A combined skid-mounted gas pressure reduction and separation device

Abstract

This utility model discloses a skid-mounted combined gas pressure reducing and separating device, relating to the field of gas control technology. It includes three pressure gauges, a skid base, and a separator and filter located on top of the skid base. The front end of the filter is connected to a gas inlet valve, and the rear end is sequentially connected to a pressure gauge, a primary pressure reducing valve, a pressure gauge, a secondary pressure reducing valve, a separator inlet pipe, and the separator itself. A pressure gauge is located on top of the separator, and drain valves are located at the bottom of both the separator and the filter. The separator is connected to multiple gas outlet valves via a separator outlet pipe. Needle valves are installed on the two pressure gauges at the front and rear ends of the primary pressure reducing valve. This device features an integrated design and provides filtering, pressure reducing, separating, and buffering functions.

Description

Technical Field

[0001] This utility model relates to the field of gas control technology, and in particular to a skid-mounted combined gas pressure reducing and separating device. Background Technology

[0002] Typically, the gas inlet pressure range for small and medium-sized gas generator sets is between 3 kPa and 35 kPa (absolute pressure), but some have a range of 2 kPa to 5 kPa. For this type of gas generator, the gas inlet pipe is usually a straight section of DN50 / PN10. The gas source for gas generator sets is generally pipeline gas or wellhead gas from outside the oil and gas field well station. These gas sources are generally unstable, with large pressure fluctuations and carrying oil or other liquids. When these gas sources enter the gas generator, it will cause the operating gas generator to shut down. Furthermore, impurities such as liquids entering the engine will damage it, directly shortening the generator set's lifespan and increasing maintenance costs and downtime. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a skid-mounted combined gas pressure reducing and separating device with an integrated design, featuring functions such as filtration, pressure reduction, separation, and buffering.

[0004] In order to achieve the purpose of this utility model, the following solution is proposed:

[0005] A skid-mounted combined gas pressure reducing and separating device includes three pressure gauges, a skid base, and a separator and filter located on top of the skid base.

[0006] The front end of the filter is connected to the gas inlet valve, and the rear end is connected in sequence to the pressure gauge, the first-stage pressure reducing valve, the pressure gauge, the second-stage pressure reducing valve, the separator inlet pipe, and the separator.

[0007] A pressure gauge is installed at the top of the separator, and drain valves are installed at the bottom of both the separator and the filter;

[0008] The separator is connected to multiple gas outlet valves via a separator outlet pipeline;

[0009] Needle valves are installed on both the front and rear pressure gauges of the primary pressure reducing valve.

[0010] Furthermore, the gas outlet valve is mounted on top of the skid via a first support.

[0011] Furthermore, the filter is mounted on top of the skid via a second support.

[0012] Furthermore, the filter is selected to be a model with the function of filtering large-diameter oil and liquid impurities.

[0013] Furthermore, the separator is selected to be a model that can separate oil and liquid impurities and has pulsation suppression function.

[0014] The beneficial effects of this utility model are as follows:

[0015] This device has the following advantages:

[0016] 1. Integrated design:

[0017] Functional integration: The functions of filtration, pressure reduction, separation, and buffering are integrated into a single skid-mounted unit, which solves the problems of low efficiency and inconvenient operation caused by the separate setting of separators and pressure regulating skids in traditional technologies.

[0018] Compact structure: The modular design reduces the number of interfaces, lowers the risk of leakage, and facilitates relocation and installation.

[0019] 2. Separator pulsation suppression function:

[0020] Dynamic pressure stabilization: It utilizes the compressibility of gas to absorb the peak pressure of fluid pulsation and releases energy at low pressure, effectively suppressing gas pressure fluctuations;

[0021] Protect equipment: Prevent pipeline vibration, instrument errors or seal failure caused by pressure fluctuations, and extend the service life of valves and pipelines.

[0022] 3. Gas supply capacity of multiple units:

[0023] Flexible configuration: By controlling the opening and closing of the gas outlet valve, a stable gas source can be provided for one or more gas generator sets to meet the power generation needs of different scales.

[0024] Adjustable pressure: The two-stage pressure reducing valve design (first-stage and second-stage pressure reduction) ensures that the gas pressure is precisely matched to the inlet requirements of the generator set.

[0025] 4. Mobile skid-mounted design:

[0026] Easy relocation: The overall skid-mounted structure facilitates transportation and rapid deployment, making it particularly suitable for scenarios requiring frequent relocation, such as oil and gas fields;

[0027] Easy maintenance: The drain valve connects to the external manifold, allowing for regular cleaning of impurities and reducing downtime.

[0028] 5. Synergistic filtration and separation:

[0029] Multi-stage impurity treatment: The filter removes large particulate impurities (such as oil), the separator further separates tiny droplets, and the pressure reducing valve and generator set are under dual protection.

[0030] Optimized sewage discharge system: Both the separator and the filter are equipped with sewage discharge valves, allowing impurities to be discharged centrally and preventing accumulation inside the equipment. Attached Figure Description

[0031] Figure 1 A structural diagram of a gas pressure reducing and separating device is shown. Detailed Implementation

[0032] like Figure 1 As shown, this embodiment provides a skid-mounted combined gas pressure reducing and separating device, including three pressure gauges 1, a skid base 5, and a separator 2 and a filter 9 located on the top of the skid base 5.

