CN1920248A

CN1920248A - Inhibiter continuous injection apparatus

Info

Publication number: CN1920248A
Application number: CN 200610021383
Authority: CN
Inventors: 米力田; 陈汝培; 李珣; 胡锦; 曾文
Original assignee: Southwest Subsidiary Co Engineering Desigh Co Ltd Of Sinopec
Current assignee: Southwest Subsidiary Co Engineering Desigh Co Ltd Of Sinopec
Priority date: 2006-07-12
Filing date: 2006-07-12
Publication date: 2007-02-28

Abstract

The invention relates to an inhibitor continuous pour device, used to continuously pour the inhibitor, wherein it comprises: a material storage, a pouring area, and a pouring head area, while it can avoid leakage caused by too much connecting points. And its worm atom ejector can eject the inhibitor uniformly on the tube wall, to continuously pour the inhibitor on the object needed corrosion resistance.

Description

Inhibiter continuous injection apparatus

Technical field: a kind of inhibiter continuous injection apparatus, be used for corrosion inhibiter is implemented filling continuously, belong to the manufacturing technology field of inhibiter continuous injection equipment.

Background technology: in order to slow down petroleum gas well head and Corrosion of Pipeline, will be in existing petroleum gas system to the gathering system corrosion inhibiter of annotating, the existing corrosion inhibiter charging method that is used for oil natural gas well head gathering line mainly contains infusion, instillation, injection injects and the bar-shaped corrosion inhibiter filling of well head etc.; Wherein, instillation is the gravity that utilizes high potential difference to produce, and corrosion inhibiter is instilled in well head oil casing annular space or the pipeline by injector, and this injector can not make the corrosion inhibiter atomizing, so film-formation result is poor, easily stops up, and is only applicable to the gas well of less output; It is to utilize the pressure of well head or pipeline affluence to be used as power that injection injects, adopt the corrosion inhibiter after injector will atomize to be suspended in more uniformly in the interior natural gas of pipeline, then along with the motion of natural gas equably attached to inner-walls of duct, form liquid film, the protection inner surface of pipeline is not corroded, the shortcoming of the atomized spray of this injector is to be subjected to well head or pipeline whether the restriction of safety pressure margin is arranged, and can not be used for the filling of well head; Bar-shaped corrosion inhibiter filling is the gravity that utilizes bar-shaped corrosion inhibiter sole mass to produce, and arrives the shaft bottom down by fill valve and well head, and this bar-shaped corrosion inhibiter has bigger application limitation, is only applicable to the bigger gas well of aquifer yield; In order to make oil and gas wellhead and pipeline effectively anticorrosion, be confined to the domestic prior art corrosion inhibiter of all can not annotating continuously simultaneously again, so present domestic gas well generally adopts corrosion inhibiter intermittently to inject; Evidence, the antiseptic effect of the corrosion inhibiter of annotating continuously is best, and antiseptic effect can reach more than 90%, infusion is adopted in existing continuous injection more, infusion is corrosion inhibiter to be added through high-pressure pump be sent to filling head, after the atomizing, is ejected in well head oil casing annular space or the pipeline in filling head, the shortcoming of existing infusion device is: device adopts loose mail to disperse design, floor space is big, and corrosion inhibiter adopts fuel nozzle to spray, and atomizing effect is poor, and need on-the-spot installation the, so difficult quality control.

Summary of the invention: the objective of the invention is at the unfavorable problem of existing inhibiter continuous injection apparatus spray effect, design a kind of adopt integrated, with the inhibiter continuous injection apparatus of corrosion inhibiter atomized spray.

