CN2357127Y - Electric heater for high-pressure natural gas well head - Google Patents

Abstract

The utility model relates to an electric heater for a high-pressure natural gas well head, which is suitable for heating of the high-pressure natural gas well head. An inner pipe, a heat pipe, and an outer pipe are seamless steel pipes and are welded with a circular ring plate into a pipe-in-pipe structure with three layers of cavities, the inner pipe is communicated with the well head, an induction heater is arranged between the inner pipe and the heat pipe, the outer pipe and an outer conveying pipe, the inner pipe is communicated with an inner sleeve of a gas nozzle sleeve through clip heads, a medium pipe filled with chemical composite medium ZGM is communicated with an outer sleeve of the gas nozzle sleeve, the induction heater is arranged on the outer side of the medium pipe, and the space between the inner sleeve and the outer sleeve is communicated with the outer pipe thorough a short pipe. The utility model has the advantages of high heat efficiency, energy saving, reliable working, no environmental pollution, etc.

Description

A kind of high-pressure natural gas well head electricity consumption heater

The utility model relates to a kind of high-pressure natural gas well head electricity consumption heater, is applicable to the heating of scaled high-pressure natural gas well well head, to guarantee the outer defeated of natural gas.

The heating of existing natural gas well well head is to adopt the water jacket furnace heating, and its shortcoming is that the water jacket furnace thermal efficiency is low, is no more than 40%, contaminated environment, and operational reliability is poor, and labour intensity is big.

For overcoming above-mentioned shortcoming, the utility model provides a kind of thermal efficiency height, pollution-free, good reliability, high-pressure natural gas well head electricity consumption heater easy for installation.

It is as follows to finish the technical measures that the utility model task taked: this device is arranged to the tube-in-tube structure, interior pipe, heat pipe, outer tube is that seamless steel pipe and Circular Plate welding constitute three layers of cavity, interior pipe is communicated with the natural gas well head, be provided with induction heater between interior pipe and heat pipe, with the natural gas in the pipe in heating, outer tube is communicated with outer defeated pipe, interior pipe is chewed with gas and gas is chewed in the cover and overlapped and be communicated with through the clip head, the medium tube that is filled with superconduct heat media is communicated with the overcoat that gas is chewed cover, induction heater outside the medium tube is after connecting power supply, coil heating, produced simultaneously high-intensity magnetic field makes the medium tube heating, and rapidly heat is passed to gas and chew in the interlayer cavity of cover a natural gas of chewing out in the face of gas and heat, prevent that it from freezing, the pipeline that natural gas via clip head connects in the air cavity of via interlayer cavity heating simultaneously enters outer tube, through the gas outlet, outer defeated pipe transfers out.

Fig. 1 is the utility model structure cross-sectional schematic, and Fig. 2 is the utility model power circuit principle figure, and Fig. 3 is that components and parts are arranged schematic diagram in the utility model electric control box.

In conjunction with the accompanying drawings structure of the present utility model and embodiment are described as follows: this device is by constituting with the lower part,

Structure division: the air inlet port 1 that is communicated with production tree, with interior tracheae 2 welding, heat pipe 3 is by the Circular Plate cylindrical welding at seamless steel pipe and two ends, the annulus plate hole constitutes with interior tracheae cylindrical welding respectively, in heat pipe, be provided with induction heater coils 6, anti-explosion terminal box 12 through being fixed on the heat pipe is electrically connected with the cable 10 of electric control box 11, outer tube 7 is by the Circular Plate cylindrical welding at seamless steel pipe and two ends, the annulus plate hole constitutes with the welding of heat pipe cylindrical respectively, above near the outer tube the gas outlet 4, be welded with the thermometric pipe box, place temperature tube 5 in the cover, interior tracheae and commercially available clip head A welding, be communicated with bend pipe, gas in clip head and gas are chewed cover on the cover 81 is chewed 13 and is communicated with, the interior cover other end is provided with screwed hole, B is threaded with the technology plug, it is fixing with closed cavity 83 with the technology plug after chewing to turn gas through screwed hole, be provided with overcoat 82 in interior cover outside, constitute by seamless steel pipe and the welding of two terminal circle ring flat-plate, interior cover upside is provided with hole and short tube welding, make inner chamber 83 and interlayer cavity separate airtight, the overcoat upside is provided with aperture short tube and the welding of clip head, clip head and outer tube welding, inner chamber is communicated with outer tube, it is Ф 5～Ф 8 that gas is chewed straight warp, and gas is chewed with air inlet pipe and communicated, and pressure is tens to 100kg/cm ²So gas is chewed cover and is connected with pipeline and has adopted high pressure clip (commercially available prod, not shown) and clip head (commercially available prod), be communicated with external transport pipeline with the gas outlet 4 of outer tube welding, the overcoat lower-side hole is communicated with the openend welding of the medium tube 9 that is injected with the chemically composited medium of ZGM, and interlayer cavity and medium tube constitute the chemical mediator working chamber of sealing, and the medium tube peripheral hardware has coil 91, be provided with protective sleeve 92 outside it, the cable 10 of electric control box 11 is electrically connected with coil 91;

