CN2149552Y - Waste heat boiler for oil-field drilling diesel engine - Google Patents

Abstract

The utility model discloses a waste heat boiler for oil-field drilling diesel engine which is such a waste heat recovery device that the high-temperature waste fume exhausted by the drilling diesel engine is utilized to generate steam. The waste heat boiler for oil-field drilling diesel engine is characterized in that the inside of a boiler drum body is provided with a front smoke box, a back smoke box, a control circuit and a smoke tube group, wherein, the smoke tube group is composed of a plurality of threaded tubes and can make the fume do longitudinal wash. The front smoke box and the back smoke box are arranged on both sides of the boiler drum body. The control circuit can self control intensively and display each technical parameter by digital. The waste heat boiler for oil-field drilling diesel engine, having the advantages of energy saving, convenient operation and use, high thermal efficiency and easy deposition removing, can replace the present well field boiler using crude oil as the fuel and is an ideal heating boiler which can guarantee the regular production and living of the drilling team in the winter.

Description

Waste heat boiler for oil-field drilling diesel engine

The utility model relates to a kind of oil field welldrilling diesel residual heat boiler, specifically field drilling is collected the device of changing steam as the thermal source of steam boiler with the waste heat of diesel emission, it is specially adapted to the usefulness of life in winter of oil drilling team and heating.

Current, produce winter in order to ensure oil drilling team to the north of the Changjiang river, its life provides well site fuel oil locomotive stove with heating specially with hot supply, according to incompletely statistics, a Liaohe Oil Field will consume 10886 tons of crude oil, and as seen its energy resource consumption is big, and for drilling well, all there is three 1200 horsepowers diesel engine alternation in each drilling crew, during every diesel engine operate as normal, can give off 2435M ³The high-temperature flue gas of/h temperature about 380 ℃, the heat energy that is equivalent to 0.653 megawatt, just wasted in vain, the patent No. 88200532.4 " drilling diesel engine smoke evacuation retracting device ", because its heating surface adopts transversal flow convection current water pipe structure, and on pipe, install fin additional to increase the heat exchange amount, but contain a large amount of free carbon blacks in the flue gas that diesel engine is discharged, make and in convection bank, have the thick carbon black black dirt of 5～10mm, can't remove, cause heat-transfer effect to descend greatly, influence boiler output, result of use is not good, simultaneously, above-mentioned patent does not obtain the system control to the variation at the various technical parameters in when work, therefore can not reach to give the phase effect and use extremely inconvenient.

The purpose of this utility model is to overcome and avoids above-mentioned shortcoming and defect part of the prior art and a kind of oil field welldrilling diesel residual heat boiler is provided, and reaches energy savings and purpose easy to use.

The purpose of this utility model can realize by following mechanism, oil field welldrilling diesel residual heat boiler comprises the diesel engine of band smoke evacuation tracheae, smoke valve, horizontal flue, the drum body, gas-distributing cylinder, afterburning is with burner hearth and afterburning burner, air-introduced machine, chimney, water pump, water tank, switch board is formed, special feature of the present utility model be afterburning place with the upper furnace accumbency have steam (vapor) outlet in the drum body of water is housed, in the drum body, be assembled with parallel with drum body horizontal axis form to have by several screwed pipes make flue gas do the smoke pipe group of parallel baffled, smoke pipe group's an end communication seals is loaded on the front smoke box that can roll over cover plate that has of drum body one side, is divided into dividing plate and smoke pipe group's other end communication seals is loaded on the interior of drum body opposite side, the back smoke box of lower inner cavity.In order to realize selection and adjustment and control automatically to the parameter of each station.Technology special feature of the present utility model also be by the workplace of dress drum body by the pressure that is equipped with drum body, gas-distributing cylinder, diesel smoke pipe and smoke inlet temperature and can regulate flue blast and air-introduced machine air quantity, the afterburning fuel consumption of burner, the cabinet system circuit that concentrates on the demonstration of electrical control cubicles numeral that the height of the output of supply-water pump and water level meter connects with circuit.

Embodiment of the present utility model is described in further detail in conjunction with Fig. 1, Fig. 2:

Fig. 1 is a structure assembling schematic diagram of the present utility model.

Fig. 2 is the circuit diagram that can control each important technological parameters automatically.