The present invention is made up of raw material storage district 1, metering filling district 2 and filling Head Section 3; The raw material storage district comprises corrosion inhibiter bucket 6, measuring pump 4; The entrance point of measuring pump 4 links to each other with corrosion inhibiter bucket 6 by pipeline 5, and the port of export links to each other by the measuring tank 45 of pipeline 7 with metering filling district; Corrosion inhibiter in the corrosion inhibiter bucket 6 is driven in the measuring tank 45 in metering filling district by measuring pump 4;

Metering filling district is made up of measuring tank 45, strainer 40, plunger displacement pump 38 and valve, the lower end of measuring tank 45 is connected with the arrival end of plunger displacement pump 38 through strainer 40, the port of export of plunger displacement pump 38 links to each other with manifold 37 through ball valve 35, manifold 37 one tunnel leads to the filling Head Section, another road connects the top of measuring tank 45, constitutes the emptying backflow debug system of one's respective area; For purpose of safety, lead at manifold 37 on the pipeline 10 of measuring tank 45 and also be connected with safety valve 12, for observed pressure changes, also be connected with a stop valve 16 and a pressure meter 17 in the centre of manifold 37; The various valves in metering filling district collect in a place by the pipeline connection, adopt the skid structure, but entrucking are moved;

The filling Head Section is made up of high pressure filter 20, four opening manifolds 27, filling head 33,

stop valve

23,26,22 and gate valve 30; High pressure filter 20 links to each other with four opening manifolds, 27 entrance points by stop valve 23; Four opening manifolds, 27 ports of export are connected with filling head 33 after connecting a gate valve 30 by pipeline 28 again, and the one side on four opening manifolds, 27 both sides connects stop valve 22, and the port of export of stop valve 22 is for detecting mouth, and another side connects a stop valve 26 and a pressure meter 25.

Earlier this device is debugged before starting this device, method is: open stop valve 16 under metering filling district's pressure meter 17 and the ball valve 14 on the emptying reflux pipeline, stop valve 15, start plunger displacement pump 38 then, and allow plunger displacement pump 38 running no loads reflux 5 minutes, after checking no abnormal situation, close the stop valve 15 on the emptying reflux pipeline gradually, stop to boost after pressure is raised to 5MPa, allow plunger displacement pump 38 runnings reflux again 5 minutes, check no abnormal situation, continue to boost to design pressure and pressurize 2 minutes, answer no abnormal and leakage situation in the test process, otherwise hard stop is handled, and as normally, enters the debugging of filling Head Section again; The debugging of filling Head Section: open the stop valve 15 on metering filling district's emptying reflux pipeline, make pressure drop to 0.3MPa, open then and be connected ball valve 19, flap valve 18, the stop valve 23 on the metering filling district four opening manifolds 27 and detect mouthful stop valve 22 at place and the stop valve 26 of pressure meter 25 front ends, air in the evacuated tube, when stop valve 22 ports of export detection mouth has corrosion inhibiter to flow out, just show that emptying finishes, close stop valve 22 then, close the stop valve 15 on the emptying reflux pipeline, and open the gate valve 30 that leads to filling head and carry out the spray operation;

Advantage of the present invention is: the present invention adopts swirling flow whirlpool atomization technology, integrated skid design of the present invention, reduced connecting line length, be convenient to moving of equipment, it is little to have the pressure loss, the corrosion inhibiter uniform atomizing can be injected in the characteristics of oil recovery gas production wellhead or pipe surface, and the advantage that can annotate continuously.

Description of drawings:

Fig. 1 is the annotate flow process theory diagram of technology three parts of the present invention.

Fig. 2 is a process chart of the present invention.

Fig. 3 is the sectional structure schematic diagram of filling head nozzle 33 of the present invention.

Fig. 4 is filling head nozzle 33 cross section plan structure figure of the present invention.

The specific embodiment: provide most preferred embodiment of the present invention below in conjunction with accompanying drawing: the present invention is made up of raw material storage district 1, metering filling district 2 and filling Head Section 3; Raw material storage district 1 comprises corrosion inhibiter bucket 6, measuring pump 4, connecting

line

5 and 7; The entrance point of measuring pump 4 links to each other with corrosion inhibiter bucket 6, and the port of export of measuring pump 4 links to each other with the measuring tank 45 in metering filling district 2; Corrosion inhibiter in the corrosion inhibiter bucket 6 is driven in the measuring tank 45 in metering filling district 2 by measuring pump 4;

