Water heater utilizing flue gas waste heat of offshore oilfield

Abstract

The utility model provides a water heater utilizing flue gas waste heat of an offshore oilfield, which relates to the technical field of water heaters, and comprises a heater main body, a filter frame, a telescopic piece and a connecting piece, the filter frame is arranged on the front side of a flue gas inlet end, a vertical filter screen is arranged in the filter frame, and the telescopic piece is arranged in the filter frame. The bottom end of the filter frame is provided with a through hole for the filter screen to penetrate through, a scraping strip is arranged in the through hole, a second connecting strip is fixed to the face, away from the filter screen, of the scraping strip, the telescopic piece is used for driving the scraping strip to stretch out and draw back, and the connecting piece is used for achieving detachable connection of the filter screen. When the first connecting strip is pulled down to detach the filter screen, the scraping strip can be attached to the filter screen through the electric telescopic rod, in the downward pulling process of the filter screen, the scraping strip can be used for scraping solid impurities attached to the filter screen, in the detaching process, synchronous scraping is carried out, and the follow-up cleaning workload can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater technical field especially is to utilize offshore oil field flue gas waste heat's water heater. BACKGROUND

[0002] Offshore oil field refers to the oil and gas field located in the ocean, they are usually located in the continental shelf or deeper sea area, the development of offshore oil usually refers to the oil exploration, exploitation, storage and transportation activities in the ocean, the development and production of these oil fields need special facilities and technology, offshore oil field flue gas refers to the exhaust gas produced after burning fuel (usually diesel, heavy oil or natural gas) in the operation of offshore oil field, especially in power station, heating furnace or other combustion equipment, these flue gas usually contains a large amount of heat energy, at the same time also contains some pollutants, such as sulfur dioxide (SO2), nitrogen oxides (NO x ), particulate matter (PM) and other harmful substances, and a large amount of heat is contained in these exhaust gas, part of which is discharged into the atmosphere in the form of high temperature flue gas.

[0003] In order to improve energy efficiency and reduce environmental impact, the existing offshore oil field flue gas waste heat is usually used to heat water to reduce the energy consumption of subsequent boiler water temperature rise, but at present, when the high temperature hot gas is introduced into the water heater to heat the water, the solid impurities contained in the high temperature flue gas will be partially left in the shell of the water heater, and the subsequent cleaning needs to remove the shell for cleaning, which is more troublesome and time-consuming. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems of prior art, the utility model provides a water heater utilizing offshore oil field flue gas waste heat.

[0005] The technical scheme of the utility model is as follows:

[0006] The water heater utilizing offshore oil field flue gas waste heat comprises a heater main body, the two ends of the heater main body are symmetrically provided with a flue gas inlet end and a flue gas outlet end, and a spiral water pipe is arranged in the heater main body, and further comprising:

[0007] The filter frame is installed on the front side of the flue gas inlet end, the inside of the filter frame is provided with a vertical filter screen, the bottom end of the filter frame is provided with a perforation for the filter screen to pass through, the inside of the perforation is provided with a scraping strip, and the side of the scraping strip away from the filter screen is fixedly connected with a second connecting strip;

[0008] The telescopic part is used to drive the scraping strip to stretch or shrink, so that the scraping strip is close to or away from the filter screen;

[0009] The connecting part is connected with the bottom end of the filter screen, and is used to realize the detachable connection of the filter screen.

[0010] Preferably, the inner side wall of the perforation is provided with a groove, and the second connecting strip is inserted and matched in the groove.

[0011] Preferably, the connecting piece comprises:

[0012] A supporting strip is fixed to the bottom end of the filter screen, and a first connecting strip is hingedly connected to both ends of the supporting strip.

[0013] Two fixed strips are symmetrically fixed to the two sides of the outer portion of the filter frame.

[0014] A limiting pin can penetrate the end portion of the first connecting strip and be embedded in the corresponding fixed strip.

[0015] Preferably, the telescopic piece comprises:

[0016] Two connecting rods are symmetrically connected to one end of the connecting strip away from the scraping strip, and the second end of the connecting rod extends to the outer portion of the filter frame.

[0017] A mounting strip is fixed to the outer end portion of the connecting rod.

[0018] An electric telescopic rod is mounted on the mounting strip, and the output end of the electric telescopic rod is connected to the filter frame.

[0019] Preferably, the heater body is further provided with a heat pipe bundle inside.

[0020] Preferably, the utility model further comprises a mounting rack, which is used for mounting the heater body, and the bottom end of the mounting rack is provided with a mounting hole.

[0021] Preferably, the outer wall of the heater body is provided with an inspection hole, and a cover is mounted at the inspection hole.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. When the utility model is used, the filter screen can filter solid impurities in high-temperature flue gas, so that the solid impurities are prevented from entering the heater body, and when the filter screen is pulled down and removed by the first connecting strip, the electric telescopic rod is used to make the scraping strip adhere to the filter screen, so that the solid impurities adhered to the filter screen are scraped off in the process of pulling down the filter screen, and the work load of subsequent cleaning is effectively reduced.