By Fig. 1, shown in Figure 2, the utility model be a waste heat boiler be again an oil burning boiler, also be a waste heat, fuel oil multi-fuel fired boiler, but in combustion chamber 2 by the burner 1 that has afterburning to use, when diesel engine is not worked nothing discharging waste heat flue gas, it can burn separately and give heating kettle cylindrical shell 5, and the numeral that while burner 1 can also be looked the rise and fall of smoke inlet temperature shows to come auto-control to increase or the minimizing quantity combusted.Accumbency is placed on the drum body 5 on the combustion chamber 2, upper top is equipped with delivering vapor outlet 11, and be provided with parallel with the drum body horizontal axis smoke pipe group who forms with several screwed pipes 4 in the drum body 5, the last inner chamber that contains the back smoke box 8 that the waste heat flue gas separates with dividing plate 14 in entering along horizontal flue 6 by smoke valve 7 from diesel smoke pipe 12 discharging is entered heat in each screwed pipe 4 and be loaded on drum body 5 interior water and become steam, flue gas is made the structure of parallel baffled and has broken custom to be used for having adopted heat-transfer effect flue gas transversal flow structure preferably on the boiler type of furnace in convection tube at this moment, this be because: adopt the flue gas parallel baffled, can be easy to remove effectively the dust stratification in the pipe, as long as one opens the cover plate rolled over 13 of front smoke box 3, just can clear away the carbon black dust stratification that adheres to tube wall easily, and guarantee that boiler heating surface is in good heat exchange situation all the time, and guarantee that exerting oneself of whole boiler is reliable, in addition, have bigger drum and have certain vapour ability of holding, be specially adapted to the situation of this fume side varying duty, simultaneously, all smoke pipes are changed into screwed pipe 4 by light pipe and replacing, because screwed pipe 4 is current new technologies that should be used for Boiler smoke tube, it has heat-transfer effect preferably than common light pipe, a screwed pipe is equivalent to the heat exchange amount of nearly two light pipes, when making the boiler of identical evaporation capacity, can make the boiler structure compactness, volume is little, in light weight, after the flue gas through heat exchange enters front smoke box 3, be subjected to the effect of the adjustable air-introduced machine 10 of high pressure, make these flue gases proceed heat exchange along a part of smoke pipe, enter then in the lower inner cavity of back smoke box 8, just can and drain in the atmosphere by air-introduced machine 10 introducing chimneys 15, so circulation endlessly, the waste heat flue gas that makes diesel emission heats through smoke pipe and is loaded on the water in the drum body 5 and becomes steam and supplied with the life in the winter time of oil drilling team and the usefulness of heating.Can adjust waste heat boiler each technical parameter in when work in order to reach better, be provided with automatic control circuit switch board 16, connect by circuit respectively in circuit switch board 16, the variation of the steam pressure in drum body 5 and gas-distributing cylinder 19 shows with electro connecting pressure gauge 17,18.The flue-gas temperature of diesel smoke pipe and enter the back smoke box 8 smoke inlet variation of temperature value respectively with thermal resistance 22,21 show, pressure transmitter 23, can show flue gas pressures in the smoke box 8 of back, and according to the variation of this pressure, by regulating the air quantity size of air-introduced machine 10, kept the flue gas negative pressure in the smoke box 8 of back, it is unobstructed to reach exhaust with the flue gas in the smoke evacuation tracheae 12 that guarantees diesel engine, make diesel engine be able to reliability service, simultaneously, controlable electric current also can be shown control to the water pump 24 and the water level meter height of fuel consumption that afterburner burnt and the water of supplying with drum body 5, so, waste heat boiler is when operation, and the important technological parameters of each station all can show in electrical control cubicles, and adjusted timely, make waste heat boiler be in stable normal operative condition.

The utility model compared with prior art has following advantages:

1, it not only replaces the at present locomotive formula well site boiler take crude oil as fuel, takes full advantage of the waste heat generating steam of diesel smoke, energy savings, and when a large amount of steam of needs, waste heat boiler can produce a large amount of steam by the afterburner burning.

2, be easy to remove dust stratification, thermal efficiency height.

3, control and the demonstration that the technological parameter of each station is concentrated, easy operating, extremely easy to use.

Claims (1)

1, a kind of oil field welldrilling diesel residual heat boiler, the diesel engine that comprises band smoke evacuation tracheae, smoke valve, horizontal flue, the drum body, gas-distributing cylinder, the afterburning burner hearth, the afterburning burner, air-introduced machine, chimney, water pump, water tank, switch board is formed, of the present utility model be characterised in that afterburning place with the upper furnace accumbency have steam (vapor) outlet in the drum body of water is housed, be assembled with in the drum body that drum body horizontal axis is parallel is made of the smoke pipe group who flue gas is had do parallel baffled several screwed pipes, smoke pipe group's an end communication seals is loaded on the front smoke box that can roll over cover plate that has of drum body one side, and being loaded on the interior of drum body opposite side, smoke pipe group's other end communication seals is divided into dividing plate, the back smoke box of lower inner cavity, and in the workplace of drum body by being equipped with to the drum body, the pressure of gas-distributing cylinder, diesel smoke pipe and smoke inlet temperature and can regulate the flue blast, air-introduced machine air quantity afterburning burner fuel consumption, the height of the output of supply-water pump and water level meter can be controlled in the electrical control cubicles and the digital controlable electric current that shows automatically with concentrating on of circuit connection.