Metering filling district is by measuring tank 45, strainer 40, plunger displacement pump 38, valve and connecting line are formed, the lower end of measuring tank 45 is by pipeline 44, ball valve 43 is connected with strainer 40 with pipeline 42, strainer 40 is connected by the arrival end of pipeline 39 with plunger displacement pump 38, plunger displacement pump 38 is linked to each other with switchgear house by cable 9, the port of export of plunger displacement pump 38 is linked to each other with manifold 37 with pipeline 34 through ball valve 35 by pipeline 36, manifold 37 outlets have two-way, the ball valve 19 of leading up to is connected with filling Head Section 3 with flap valve 18 backs, another road is by pipeline 13, ball valve 14, stop valve 15, pipeline 10 is connected with measuring tank 45 tops, constitutes the emptying backflow debug system of one's respective area; For purpose of safety, lead on manifold 37 left sides on the pipeline 10 of measuring tank 45 and also be connected with safety valve 12 by pipeline 11, also be connected with a stop valve 16 and a pressure meter 17 in the centre of manifold 37; The metering filling is distinguished 2 and is adopted the skid structures, and various valves, the equipment in metering filling district 2 are collected on the same skid base by the pipeline connection, but entrucking is moved;

The filling Head Section is by high pressure filter 20, four opening manifolds 27, filling head nozzle 33,

stop valve

23,26,22 and gate valve 30, and the pipeline composition, and high pressure filter 20 links to each other with four opening manifolds, 27 arrival ends with pipeline 24 through pipelines 21, stop valve 23; Four opening manifolds, 27 ports of export are by pipeline 28 process gate valves 30, be connected with filling head nozzle 33 through pipeline 31 again, the one side on four opening manifolds, 27 both sides connects a stop valve 22 by pipeline 29, the port of export of stop valve 22 is for detecting mouth, constitute the test lead of filling Head Section, another side connects a stop valve 26 and a pressure meter 25; Filling head nozzle 33 is by ejector tube 54, ejector cap 46 and sealing ring 52 are formed, ejector cap 46 is connected by the front end of screw thread with ejector tube 54, in order to seal, between ejector cap 46 and ejector tube 54, be provided with sealing ring 52, in order to make corrosion inhibiter swirling flow ejection, the external diameter of the front end of ejector tube 54 is less than the internal diameter of ejector cap 46 front ends, tangentially have aperture 47 at ejector tube 54 front ends, front end at aperture 47 is provided with and aperture 47 tangential identical spiral grooves 55, so, between the internal diameter of the external diameter of ejector tube 54 front ends and ejector cap 46, formed annular clearance 51, the circumference foremost of ejector tube 54 is provided with the tangential opening 48 that is made of overflowing board 56, and forms swirling chamber 50;

The atomization process of fluid in filling head nozzle 33 is: fluid is at first entered the annular clearance 51 of band spiral goove 55 by the tangential small-hole 47 of ejector tube 54 front ends, because spiral goove 55 is tangential tangentially identical with aperture 47, therefore, fluid turbulence intensity in annular clearance 51 increases, fluid enters swirling chamber 50 through tangential opening 48 then, the rotation direction of tangential opening 48 is opposite with the rotation direction of aperture 47, therefore, fluid turbulence level in swirling chamber 50 further increases, be rotating vortex, last fluid is by spray-hole 49 ejections.