[0024] 2. When the utility model is used, the limiting of the limiting pin is released, the hingedly connected first connecting strip is rotated to face downward, and then the first connecting strip is pulled downward, so that the filter screen is pulled out of the perforation by the supporting strip, and the filter screen is conveniently and quickly removed.

[0025] After the filter is removed, the electric telescopic rod is used to retract the scraper bar so that the second connecting bar is completely embedded in the groove, which can maximize the opening of the perforation and facilitate the cleaning of residual solid impurities inside the filter frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a schematic structural diagram of the heater body of the utility model;

[0029] Figure 3 This is one of the cross-sectional structural diagrams of the filter frame of the present invention;

[0030] Figure 4 This is a schematic structural diagram of the telescopic member and the connecting member of the utility model;

[0031] Figure 5 This is a structural diagram of the filter frame of the utility model;

[0032] Figure 6 This is the second schematic cross-sectional view of the filter frame of the present invention.

[0033] In the figure: 1. Heater body; 2. Mounting frame; 3. Flue gas inlet; 4. Flue gas outlet;

[0034] 5. Filter frame; 51. Filter screen; 52. Perforation;

[0035] 6. Spiral water pipe;

[0036] 7. Telescopic member; 71. Connecting rod; 72. Mounting strip; 73. Electric telescopic rod;

[0037] 8. Connecting piece; 81. Support bar; 82. First connecting bar; 83. Fixing bar; 84. Limit pin;

[0038] 9. Sealing cover; 10. Scraping strip; 11. Second connecting strip; 12. Groove; 13. Heat pipe bundle. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present application.

[0040] The utility model provides a water heater of offshore oilfield flue gas waste heat utilization as shown in Figures 1-6 The utility model discloses a water heater of offshore oilfield flue gas waste heat utilization as shown in, including heater main body 1 and mounting bracket 2, mounting bracket 2 is used to install heater main body 1, and the bottom of mounting bracket 2 is equipped with mounting hole, and bolt passes through mounting hole can with mounting bracket 2 stable fixed, and the both ends of heater main body 1 are symmetrically equipped as flue gas inlet end 3 and flue gas outlet end 4, and heater main body 1 is equipped with spiral water pipe 6 inside, and the both ends of spiral water pipe 6 all go out from the shell of heater main body 1, preferably adopt the mode of water low in and high out, and heater main body 1 is also equipped with heat pipe bundle 13 inside, and heat pipe bundle 13 is the heat transfer element that realizes heat transfer by relying on the phase change of its inside working liquid, and heat pipe bundle 13 absorbs waste gas heat on the hot side, and passes heat to the working medium (liquid state) in the pipe, and the working medium is converted into steam in the form of evaporation and boiling after absorbing heat, and steam rises to the heat release side under the action of pressure difference, and simultaneously condenses into liquid and releases vaporization latent heat, and heat is transferred to the cold fluid of heat release side, and the condensed liquid returns to the hot side by gravity, and since heat pipe bundle 13 is vacuumized inside, so the working medium evaporates and boils very easily, and heat pipe bundle 13 starts rapidly and has very high heat conduction performance.

[0041] Through the above technical scheme: when heating water, the water to be heated is introduced from the bottom end of the spiral water pipe 6 and flows out from the upper end of the spiral water pipe 6, and the high-temperature flue gas is introduced from the flue gas inlet end 3 and discharged from the flue gas outlet end 4 after heat exchange with the water to be heated.

[0042] Further, the outer wall of the heater main body 1 is provided with an inspection hole, and a cover 9 is installed at the inspection hole.

[0043] Specifically, when maintenance is needed, the cover 9 can be opened by the staff, and the staff can perform maintenance through the inspection hole, which is more convenient and practical.

[0044] Reference Figure 1 and Figures 3-5As shown, the water heater utilizing waste heat from offshore oilfield flue gas further comprises a filter frame 5, a telescopic member 7 and a connecting member 8. The filter frame 5 is mounted on the front side of the flue gas inlet 3. The filter frames 5 are connected to each other via flanges, and a vertical filter screen 51 is provided inside the filter frame 5. The filter screen 51 is made of high-temperature resistant material and is used to filter solid impurities in the high-temperature flue gas to reduce the entry of solid impurities into the heater body 1. A through hole 52 is provided at the bottom end of the filter frame 5 for the filter screen 51 to pass through. The width of the through hole 52 is greater than the thickness of the filter screen 51. A scraper 10 is provided inside the hole 52 for scraping off solid impurities adhering to the filter 51. The scraping end of the scraper 10 is provided with a scraping portion. A second connecting strip 11 is fixed to the side of the scraper 10 facing away from the filter 51. A groove 12 is provided on the inner wall of the through-hole 52. The second connecting strip 11 is inserted into the groove 12. The telescopic member 7 is used to drive the scraper 10 to extend and retract so that the scraper 10 is close to or away from the filter 51. The connecting member 8 is connected to the bottom end of the filter 51, and the connecting member 8 is used to realize the detachable connection of the filter 51, and then to realize the portable disassembly and assembly of the filter 51.

