CN212806695U

CN212806695U - Heat exchanger suitable for offshore oil and gas exploitation

Info

Publication number: CN212806695U
Application number: CN202021820832.5U
Authority: CN
Inventors: 吕健
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-03-26
Anticipated expiration: 2030-08-27

Abstract

The utility model belongs to the technical field of the heat exchanger technique and specifically relates to a heat exchanger suitable for marine oil gas exploitation is related to. The heat exchanger suitable for offshore oil and gas exploitation comprises a cylinder body, a sealing plate and a spiral body; a first sealing plate and a second sealing plate are respectively arranged at two ends of the spiral body; the spiral body is arranged in the cylinder body and is coaxial with the cylinder body; a spiral flow channel extending from one end of the spiral body to the other end is arranged in the spiral body, one end of the spiral flow channel is positioned on the first sealing plate, and the other end of the spiral flow channel is positioned on the second sealing plate; the outer edge of the spiral body is abutted against the inner wall of the cylinder body, and a shell pass is formed among the spiral body, the cylinder body and the sealing plate; and the cylinder body is provided with a shell pass inlet and a shell pass outlet which are communicated with the shell pass. Compared with a tube bundle flow channel, the heat exchanger has the advantages that the resistance greatly reduced when the hot kerosene flows in the spiral flow channel reduces the power loss in the heat exchange process, and the energy consumption of the hot kerosene pressurizing equipment is reduced.

Description

Heat exchanger suitable for offshore oil and gas exploitation

Technical Field

The utility model belongs to the technical field of the heat exchanger technique and specifically relates to a heat exchanger suitable for marine oil gas exploitation is related to.

Background

At present, a coil pipe type heat medium heat exchanger (refer to a multi-shell-and-tube heat exchanger disclosed in application number CN 201210134717.6) is generally adopted in a crude oil heater in an offshore oil exploitation facility, and the heat exchanger takes heat conducting oil as a heat carrier, and the heat conducting oil flows through a coil pipe in the heat exchanger, so that the heating temperature of a boiler is transferred to a heated medium between a tube pass and a shell pass through thermal contact, thermal radiation and thermal convection, and the purpose of heating the heated medium is achieved.

The coil type heat medium heat exchanger has the defects that:

1. the internal structure is as follows:

an angle flow channel is formed between the baffle and the coil pipe and between the baffle and the shell pass, so that vortex is easily formed, the flowing speed of the fluid is reduced, and solid-phase impurities and jelly are deposited;

due to the arrangement and layout of the coil pipes, the gaps among the coil pipes are narrow, and the closer to the arrangement center, the slower the relative flow velocity of the heated medium is, the more easily the local high temperature of the pipe pass is caused, so that the outer wall of the coil pipe is coked and hardened, the heat exchange efficiency is reduced, and the deterioration of the heat medium is accelerated;

2. hoisting is inconvenient:

the fixed hoisting point is not available, and the inclined pulling are common during hoisting, so that the deformation, the damage and the like of the coil pipe are easily caused;

3. dredging and cleaning:

due to narrow space among the coil pipes caused by pipe pass arrangement and coking and hardening caused by local high temperature, violent knocking, prying, high-pressure flushing and other violent modes exist in dredging the coil pipes, and adverse effects such as deformation, damage, leakage and the like of the coil pipes are easily caused. The cleaning process is slow, so that the working efficiency is influenced;

4. detection and leakage stoppage:

the corrosion prevention detection and the leak point investigation caused by the narrow coil clearance can be finished only in a single mode of a general pressure test, and once the leak point is confirmed, the leak can be stopped only by plugging the whole coil. When having the cost consumption, further reduce heat exchange efficiency to there is the coil pipe pressure testing or after the equipment is put into operation, because the shutoff round pin head drops and leads to leaking stoppage failure risk.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a heat exchanger suitable for offshore oil gas exploitation, this heat exchanger can solve the big problem of circulation resistance.

