CN204312272U - A device that uses purified compressed air as a starting gas source for natural gas compressors - Google Patents

Abstract

The utility model provides a device for utilizing purified compressed air as a natural gas compressor starting air source, wherein the natural gas compressor comprises an air motor, a filter valve connected with the air motor and a ball valve connected with the filter valve, the other end of the ball valve is connected with a purified compressed air storage tank through a pressure reducing valve, the purified compressed air storage tank is connected with a purified compressed air device, and a pressure gauge is connected between the pressure reducing valve and the ball valve; the inlet end of the air purifying and compressing device is connected with an air purifying and recovering storage tank, and the inlet end of the air purifying and recovering storage tank is connected with an air motor. The purified compressed air is used as a starting air source of the natural gas compressor, so that potential safety hazards caused by natural gas discharge are eliminated, meanwhile, the loss of natural gas is reduced, and energy is saved; the purified compressed air discharged from the gas motor is recovered, the recovered purified compressed air is used as the starting gas source of the natural gas compressor again for cyclic utilization, and the gas motor is safer and more reliable compared with natural gas due to the fact that air is adopted.

Description

A device that uses purified compressed air as a starting gas source for natural gas compressors

technical field

The utility model relates to the field of oil and gas field gathering and transportation, in particular to a device using purified compressed air as the starting gas source of a natural gas compressor.

Background technique

The natural gas compressor unit adopts the air motor starting method. The air motor starting system is composed of an air motor, filter, starting ball valve and pipeline. The natural gas compressor unit is designed to use 0.6MP natural gas as the starting gas source. When the starting ball valve is opened to connect the starting air source, the starting air source enters the air motor through the filter, and the motor gear extends out with the shaft to mesh with the flywheel gear. At the same time, the driving gear on the motor rotates to drive the flywheel to rotate. At the same time, the starting air source Exhaust directly from the air motor. Since the compressor unit is installed in a semi-enclosed noise-reducing machine room, the direct discharge of natural gas poses a great safety hazard and causes natural gas loss.

From the perspective of gas field safety production and energy saving and consumption reduction, it is urgent to transform the starting gas source system of natural gas compressors to meet the needs of safe, efficient and environmentally friendly development.

Utility model content

The purpose of the utility model is to solve the problems of resource waste, environmental pollution and relatively large safety hazards in the existing natural gas compressors using natural gas as the starting gas source.

For this reason, the utility model provides a device that uses purified compressed air as the starting gas source of a natural gas compressor, and the natural gas compressor includes a gas motor, a filter valve connected with the gas motor for filtering gas impurities, and a A ball valve, the other end of the ball valve is connected to a purified compressed air storage tank through a pressure reducing valve, the purified compressed air storage tank is connected to a purified compressed air device, and a pressure gauge is connected between the pressure reducing valve and the ball valve;

The inlet end of the purified compressed air device is connected with a purified air recovery storage tank, and the inlet end of the purified air recovery storage tank is connected with an air motor.

The compressed air purification device is composed of an air purifier and a compressed air system connected to the air purifier, the air purifier is connected to a purified compressed air storage tank, and the compressed air system is connected to a purified air recovery storage tank.

The compressed air system is arranged on the top of the air cleaner, and the bottom of the compressed air system is connected to the top of the air cleaner through pipelines.

The compressed air system includes an air compressor, an air storage tank, a filter, a dryer, and an air pipeline connected in sequence, and the air pipeline is connected to an air cleaner.

The filter valve is a Y-type filter valve.

The pressure reducing valve is arranged at the outlet of the purified compressed air storage tank.

The beneficial effects of the utility model: the use of purified compressed air as the starting gas source of the natural gas compressor eliminates the potential safety hazards caused by the discharge of natural gas, and at the same time reduces the loss of natural gas and saves energy; the utility model discharges the gas from the gas motor The purified compressed air is recycled, and the recovered purified compressed air is used as the starting gas source of the natural gas compressor again for recycling, which can effectively reduce the processing energy consumption of the air purifier, and because the utility model uses air, it is similar to natural gas Compared, it is safer and more reliable, and at the same time it is easy to operate and the effect is remarkable.

The utility model will be described in further detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of a device using purified compressed air as a starting gas source for a natural gas compressor.

Description of reference signs: 1. Air motor; 2. Filter valve; 3. Ball valve; 4. Pressure gauge; 5. Pressure reducing valve; 6. Cleaning compressed air storage tank; 7. Purifying compressed air device; ; 702, air purifier; 8, purified air recovery storage tank.

Detailed ways

The device using purified compressed air as the start-up gas source of the natural gas compressor will be further described in detail below in conjunction with accompanying drawing 1 .