Before starting this device, want earlier this device to be debugged, adjustment method comprises the debugging to metering filling district and filling Head Section, method is: for the gas in the emptying strainer 40, open the ball valve 41 of strainer 40 tops outlet, when ball valve 41 outlets have corrosion inhibiter to flow out, show that emptying finishes, close ball valve 41 immediately after having arranged gas; Open stop valve 16 under the pressure meter 17 that is arranged on the manifold 37 and the ball valve 14 on the emptying reflux pipeline, stop valve 15, start plunger displacement pump 38 then, allow plunger displacement pump 38 running no loads reflux 5 minutes, check everywhere, if no abnormal situation, close the stop valve 15 on the emptying reflux pipeline gradually, stop to boost after pressure is raised to 5MPa, allow plunger displacement pump 38 runnings reflux again 5 minutes, check everywhere, if no abnormal situation continues to boost to design pressure and pressurize 2 minutes afterwards, in the pressurize and the process of boosting, check everywhere at any time, answer no abnormal phenomenon and leakage situation, otherwise hard stop is handled, and is normal as all, enters the debugging of next step filling Head Section again; The debugging of filling Head Section, open the stop valve 15 on metering filling district's emptying reflux pipeline, make pressure drop to 0.3MPa, open the charging ball valve 19 that is connected on the metering filling district four opening manifolds 27 then, flap valve 18, stop valve 23, open the stop valve 22 of filling Head Section test lead again, open pressure meter front end stop valve 26, air in the evacuated tube, when the port of export detection mouth of stop valve 22 has corrosion inhibiter to flow out, just show that emptying finishes, close the stop valve 22 of filling Head Section test lead then, close the stop valve 15 on the emptying reflux pipeline, and open the gate valve 30 that leads to filling head nozzle 33 and carry out the spray operation.

Mode of operation is as follows:

The ordinary production state: the corrosion inhibiter in the corrosion inhibiter bucket 6 is poured in measuring tank 45 by measuring pump 4, and the liquid level of measuring tank 45 can not be lower than intake, can observe content gauge 8, when finding fluid low, should in time add working media; Flow to strainer 40 by

pipeline

44 and 42 and carry out the filtration first time; Corrosion inhibiter after the filtration after plunger displacement pump 38 pressurizes, flows to manifold 37 by ball valve 35 and pipeline 34, and the ball valve 19 that is provided with on manifold 37 is again adjusted flows, and the high pressure filter 20 that flows to the filling Head Sections by flap valve 18 carries out the filtration second time of corrosion inhibiter; Corrosion inhibiter through twice filtration flows to filling head nozzle 33 by stop valve 23, four opening manifolds 27 and gate valve 30, corrosion inhibiter forms swirling flow and is atomized and is ejected in the pipeline 32 in filling head nozzle 33, corrosion inhibiter after the atomizing forms diaphragm more equably attached on the steel surface;

Stop: the running of first stop plunger pump 38, close the

stop valve

35,19,23 and 30 on the main flow pipeline then sequentially, stop the operation of this device.

Claims

1, a kind of inhibiter continuous injection apparatus comprises material storage, metering filling, it is characterized in that: the present invention includes raw material storage district, metering filling district and three parts of filling Head Section:

A, described raw material storage district are made of corrosion inhibiter bucket, measuring pump and pipeline, and the entrance point of measuring pump links to each other with the corrosion inhibiter bucket, and the port of export links to each other with measuring tank;

B, described metering filling district are made up of measuring tank, strainer, plunger displacement pump, valve and connecting line, the lower end of measuring tank is connected with strainer, strainer is connected with the arrival end of plunger displacement pump, the port of export of plunger displacement pump links to each other with manifold, manifold one tunnel is connected with the filling Head Section, another road connects the measuring tank top, is connected with safety valve on the pipeline of manifold connection measuring tank, is provided with stop valve and pressure meter in the centre of manifold;

C, described filling Head Section are made up of high pressure filter, four opening manifolds, filling head nozzle, stop valve, gate valve and pipeline, high pressure filter links to each other with four open tubes remittance arrival end, the four open tubes remittance port of export is connected with the filling head nozzle, the one side on four opening manifold both sides connects a stop valve, and another side connects a stop valve and a pressure meter.

2, inhibiter continuous injection apparatus according to claim 1, it is characterized in that: described filling head nozzle is by the ejector tube, ejector cap and sealing ring are formed, ejector cap is connected by the front end of screw thread with the ejector tube, the external diameter of ejector tube front end is less than the internal diameter of ejector cap, between ejector cap and ejector tube, be provided with sealing ring, front end at ejector tube endoporus tangentially has aperture, the front end of aperture is provided with and the tangential identical spiral grooves of aperture, the circumference foremost of ejector tube is provided with tangential opening, and the rotation direction of tangential opening is opposite with the rotation direction of aperture.

3, inhibiter continuous injection apparatus according to claim 1 is characterized in that: the valve and the equipment in described metering filling district collect on the skid base.