CN205000958U - Be used for anti - washout type sand removing device of three -phase separator - Google Patents

Abstract

It is used in the backwash desanding device of the three-phase separator. The feed port passes through the grit chamber through the connecting pipe, and the backflush liquid coil, filter hole plate, and filter screen are fixed in the grit chamber and the lower part of the connecting pipe; The water conservancy nozzles are distributed in an umbrella shape and installed on the recoil coil respectively; the range of water sprayed by the upper water conservancy nozzles covers the entire filter screen, and the range of water sprayed by the lower water conservancy nozzles covers the entire bottom of the grit chamber; its advantages Yes: the effect of one-time sand removal is realized, and there is no need to add a sand discharge device in the subsequent process. On the one hand, the process is simplified and the cost is saved. On the other hand, the sand removal efficiency of the three-phase separator is also improved; the backflush liquid All the sewage from the outlet realizes the utilization of waste and saves energy; the backwash sand removal system realizes the function of automatic sand cleaning and sand discharge, which is easier and simpler than manual sand cleaning, and the time is short and the efficiency is high.

Description

For three-phase separator backwash desanding device

technical field

The utility model relates to a tank body desanding device, in particular to a backwash type desanding device.

Background technique

Offshore oilfield production fluids are not only rich in crude oil, but also often accompanied by a large amount of impurities such as associated gas (the main component is methane), water, and silt. The existence of associated gas in the oil field will lead to the air lock of the oil well pump, which will reduce the pump efficiency, and will also cause the instability of the medium pressure in the process of crude oil transportation and production and processing. The presence of mud and sand will cause blockage of pipelines and equipment, affect normal production, and cause environmental pollution and formation damage. The water in crude oil not only greatly increases the load of pipelines and equipment in the process of crude oil storage, transportation, and refining, but also increases the energy consumption required for heating crude oil. In addition, impurities such as salt dissolved in water will also cause knots in equipment and pipelines. scale and corrosion.

Utility model content

The purpose of the utility model is to avoid the deficiencies of the prior art and provide a backwash sand removal device for a three-phase separator.

The technical scheme of the utility model is: a backwash sand removal device for a three-phase separator, including a feed port, a connecting pipe, a grit chamber, a backwash liquid coil, a water conservancy nozzle, a filter screen, a sand removal port, Breathable plate, bolts and nuts and sand washing pump, the feed port passes through the grit chamber through the connecting pipe, the recoil liquid coil, filter hole plate, and filter screen are fixed in the grit chamber and the lower part of the connecting pipe; the water conservancy nozzle is Umbrella distribution is respectively installed on the recoil coil; the range of water jetted from the upper water conservancy nozzle covers the entire filter screen, and the range of water jetted from the lower water conservancy nozzle covers the entire bottom of the grit chamber.

The filter wire mesh is made of 3 layers of steel wire mesh overlapped, and is fixed by bolts from the upper and lower filter orifice plates.

Compared with the prior art, the utility model has the advantages of realizing the effect of one-time sand removal, and no additional sand discharge device is needed in the subsequent process, which simplifies the process and saves costs on the one hand, and improves the efficiency on the other hand. The sand removal efficiency of the three-phase separator; all the backflush fluid comes from the sewage at the outlet, which realizes waste utilization and saves energy; the backwash sand removal system realizes the function of automatic sand removal and sand discharge, which is more efficient than manual sand removal Easy, simple, and short time, high efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the A-A sectional view of Fig. 1 of the present utility model.

Fig. 3 is an enlarged view of B of Fig. 1 of the present utility model.

Fig. 4 is the backwashing coil of the utility model.

Fig. 5 is a structural diagram of the utility model water conservancy nozzle.