Example 1:

As shown in Figure 1, the device utilizing purified compressed air as the starting gas source of the natural gas compressor uses air instead of natural gas as the starting gas source of the natural gas compressor. A filter valve 2 for filtering gas impurities and a ball valve 3 connected to the filter valve 2, the other end of the ball valve 3 is connected to a purified compressed air storage tank 6 through a pressure reducing valve 5, and the purified compressed air storage tank 6 is connected to a purified compressed air device 7, The inlet end of the purified compressed air device 7 is connected with a purified air recovery storage tank 8 , and the inlet end of the purified air recovery storage tank 8 is connected with the air motor 1 . First open the ball valve 3, the air is used as the starting air source, enters the purified compressed air device 7 to be purified and compressed, and then enters the purified compressed air storage tank 6 through the pipeline, and the purified compressed air storage tank 6 is connected with a pressure reducing valve 5, a pressure reducing valve There is a pressure gauge 4 between 5 and ball valve 3, the pressure of purified compressed air can be set at 0.6Mpa, the air after purification and decompression passes through ball valve 3, enters filter valve 2, and uses filter valve 2 to remove solid impurities in the air , to prevent impurities from entering the air motor 1 and causing wear to the motor gears, the filtered air finally enters the air motor 1, drives the motor gear to rotate and then drives the flywheel to rotate, at the same time, the purified compressed air discharged from the air motor 1 is transmitted through the pipeline To the purified air recovery storage tank 8, since the purified air recovery storage tank 8 is connected to the air cleaner 702, the air output from the purified air recovery storage tank 8 enters the air cleaner 702 and can be directly used as the starting gas source of the natural gas compressor after being purified , for recycling, effectively reducing the processing load of the air purification system, saving energy, and safe and reliable, easy to operate.

Example 2:

On the basis of Example 1, specifically, the purified compressed air device 7 is composed of an air cleaner 702 and a compressed air system 701 connected to the air cleaner 702, the air cleaner 702 is connected to the purified compressed air storage tank 6, The compressed air system 701 is connected with the purified air recovery storage tank 8 . That is, after the ball valve 3 is opened, the air enters the purified compressed air device 7 as the starting air source, specifically, the air enters the compressed air system 701 in the purified compressed air device 7, and after being compressed, it enters and is connected with the compressed air system 701 air purifier 702, the purified air is then input into the purified compressed air storage tank 6 through the pipeline, the purified compressed air storage tank 6 is connected with a pressure reducing valve 5, and the pressure reducing valve 5 is provided with a pressure gauge 4, so that the purified air can be purified The pressure of the compressed air is set at 0.6Mpa. The purified and decompressed air passes through the ball valve 3 and enters the filter valve 2. The solid impurities in the air are removed by the filter valve 2 to prevent the impurities from entering the air motor 1 and causing wear on the motor gear. The filtered air finally enters the air motor 1, which drives the motor gear to rotate and then drives the flywheel to rotate. At the same time, the purified compressed air discharged from the air motor 1 is transmitted to the purified air recovery storage tank 8 through the pipeline, because the purified air recovery storage tank 8 It is connected with the air purifier 702, so the air output from the purified air recovery storage tank 8 enters the air purifier 702 and can be directly used as the start-up gas source of the natural gas compressor for recycling, effectively reducing the processing load of the air purification system and saving energy. Energy, safe and reliable, easy to operate.

Example 3:

On the basis of Embodiment 2, it should be noted that the compressed air system 701 is arranged on the top of the air cleaner 702, and the bottom of the compressed air system 701 is connected to the top of the air cleaner 702 through pipelines.

Example 4:

On the basis of Embodiment 2, it should be pointed out that the compressed air system 701 includes an air compressor, an air storage tank, a filter, a dryer, and an air pipeline connected in sequence, and the air pipeline is connected with the air Purifier 702 is connected. The compressed air system 701 belongs to the known technology and will not be described in detail here; specifically, after the air is collected by the air inlet of the air compressor and compressed by the machine head, it is injected into the air storage tank from the air outlet of the air compressor. Because there is a temperature difference between the air collected by the air inlet and the compressed air ejected from the air outlet after doing work, most of the condensed water will inevitably precipitate and contain a small amount of oil and impurities. Therefore, an air storage tank is required to store the impurities in the air in the air storage tank. After settling, most of the water, oil, and dust are separated, and discharged from the compressed air system 701 through the sewage outlet. The air in the air storage tank enters the filter after settling, and the number of filters and the position connected to the compressed air system 701 are also different according to the requirements of the air quality. The basic configuration is that the filtration accuracy is 3μm, 1μm, 0.01μm accuracy. The filtered air enters the dryer. The drying of compressed air is a relative concept. As long as there is a change in temperature during the use of compressed air, moisture will be precipitated. It is only in terms of the amount of moisture that is precipitated. After drying by the dryer The air enters the gas pipeline, which is the pipeline that transports compressed air to the point of use, as long as the flow, pressure, and purity required by the point of use of compressed air are met. The gas pipeline is connected with the air cleaner 702 .

