structure, the sundries in the oil passage can be drained through the filter, and the sundries can be effectively prevented from entering the membrane head and damaging the membrane. The structure is simple, convenient, scientific and reasonable, and environmentally friendly and economical. the

In the pipeline system for online oil injection of the compressor of the utility model, the filter screen in the oil filter is 1000 mesh. the

Due to the adoption of the above structure, it is used to filter the sundries in the oil circuit, prevent them from entering the membrane head and damage the membrane, and can effectively protect the membrane head, so that its lifespan is long. the

In the pipeline system for online oil injection of the compressor of the utility model, the volume of the buffer tank is 0.02 cubic meters, and the buffer tank is made of carbon steel. the

Due to the above structure, a buffer tank of 0.02 cubic meters is used, and the design pressure is 8Bar, and the temperature is 0-50°C, which can fully accommodate the oil supply to facilitate the discharge of air in the oil and avoid damage to the diaphragm. the

In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

1. The pipeline system for online oil injection of the compressor of the utility model has a simple structure, is convenient and quick, scientific and reasonable, and is environmentally friendly and economical. It can realize the non-stop oil injection of the compressor, improve the oil transportation of the compressor, and reduce the damage caused by poor oil transportation. ;

2. In the pipeline system for online oil injection of the compressor of the utility model, after the compressor is shut down for maintenance, the way of refueling the membrane head is low intake and high discharge, and the gas in the membrane head is completely exhausted. When injecting oil into the compressor membrane head No need to disassemble any valves;

3. The pipeline system for online oil injection of the compressor of the utility model realizes the oil injection without stopping the compressor, improves the oil transportation of the compressor, and reduces the damage caused by poor oil transportation; Into the high row, so that the gas in the membrane head can be completely exhausted, and there is no need to dismantle any valve when filling oil into the compressor membrane head;

4. The pipeline system for online oil injection of the compressor of the utility model realizes the purpose of convenience, quickness, scientific and reasonable, environmental protection and economy, and avoids that the adsorption column cannot be recycled due to the damage of the diaphragm of the compressor, and at the same time increases the cost of environmental protection and safety risk.

Description of drawings

Fig. 1 is the pipeline system of online oil injection of the compressor of the present invention. the

Marks in the figure: 1-compressor, 2-control valve, 3-oil filter, 4-buffer tank. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail. the

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model. the

As shown in Figure 1, the pipeline system for online oil injection of the compressor of the present utility model includes a compressor 1, a buffer tank 4 is connected to the bottom of the compressor 1, and an air inlet and a refueling port are arranged on the upper part of the buffer tank 4. The bottom of the buffer tank 4 is respectively connected to the oil inlets at both ends of the compressor 1 . An oil filter 3 is arranged on the pipeline connecting the bottom of the buffer tank 4 to both ends of the compressor 1 . The filter screen in the oil filter 3 is 1000 mesh, the volume of the buffer tank 4 is 0.02 cubic meters, and the buffer tank 4 is made of carbon steel. the

The key component of the diaphragm compressor 1 is the diaphragm. Its reciprocating motion directly acts on the gas to achieve the purpose of compression and transportation. Since the diaphragm material needs to have a high elastic limit and fatigue limit, most of the diaphragms are imported The price is expensive, and the phenomenon of diaphragm rupture often occurs during actual use. Once damaged, it will have a great impact on production. the

The main reasons for the damage of the diaphragm are: gas between the diaphragms during the filling of the diaphragm, dirty hydraulic oil, damage to the hydraulic components, impact of metal fragments caused by damage to the piston ring, or the impact of the liquid diaphragm group when it is attached. If there is a lot of air in between, the diaphragm can be damaged after starting. The existing oil filling method is to manually open the overflow valve of the membrane head and the drain valve at the bottom of the membrane head, and then add lubricating oil through the oil injection nozzle, and the lubricating oil fills the entire membrane head by gravity. This oil injection method cannot guarantee that the entire membrane head is filled with lubricating oil, and the gas will inevitably remain in the membrane head, and this oil injection method is easy to bring some debris into the membrane head during the oil injection process. During transportation, because gas and oil are mixed together at the membrane head or the lubricating oil contains sundries, the force of the lubricating oil on the diaphragm is not uniform during the work process, resulting in damage or damage to the diaphragm. the

The pipeline system for online oil injection of the compressor of the present utility model is constructed by adding a buffer tank 4 of 0.02 square meters and several control valves 2 . The oil filling method of this patent is: manually add the lubricating oil into the buffer tank through the filling port, when the oil level reaches 60%, let it stand for 30 minutes, pressurize the lubricating oil into the membrane head through 7MPa nitrogen pressure, when the oil level is Stop oiling at 20%. This new oil injection method adopts oil pressure from bottom to top, which can effectively discharge the gas in the membrane head, and at the same time realize online refueling. When the operator finds that the oil level of the compressor 1 is low, he can immediately press in enough lubricating oil without stopping the machine, which achieves the goals of convenience, scientific rationality, environmental protection and economy. the

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. the

Claims (4)

1. the pipe-line system of the online oiling of compressor; Comprise compressor (1); It is characterized in that: the bottom of said compressor (1) is connected with knock out drum (4); Said knock out drum (4) top is provided with suction port and oil filler, and the bottom of said knock out drum (4) is connected to the filler opening at compressor (1) two ends.

2. the pipe-line system of the online oiling of compressor as claimed in claim 1 is characterized in that: the pipeline that said knock out drum (4) bottom is connected to compressor (1) two ends is provided with oil strainer (3).

3. the pipe-line system of the online oiling of compressor as claimed in claim 2 is characterized in that: the filter screen in the said oil strainer (3) is 1000 orders.

4. like the pipe-line system of claim 1 or the online oiling of 2 or 3 described compressors, it is characterized in that: the volume of said knock out drum (4) is 0.02 cubic metre, and knock out drum (4) adopts carbon steel to process.

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