RU2236649C1 - Hot-water boiler - Google Patents

Abstract

FIELD: oil producing industry.

SUBSTANCE: invention is designed for heating water and oil. Proposed hot-water boiler has housing, furnace chamber, manifold with smoke tube, fire tubes, connected by inlet sections with furnace chamber and by outlet sections with smoke tube manifold. Housing is furnished with device to provide circulation of oil and made in form of coil. Furnace chamber is located out-side housing, being rigidly connected with housing from side of inlet sections of fire tubes, and is furnished with burner device located in its central end face part. Moreover, furnace chamber is of tube-in-tube design, being furnished from in side with circulation tubes located lengthwise in steps for circulation of water between furnace chamber and housing filled with water. Furnace chamber is furnished with air jacket connected with air branch pipe to feed air into low and mean pressure burner through fan.

EFFECT: enlarged operating capabilities of hot-water boiler, increased periods between overhauls.

2 cl, 3 dwg

Description

The proposal relates to the oil industry, in particular to the transportation of oil, and can be used in the preparation of oil in the fields to reduce the viscosity of well products during pumping to destinations.

A well-known hot water boiler containing a housing with a fire chamber, smoke tubes communicated from the entrance to them with a fire chamber, and a water chamber, the smoke tubes and a water chamber being combined into two autonomous units, an external and an internal, interconnected by a flange connection , the water chamber is made in the form of a system of heat exchange tubes communicated with each other through a system of tangentially mounted curvilinear nozzles, with each nozzle on the outlet side of it being made in the form of a slot of the diffuser channel, smoke tubes are installed inside the heat exchanger tubes, while the smoke tubes of the outdoor and indoor units are interconnected by means of rotary chambers made in the housing with the formation of a three-way traction system, from the outer surface the smoke tubes are made with screw guide rails, and from the inner side the surfaces in the chimneys are made of two-way screw cutting with the formation of ridges of variable height with a reversible direction of swirling the product flow s combustion inside the fire tubes, wherein the heat exchange tubes from the reservoir caps are provided with embossments, by means of which the heat exchange tubes communicate with manifold [see. RU patent No. 2173433, class F 24 N 1/00 from 03.11.2000, publ. 09/10/2001].

The disadvantages of the device are the complexity of the design, the limitations of its use, since in the case of use in the oil fields, additional arrangement is required, for example, the presence of heat exchangers, additional rooms, etc.

The closest in technical essence and the achieved result to the proposed hot water boiler is a hot water boiler containing a water volume enclosed in a sealed enclosure, inside which there is a heat chamber and smoke tubes communicated by the inlet sections with the fire chamber and the outlet sections with a collector connected to the chimney moreover, the boiler is equipped with heating elements such as Field tubes, each outer pipe of which is placed with a certain annular gap in the smoke tube, the inner pipes being the starting ends are connected to the feed water supply pipe, and the open ends of the outer pipes are connected to the boiler water volume [see patent RU No. 2116579, class F 24 H 1/00 of 01/06/1997, publ. July 27, 1998].

The device, in comparison with the analogue is less simple.

The disadvantages of the device are the limited use due to material costs when used in the oil field, the complexity of the design in the manufacture, operation and repair due to clogging of smoke pipes by combustion products when using associated hydrogen sulfide gas.

The technical task to be solved is to expand the functionality of the boiler by using it in oil fields to reduce viscosity during pumping of well products, for example, to oil treatment plants, as well as simplifying the design that allows working with associated gas of low and medium pressure, including and hydrogen sulfide-containing, reducing the overhaul period by eliminating the clogging of chimney pipes with combustion products.

The problem is solved by the described hot water boiler containing a water volume enclosed in a housing, a fire chamber, a chimney collector, smoke pipes, the inlet sections of which are connected to the fire chamber, and the weekend sections - to the chimney collector.

New is that the casing is additionally equipped with a device for circulating the transported medium, made in the form of a coil, and the heat chamber is located outside the casing and is rigidly connected to it from the side of the inlet sections of the smoke tubes and is equipped with a burner device located in its central end part, the fire chamber is made according to the “pipe in pipe” principle, is equipped inside with circulation tubes arranged stepwise along the pipe to circulate water from the flame chamber to a housing with enclosed water volume IOM and rigidly connected to the body of the boiler, in addition, the flame chamber is provided with an air shroud coupled to the air supply nozzle in the burner of low and medium pressure through the fan.

Also new is the fact that the length of the device for circulating the transported medium is 120-154 m with a pipe diameter of 114 mm and is directly dependent on the volume of the boiler.

The combination of distinctive features allows you to expand the functionality of the boiler by operating on associated gas of low and medium pressure, to reduce the overhaul period, since the products of combustion of the associated (hydrogen sulfide-containing) gas do not settle on the walls of the smoke pipes, but are immediately carried out by an air or steam stream into the atmosphere to reduce material costs, since for the effective operation of the device associated gas is used, the heating of the well’s production is not by special means, but due to cooling ia the outer surface of the combustion chamber.