The utility model provides a heat exchanger suitable for offshore oil and gas exploitation, which comprises a cylinder body, a sealing plate and a spiral body;

a first sealing plate and a second sealing plate are respectively arranged at two ends of the spiral body;

the spiral body is arranged in the cylinder body and is coaxial with the cylinder body;

a spiral flow channel extending from one end of the spiral body to the other end is arranged in the spiral body, one end of the spiral flow channel is positioned on the first sealing plate, and the other end of the spiral flow channel is positioned on the second sealing plate;

the outer edge of the spiral body is abutted against the inner wall of the cylinder body, and a shell pass is formed among the spiral body, the cylinder body and the sealing plate;

and the cylinder body is provided with a shell pass inlet and a shell pass outlet which are communicated with the shell pass.

Preferably, two ends of the cylinder are respectively provided with an end socket;

the two sealing heads are respectively provided with a tank top inlet and a tank bottom outlet of the spiral flow channel.

Preferably, the heat exchanger suitable for offshore oil and gas production further comprises a core column;

the spiral body is wound on the core column, and the spiral body and the core column are coaxially arranged.

Preferably, the both ends of stem extend to the outside of first shrouding and second shrouding respectively, and are provided with the hole for hoist on the stem.

Preferably, the hoisting hole is a through hole arranged on the core column.

Preferably, the shell side inlet is arranged at the lower part of the heat exchanger, and the shell side outlet is arranged at the upper part of the heat exchanger.

Preferably, a flow stabilizing plate with holes is arranged at the inlet of the shell side.

Preferably, the bottom of the shell side is provided with a bottom discharge port.

Preferably, the closing plate is connected with the cylinder in a sealing manner.

Preferably, the seal head is connected with the cylinder through a flange plate, and the seal plate is clamped between the seal head and the cylinder.

Has the advantages that:

in the use process of the heat exchanger provided by the embodiment, the heat medium circulates in the spiral flow channel, and the heated medium enters the shell pass from the shell pass inlet and is then discharged from the shell pass outlet. Heat exchange is carried out during circulation of the heating medium and the heated medium.

The heating medium and the heated medium pass through the linear flow channel, so that the occurrence of an angle flow channel is avoided, the formation of vortex and solid phase deposition is avoided, and the formation conditions of corrosion and a thermal blind area are avoided.

Compared with a tube bundle flow channel, the heat exchanger has the advantages that the resistance greatly reduced when the hot kerosene flows in the spiral flow channel reduces the power loss in the heat exchange process, and the energy consumption of the hot kerosene pressurizing equipment is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a heat exchanger suitable for offshore oil and gas production according to an embodiment of the present invention;

fig. 2 is a side view of the heat exchanger suitable for offshore oil and gas exploitation according to the embodiment of the present invention.

Description of reference numerals:

1: a barrel; 2: closing the plate; 3: a helical body; 4: a shell side inlet; 5: a shell-side outlet; 6: sealing the end; 7: a tank top inlet; 8: a tank bottom outlet; 9: a stem; 10: hoisting holes; 11: a bottom drain.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the present embodiment provides a heat exchanger suitable for offshore oil and gas exploitation, which includes a cylinder 1, a closing plate 2 and a spiral body 3.

The both ends of spirochete 3 are provided with first shrouding and second shrouding respectively, and spirochete 3 sets up in barrel 1, and with the coaxial setting of barrel 1.

The spiral runner that the one end of spirochaeta 3 extends to the other end is provided with to inside spirochaeta 3, and the one end of spiral runner is located first shrouding, and the other end of spiral runner is located the second shrouding.

The outer edge of the spiral body 3 is abutted against the inner wall of the cylinder body 1, and a shell pass is formed among the spiral body 3, the cylinder body 1 and the sealing plate 2. The cylinder body 1 is provided with a shell pass inlet 4 and a shell pass outlet 5 which are communicated with the shell pass.

In the use process of the heat exchanger provided by the embodiment, the heat medium circulates in the spiral flow channel, and the heated medium enters the shell pass from the shell pass inlet 4 and is then discharged from the shell pass outlet 5. Heat exchange is carried out during circulation of the heating medium and the heated medium.

The spiral body 3 is arranged in the cylinder body 1, and a middle flow passage formed between the spiral body 3 and the cylinder body 1 is also spiral. That is to say, the heating medium and the heated medium all pass through linear runner, avoid appearing the angle runner to avoid forming vortex and solid phase deposition, avoid corroding with the formation condition of hot blind area.

In the later stage of operation, along with the adhesion of oil-water dirt on the outer surface, the heat exchange area reduction rate of the spiral flow channel is far smaller than the heat exchange area reduction rate after coking and hardening between tube bundles.