Electrical appliance part: the used power supply of induction heater is 50HZ 380V/220V, heater winding 6 is divided into three sections, every section two taps link to each other with the two-phase of three-phase electricity through contact, the air switch DZ1 of relay CJ respectively, heater winding 91 links to each other with the arbitrary of three-phase electricity through the contact of air switch DZ2, DZ1, relay CJ, the 220V of the arbitrary and N of three-phase electricity end is electrically connected with digital display regulator T through fuse 1RD, K switch 1, temperature element F place induction heater coils 6 near; 220V is through 1RD, and K switch 2 connects shutdown switch TA manually the time, starting switch QA, and collateral contact CJ connects relay CJ again, and contact DL, T connect relay CJ when K2 is positioned at automatic catch, contact DL, T; The winding L H of electric current relay DL is serially connected with three-phase electricity arbitrary mutually in; when electric current surpasses setting value, the winding L H of relay DL is serially connected with three-phase electricity arbitrary mutually in, when electric current surpasses setting value; relay DL starts; contact DL disconnects, relay CJ outage, and contact CJ disconnects main power source; thereby protected induction heater; electric control box 11 is casings of being made by angle steel and sheet iron plate, and all electrical equipment all is fixed on the interior bakelite plate of case, as shown in Figure 3.

During work, close a switch DZ1 and DZ2, K1 again closes a switch; make the charged and set temperature value thereon of digital display regulator T, K switch 2 is incorporated into manual position, press QA; send electricity to heating apparatus, check errorless after, press TA and shut down; K switch 2 is incorporated into automated location, and adjusting apparatus T realizes control heating automatically according to temperature element F measured temperature, has a power failure when reaching design temperature; when being lower than design temperature; continue power supply, as be short-circuited or during singlephase earth fault, DZ1, DZ2 tripping operation shields.

Induction heater 6 is after energising, and interior tracheae, heat pipe, outer tube all generate heat under the effect of magnetic field, and heat is heated by the gas in radiation and the internal tracheae of conduction; The gas of heating enters gas and chews by coil 91 and medium tube and undertaken heating the second time, chews the space that natural gas that cover comes out enters between heat pipe and outer tube by gas and is heated for the third time, enters external transport pipeline by the gas outlet again, thereby has realized that heating of natural gas is outer defeated.

The experiment proved that: the thermal efficiency of the present utility model surpasses 90%.Energy-saving effect is obvious; Compare with electrical resistance heating, service life is long, and reliable operation; Not influenced by external conditions such as weather; Free from environmental pollution; Alleviating intensity of workers, is a kind of desirable well head electric heating equipment.

Claims (2)

1, a kind of high-pressure natural gas well head electricity consumption heater, it is characterized in that, this device is by constituting with the lower part, structure division: air inlet port that is communicated with production tree (1) and interior tracheae (2) welding, heat pipe (3) is by the Circular Plate cylindrical welding at seamless steel pipe and two ends, the annulus plate hole constitutes with interior tracheae cylindrical welding respectively, in heat pipe, be provided with induction heater coils (6), anti-explosion terminal box (12) through being fixed on the heat pipe is electrically connected with the cable (10) of electric control box (11), outer tube (7) is by the Circular Plate cylindrical welding at seamless steel pipe and two ends, the annulus plate hole constitutes with the welding of heat pipe cylindrical respectively, near gas outlet (4) outer tube top is welded with the thermometric pipe box, place temperature tube (5) in the cover, interior tracheae and clip head (A) welding, be communicated with bend pipe, gas in clip head and gas are chewed cover on the cover (81) is chewed (13) and is communicated with, the interior cover other end is provided with screwed hole, (B) is threaded with the technology plug, be provided with overcoat (82) in interior cover outside, constitute by seamless steel pipe and the welding of two terminal circle ring flat-plate, interior cover upside is provided with hole and short tube welding, make inner chamber (83) and interlayer cavity separate airtight, the overcoat upside is provided with aperture short tube and the welding of clip head, clip head and outer tube welding, inner chamber is communicated with outer tube, be communicated with external transport pipeline with the gas outlet (4) of outer tube welding, the overcoat lower-side hole is communicated with the openend welding of the medium tube that is injected with the chemically composited medium of ZGM (9), interlayer cavity and medium tube constitute the chemical mediator working chamber of sealing, the outer coil (91) of medium tube is electrically connected with the cable (10) of electric control box, and the coil outside is provided with protective sleeve (92); Electrical appliance part: the used power supply of induction heater is 50HZ 380V/220V, heater winding (6) is divided into three sections, every section two tap respectively through the contact of relay (CJ) (CJ), air switch (DZ1) links to each other with the two-phase of three-phase electricity, heater winding (91) links to each other with the arbitrary of three-phase electricity through air switch (DZ2), (DZ1), relay contact (CJ), the 220V of the arbitrary and N end of three-phase electricity is electrically connected with digital display regulator (T) through fuse (1RD), switch (K1), and its temperature element (F) places near the induction heater coils (6); 220V when manually keeping off, connects shutdown switch (TA) through fuse (1RD), switch (K2), starting switch (QA), and collateral contact (CJ) connects relay (CJ), and contact (DL), (T), K2 connect relay (CJ) when automatic catch, contact (DL), (T); The winding (LH) of electric current relay (DL) is serially connected with three-phase electricity arbitrary mutually in.

2, by the described electric heater unit of claim 1, it is characterized in that it is Ф 5～Ф 8 that gas is chewed diameter.

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