Example 5:

On the basis of embodiment 3, in order to remove the solid impurities in the air and prevent the impurities from wearing the motor gear, a filter valve 2 is arranged downstream of the ball valve 3, preferably, the filter valve 2 is a Y-type filter valve 2.

Embodiment 6:

On the basis of Embodiment 5, it should be pointed out that the pressure reducing valve 5 is arranged at the outlet of the purified compressed air storage tank 6 .

The above-mentioned purified compressed air device 7 adopts skid-mounted air source purification devices such as LUD30-1, VF-4.5/10, LUD7.5-30, and YKQ-XL01 produced by Sichuan Cameron Petroleum Equipment Co., Ltd. The device combines a compressed air system 701 and an air cleaner 702 into a skid.

The device using purified compressed air as the start-up gas source of the natural gas compressor uses air instead of natural gas as the start-up gas source of the natural gas compressor, and can provide purified compressed air with a water dew point less than -40°C and 1.0Mpa, and the air is used as the start-up gas source. Purify the compressed air device, specifically, the air enters the compressed air system in the purified compressed air device, after being compressed, it enters the air purifier connected to the compressed air system, and the purified air is then input into the purified compressed air through the pipeline The storage tank, the purified compressed air storage tank is connected with a pressure reducing valve, and the pressure reducing valve is equipped with a pressure gauge, which can set the pressure of the purified compressed air at 0.6Mpa. The purified and decompressed air passes through the ball valve and enters the filter valve. Use the filter valve to remove solid impurities in the air to prevent impurities from entering the air motor 1 and causing wear on the motor gears. The filtered air finally enters the air motor 1, driving the motor gears to rotate and then driving the flywheel to rotate. At the same time, the air from the air motor 1. The discharged purified compressed air is transported to the purified air recovery storage tank through pipelines. Since the purified air recovery storage tank is connected to the air purifier, the air output from the purified air recovery storage tank enters the air purifier and can be directly used as a natural gas compressor after being purified. The start-up air source is used for recycling, which effectively reduces the processing load of the air purification system, saves energy, is safe, reliable, and easy to operate.

The above examples are only illustrations of the present utility model, and do not constitute a limitation to the protection scope of the present utility model. All designs identical or similar to the present utility model belong to the protection scope of the present invention.

Claims (6)

1. utilize purification of compressed air to start the device of source of the gas as natural gas compressor, the ball valve (3) that described natural gas compressor comprises gas motor (1), the filter tap for filtering gas impurity (2) be connected with gas motor (1) and is connected with filter tap (2), it is characterized in that: the other end of described ball valve (3) is connected with purification of compressed air storage tank (6) by reduction valve (5), purification of compressed air storage tank (6) is connected with purification of compressed air device (7), is connected with pressure gauge (4) between reduction valve (5) and ball valve (3);

The entry end of described purification of compressed air device (7) is connected with to purify air and reclaims storage tank (8), and the entry end reclaiming storage tank (8) that purifies air is connected with gas motor (1).

2. utilize purification of compressed air to start the device of source of the gas as natural gas compressor as claimed in claim 1, it is characterized in that: described purification of compressed air device (7) is made up of air cleaner (702) and the compressed air system (701) that is connected with air cleaner (702), air cleaner (702) and purification of compressed air storage tank (6), compressed air system (701) reclaims storage tank (8) and is connected with purifying air.

3. utilize purification of compressed air to start the device of source of the gas as natural gas compressor as claimed in claim 2, it is characterized in that: described compressed air system (701) is arranged on the top of air cleaner (702), and the bottom of compressed air system (701) is connected by pipeline with the top of air cleaner (702).

4. utilize purification of compressed air to start the device of source of the gas as natural gas compressor as claimed in claim 2 or claim 3, it is characterized in that: described compressed air system (701) comprises the air compressor, gas holder, filter, dryer, the gas pipeline that connect successively, and described gas pipeline is connected with air cleaner (702).

5. utilize purification of compressed air to start the device of source of the gas as natural gas compressor as claimed in claim 4, it is characterized in that: described filter tap (2) is Y type filter tap (2).

6. utilize purification of compressed air to start the device of source of the gas as natural gas compressor as claimed in claim 5, it is characterized in that: described reduction valve (5) is arranged on the outlet port of purification of compressed air storage tank (6).