The spiral flow channel is not easy to form local high temperature, and in addition, the surface can be prevented from being adsorbed by fluid through surface coating process and other modes, the surface coking and hardening are relieved, and the descaling and cleaning are convenient. The heat expansion and cold contraction resistance of specific materials are added, and the sealing gap between the spiral body and the shell pass is accurate.

Two ends of the cylinder body 1 are respectively provided with a seal head 6, and the two seal heads 6 are respectively provided with a tank top inlet 7 and a tank bottom outlet 8 of a spiral flow channel.

The heat exchanger suitable for offshore oil and gas exploitation further comprises a core column 9, the spiral body 3 is wound on the core column 9, and the spiral body 3 and the core column 9 are coaxially arranged.

Specifically, the two ends of the core column 9 extend to the outer sides of the first sealing plate and the second sealing plate respectively, and hoisting holes 10 are formed in the core column 9.

The hoisting hole 10 is a through hole arranged at the end of the stem 9. With hole for hoist 10 with embedded mode setting on stem 9 for core 9 body is from taking the hoist and mount anchor point, reduces because of the physics damage risk that ligature, handling caused, and embedded hoisting point can reduce the resistance that produces when the oil stream flows through.

The shell side inlet 4 is arranged at the lower part of the heat exchanger, and the shell side outlet 5 is arranged at the upper part of the heat exchanger. A flow stabilizing plate with holes is arranged at the shell pass inlet 4.

A flow stabilizing plate with holes is additionally arranged at the shell pass inlet 4, so that the phenomenon that the heating is uneven due to vortex formation is avoided, and meanwhile, the erosion corrosion of the heating medium core caused by the over-high flow velocity is reduced.

The bottom of the shell side is provided with a bottom discharge port 11.

The conventional core back cleaning cycle can be changed from 1 time per year to 2 times per 3 years, and even 1 time per 2 years.

The operation space is sufficient, the operation mode is simple and convenient, and the operation time is short. Avoiding the construction period dragging and the physical damage of the heating medium core caused by violent construction and complicated means.

The closing plate 2 is connected with the cylinder 1 in a sealing way. The end socket 6 is connected with the cylinder 1 through a flange plate, and the sealing plate 2 is clamped between the end socket 6 and the cylinder 1.

The shrouding 2, head 6 and 1 cooperation structure of barrel of this kind of structure are convenient for the monitoring, the leaking stoppage in heat exchanger later stage.

The structure can provide sufficient monitoring space, and can adopt various detection modes such as physical flaw detection, chemical flaw detection, equipment flaw detection and the like. The point-to-point leakage point investigation and leakage plugging process can be realized, and the operation process is simple, convenient and quick.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A heat exchanger suitable for offshore oil and gas exploitation is characterized by comprising a cylinder body, a sealing plate and a spiral body;

2. The heat exchanger suitable for offshore oil and gas exploitation according to claim 1, wherein two ends of the cylinder are respectively provided with a sealing head;

3. The heat exchanger adapted for offshore hydrocarbon production of claim 1, further comprising a core column;

4. The heat exchanger suitable for offshore oil and gas exploitation according to claim 3, wherein two ends of the core column extend to the outer sides of the first sealing plate and the second sealing plate respectively, and hoisting holes are formed in the core column.

5. The heat exchanger suitable for offshore oil and gas exploitation according to claim 4, wherein the hoisting hole is a through hole provided on the core column.

6. The heat exchanger adapted for offshore hydrocarbon production according to claim 1, wherein the shell-side inlet is disposed at a lower portion of the heat exchanger and the shell-side outlet is disposed at an upper portion of the heat exchanger.

7. The heat exchanger adapted for offshore hydrocarbon production according to claim 1 or 6, wherein a flow stabilizer plate with holes is provided at the shell side inlet.

8. The heat exchanger adapted for offshore hydrocarbon production according to claim 1, wherein a bottom drain is provided at the bottom of the shell side.

9. The heat exchanger adapted for offshore hydrocarbon production according to claim 1, wherein the closure plate is sealingly connected to the barrel.

10. The heat exchanger adapted for offshore oil and gas production according to claim 2, wherein the head is connected to the barrel by a flange plate, and the sealing plate is clamped between the head and the barrel.