Among them: 1 is the feed inlet, 2 is the connecting pipe, 3 is the backwash liquid coil, 4 is the water conservancy nozzle, 5 is the filter orifice plate, 6 is the filter screen, 7 is the grit chamber, 8 is the sand removal port, 9 is a hydraulic nozzle, 10 is a recoil coil, 11 is a ventilating plate, 12 is a bolt and nut, and 13 is a sand washing pump.

detailed description

Describe the embodiment of the utility model in detail below in conjunction with accompanying drawing.

It is used for three-phase separator backwash sand removal device, including feed inlet 1, connecting pipe 2, grit chamber 7, backwash liquid coil 3, water conservancy nozzle 4, filter screen 5, sand removal port 8, ventilation Plate 11, bolts and nuts 12 and sand washing pump 13, feed port 1 passes through the grit chamber 7 through the connecting pipe 2, backwash liquid coil 3, filter orifice plate 5, and filter screen 6 are fixed in the grit chamber 7 , the lower part of the connecting pipe 2; the hydraulic nozzles 9 are arranged in an umbrella shape and installed on the recoil coil 10 respectively; the water flow range sprayed by the upper hydraulic nozzles 9 covers the entire filter screen 6, and the water flow sprayed by the lower hydraulic nozzles 9 The scope covers the bottom of the entire grit chamber 7 tanks.

The filter wire mesh 6 is formed by overlapping three layers of steel wire mesh, and is fixed by bolts by two upper and lower filter orifice plates 5 .

The production fluid from the offshore oil field enters the grit chamber 7 from the feed port 1 through the connecting pipe 2. After a period of standing still, under the action of gravity settlement, most of the mud and sand are deposited on the bottom of the grit chamber 7, and some Due to the insufficient standing time, the small particles of mud and sand reach the air-permeable plate 11 along with the liquid flow. Since the air-permeable plate 11 has a filter screen 6 formed by overlapping three layers of steel mesh, under the filtering effect of the filter screen 6, Small particles of mud and sand are intercepted, thereby fully achieving the effect of sand removal. The produced fluid after desanding enters the follow-up process of the three-phase separator through the drain hole opened by the filter orifice plate 5 for degassing and dehydration.

With the continuous deposition of silt, after a period of time, the silt at the bottom of the grit chamber 7 becomes thicker and thicker, causing the space of the grit chamber to become smaller and smaller, which is not conducive to the subsequent deposition of silt, and the silt intercepted by the filter screen 6 There are also more and more, which will cause the filter screen 6 to be blocked, which is not conducive to the flow out of the production fluid. In order to solve this problem, the sewage discharged from the water outlet enters the recoil coil 3 through the sand washing pump 13, and the design of the upper recoil coil 3 and the upper water conservancy nozzle 9 can eliminate the blockage in the filter through the high-speed water flow injected. The mud and sand in the wire mesh 6 recoil into the grit chamber 7, and then realize the purpose of clearing out the silt in the filter wire mesh 6; the design of the lower recoil liquid coil 3 and the lower water conservancy nozzle 9 makes the tank The mud and sand at the bottom are mixed with it, and finally the mud and sand are discharged from the sand removal port 8 under the carrying of the water flow, and then the purpose of discharging the sand from the grit chamber is realized.

Claims (2)

1. Used for three-phase separator backwash sand removal device, including feed inlet, connecting pipe, grit chamber, backwash liquid coil, water conservancy nozzle, filter screen, sand removal port, ventilation plate, bolts and nuts and The sand washing pump is characterized in that: the feed port passes through the grit chamber through the connecting pipe, the recoil liquid coil, the filter hole plate, and the filter screen are fixed in the grit chamber and the lower part of the connecting pipe; the water conservancy nozzle is umbrella-shaped The distribution is respectively installed on the recoil coil; the range of water jetted from the upper water conservancy nozzle covers the entire filter screen, and the range of water jetted from the lower water conservancy nozzle covers the entire bottom of the grit chamber. 2. The backwash sand removal device for three-phase separator according to claim 1, characterized in that: the filter wire mesh is formed by overlapping three layers of steel wire mesh, and is fixed by bolts by two upper and lower filter orifice plates.