An analysis of known similar solutions from the patent and scientific and technical literature allows us to conclude that there are no signs in them that are similar to the distinctive signs in the claimed object, i.e. on the compliance of the proposed solutions to the criteria of the invention “inventive step”.

Figure 1 shows a General view of the boiler with a frontal section; figure 2 is a section aa in figure 1; figure 3 - section bb in figure 2.

The device contains (see Fig. 1, Fig. 2) a housing 1 with a enclosed water volume 2, a fire chamber 3, a collector with a chimney 4, smoke tubes 5, the input sections 6 of which are connected to the fire chamber 3, and the output 7 to a chimney collector 4. The housing 1 is additionally equipped with a device 8 for circulating the transported medium 9, made in the form of a coil.

The fire chamber 3 is located outside the housing 1 and is rigidly connected to it from the side of the inlet sections 6 of the smoke pipes 5 and is equipped with a burner device 10 located in its central end part, while the fire chamber 3 is made according to the “pipe in pipe” principle, provided with circulation tubes 11 arranged stepwise along the length for circulating water from the flame chamber 3 into the housing 1 with the enclosed water volume 2 and is rigidly connected to the boiler housing. In addition, the fire chamber 3 is equipped with an air jacket 12 connected to the nozzle for supplying air 13 to the burner 10 of low and medium pressure through the fan 14. The length of the device 8 for circulating the transported medium 9 is 120-154 m with a pipe diameter of 114 mm and is in a straight line depending on the volume of the boiler.

The hot water boiler operates as follows.

Associated hydrogen sulfide-containing gas with a hydrogen sulfide content of 3.1% under a pressure of 0.07 atm enters sequentially first into the combustion chamber of the burner 10, mixes with air coming from the air supply pipe 13 through the fan 14, then into the heat chamber 3, where it completely burns, and the heat generated in this case enters through the inlet sections 6 of the smoke pipes 5, is directed through their outlet 7 sections to the collector with the chimney 4, while the smoke pipes 5 are not clogged by the products of combustion of associated hydrogen sulfide-containing gas, which uschestvenno reduces turnaround time. Heat through smoke tubes is successively transferred to the water volume 2 enclosed in the housing 1, and the device 8 for circulating the transported medium 9 (oil), made in the form of a coil.

The studies showed that the coil 9, along which the oil moves, should be 120-154 m long with a pipe diameter of 114 mm. With a coil length of less than 120 m, poor-quality heating of oil is observed with all the ensuing consequences, an increase in the coil length of more than 154 m leads to an increase in resistance in it, there is a need to increase the dimensions of the boiler, which is associated with additional material costs. The location of the fire chamber 3 outside the housing 1 and its placement on the side of the inlet sections 6 of the smoke tubes 5, supplying it with a burner device 10 located in its central end part, performing it according to the “pipe in pipe” principle, installing inside the circulation pipes 11 located along stepwise length (see Fig. 3), ensures the uniformity of water heating due to uniform cooling of the outer surface of the flame chamber 3 and the additional heating area, and also eliminates the stagnation of water in the flame chamber e. The supply of the flame chamber 3 with the air casing 12 and its connection with the air supply pipe 13 to the burner 10 through the fan 14 allows to more fully cool the outer surface of the flame pipe 3 and increase the calorific value of the burner 10, i.e. increase its efficiency, especially in the cold season, which generally stabilizes the processes of heating the transported medium (oil) and pumping it to destinations.

The technical and economic efficiency of the proposed hot water boiler is due to the expansion of functional capabilities - work with associated gas of low and medium pressure at any time of the year, simplifying the design, both in manufacturing and during operation and repair, as well as reducing material costs, since the heating is transported production occurs due to the cooling of the outer surface of the heat chamber, and not by special means with optimal operation of the boiler.

Claims (2)

1. A water boiler containing a water volume enclosed in a housing, a fire chamber, a chimney collector, smoke tubes, the inlet sections of which are connected to the fire chamber, and the weekend ones with a chimney collector, characterized in that the casing is additionally equipped with an oil circulation device made in the form of a coil, and the heat chamber is located outside the housing and is rigidly connected to it from the side of the inlet sections of the smoke pipes and is equipped with a burner device located in its central end part, while The combustion chamber is made according to the “pipe in pipe” principle, is equipped with circulation tubes inside which are arranged stepwise in length for circulating water from the flame chamber to the enclosure with enclosed water volume, in addition, the flame chamber is equipped with an air casing connected to the low air burner nozzle and medium pressure through the fan. 2. The hot water boiler according to claim 1, characterized in that the length of the device for oil circulation is 120-154 m, with a pipe diameter of 114 mm and is directly dependent on the volume of the hot water boiler.

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