[0033] Specifically, the front end of filter 9 is connected to gas inlet valve 4, and the rear end of filter 9 is sequentially connected to pressure gauge 1, primary pressure reducing valve 13, pressure gauge 1, secondary pressure reducing valve 14, separator inlet pipe 15, and separator 2. Both pressure gauges 1 at the front and rear ends of primary pressure reducing valve 13 are equipped with needle valves 11, and a third pressure gauge 1 is located at the top of separator 2. Both separator 2 and filter 9 have drain valves 3 at their bottoms. Separator 2 is connected to multiple gas outlet valves 8 via separator outlet pipe 6.

[0034] Specifically, filter 9 is selected as a model with the function of filtering large-diameter oil and liquid impurities.

[0035] Specifically, separator 2 is selected as a model that can separate oil and liquid impurities and has pulsation suppression function.

[0036] Specifically, the gas outlet valve 8 is mounted on the top of the skid seat 5 via the first support frame 7, and the filter 9 is mounted on the top of the skid seat 5 via the second support frame 10.

[0037] Pipeline gas or wellhead gas from outside the oil and gas field well station enters this device through gas inlet valve 4. It is filtered by filter 9 to remove large-diameter impurities such as oil and liquid. The drain valve 3 at the bottom of filter 9 is connected to the external drain manifold. When filter 9 accumulates impurities of oil and liquid, these impurities are discharged through drain valve 3. This helps to protect the seals of the primary pressure reducing valve 13 and the secondary pressure reducing valve 14 and extend their service life.

[0038] The filtered gas is regulated by a primary pressure reducing valve 13 and a secondary pressure reducing valve 14. Two pressure gauges 1 at the front and rear of the primary pressure reducing valve 13 are used to observe the pressure before and after pressure reduction on site.

[0039] After undergoing two stages of pressure reduction, the gas enters the separator 2. The pressure gauge 1 at the top of the separator 2 is used to display the pressure after the second stage of pressure reduction. The drain valve 3 at the bottom of the separator 2 is connected to the external drain manifold. When the separator 2 accumulates small impurities such as oil and liquid, these impurities are discharged through the drain valve 3.

[0040] In addition to separating impurities such as oil and liquid, separator 2 also has a pulsation suppression function. When the pipeline gas or wellhead gas outside the oil and gas field well station suddenly experiences large fluctuations or remains in a state of pressure instability for a long time, it utilizes the compressibility of gas to absorb the peak pressure of fluid pulsation and releases energy at low pressure to achieve pressure stability. Separator 2 with pulsation suppression function can prevent periodic pressure fluctuations in the inlet pipeline of the gas generator set from causing pipeline vibration, instrument measurement errors, or component damage (such as seal failure). At the same time, it can also reduce water hammer effect or cavitation, and extend the service life of valves and pipelines.

[0041] The separated and pressure-stabilized gas is connected to the inlet pipeline of the gas-fired power generation unit via gas outlet valve 8, which can provide a stable gas source with adjustable pressure and impurity separation for one or more gas generators. When supplying gas to a single gas generator unit, any one of the gas outlet valves 8 can be closed.

[0042] In summary, this device integrates functions such as filtration, pressure reduction, separation, and buffering, providing a stable gas source with adjustable pressure and impurity separation for single or multiple gas generators. This device boasts advantages such as integrated design, easy relocation, convenient operation, easy maintenance, and minimal interface leakage, achieving the goals of convenient assembly and disassembly, time saving, and improved maintenance efficiency.

[0043] The above embodiments are only used to illustrate the technical concept and features of this utility model, and are not intended to be unique or to limit this utility model. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A skid-mounted combined gas pressure reduction and separation device, characterized in that, Includes three pressure gauges (1), a skid (5), and a separator (2) and a filter (9) located on top of the skid (5); The filter (9) is connected to the gas inlet valve (4) at the front end and to the pressure gauge (1), the first-stage pressure reducing valve (13), the pressure gauge (1), the second-stage pressure reducing valve (14), the separator inlet pipe (15), and the separator (2) in sequence at the rear end. A pressure gauge (1) is provided on the top of the separator (2), and a drain valve (3) is provided at the bottom of both the separator (2) and the filter (9); The separator (2) is connected to multiple gas outlet valves (8) through the separator outlet pipe (6); The first-stage pressure reducing valve (13) has needle valves (11) on both the front and rear pressure gauges (1).

2. The skid-mounted combined gas pressure reduction and separation apparatus according to claim 1, characterized by, The gas outlet valve (8) is mounted on the top of the skid seat (5) via the first support frame (7).

3. The skid-mounted combined gas pressure reduction and separation apparatus according to claim 1, characterized by, The filter (9) is mounted on top of the pry bar (5) via the second support frame (10).

4. The skid-mounted combined gas pressure-reducing and separating device according to claim 1, characterized by The filter (9) should be a model that has the function of filtering large-diameter oil and liquid impurities.

5. The skid-mounted combined gas pressure reducing and separating device according to claim 1, characterized in that, The separator (2) is selected to be a model that can separate oil and liquid impurities and has pulsation suppression function.

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