[0045] Among them, in the specific implementation of the present utility model, refer to Figure 4 As shown, the connecting member 8 includes:

[0046] A support bar 81, the length and width of the support bar 81 are greater than the length and width of the filter screen 51, the support bar 81 is fixed to the bottom end of the filter screen 51, and both ends of the support bar 81 are hinged with a first connecting bar 82;

[0047] Two fixing bars 83, the two fixing bars 83 are symmetrically fixed on both sides of the outside of the filter frame 5;

[0048] The limiting pin 84 can pass through the end of the first connecting bar 82 and be embedded in the corresponding fixing bar 83.

[0049] Specifically, when installing the filter 51, insert the filter 51 from the bottom end, support the filter 51 from the bottom end with the support bar 81, align the end of the first connecting bar 82 with the fixing bar 83, and then install the upper limit pin 84 to limit the position.

[0050] When the filter 51 needs to be removed, the limit pin 84 is first released, and then the hinged first connecting bar 82 is rotated so that the first connecting bar 82 faces downward, and then the first connecting bar 82 is pulled downward, and the filter 51 can be pulled out of the through hole 52 using the support bar 81.

[0051] In the specific implementation of the present invention, see Figure 3 and Figure 4 As shown, the telescopic member 7 includes:

[0052] Two connecting rods 71 ​​, wherein the first ends of the two connecting rods 71 ​​are symmetrically connected to the end of the second connecting strip 11 facing away from the scraper strip 10 , and the second ends of the connecting rods 71 ​​extend to the outside of the filter frame 5 ;

[0053] The mounting bar 72 is fixed to the outer end of the connecting rod 71;

[0054] The electric telescopic rod 73 is installed through the mounting bar 72 , and the output end of the electric telescopic rod 73 is connected to the filter frame 5 .

[0055] Through the above technical solution:

[0056] When pulling down the first connecting bar 82 to remove the filter 51, the electric telescopic rod 73 can be used to extend and retract to make the scraper 10 fit the filter 51. During the process of pulling down the filter 51, the scraper 10 can be used to scrape off the solid impurities adhering to the filter 51. During the removal process, synchronous scraping can be performed, which can effectively reduce the workload of subsequent cleaning.

[0057] After the filter 51 is removed, the scraper 10 can be retracted by the extension of the electric telescopic rod 73, so that the second connecting strip 11 is completely embedded in the groove 12, which can maximize the opening of the perforation 52 and facilitate the cleaning of residual solid impurities inside the filter frame 5.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water heater utilizing waste heat from flue gas in offshore oil fields, comprising a heater body (1), wherein the two ends of the heater body (1) are symmetrically arranged as a flue gas inlet (3) and a flue gas outlet (4), and a spiral water pipe (6) is provided inside the heater body (1), characterized in that: Also included are: A filter frame (5) is installed at the front side of the smoke inlet end (3), and a vertical filter screen (51) is provided inside the filter frame (5), and a through hole (52) for the filter screen (51) to pass through is opened at the bottom end of the filter frame (5), a scraper (10) is provided inside the through hole (52), and a second connecting strip (11) is fixed to the side of the scraper (10) facing away from the filter screen (51); a telescopic member (7), the telescopic member (7) being used to drive the scraper (10) to extend and retract, so as to move the scraper (10) closer to or farther away from the filter screen (51); A connecting piece (8) is connected to the bottom end of the filter screen (51), and the connecting piece (8) is used to achieve a detachable connection of the filter screen (51).

2. The water heater utilizing waste heat from offshore oilfield flue gas according to claim 1, characterized in that: The inner side wall of the through hole (52) is provided with a groove (12), and the second connecting strip (11) is inserted and matched with the groove (12).

3. The water heater utilizing waste heat from offshore oilfield flue gas according to claim 2, characterized in that: The connecting member (8) comprises: A support bar (81), the support bar (81) is fixed to the bottom end of the filter screen (51), and both ends of the support bar (81) are hinged to a first connecting bar (82); Two fixing bars (83), the two fixing bars (83) being symmetrically fixed on two sides of the outside of the filter frame (5); A limiting pin (84) can pass through the end of the first connecting strip (82) and be embedded in the corresponding fixing strip (83).

4. The water heater utilizing waste heat from offshore oilfield flue gas according to claim 3, characterized in that: The telescopic member (7) comprises: Two connecting rods (71), wherein the first ends of the two connecting rods (71) are symmetrically connected to one end of the second connecting strip (11) facing away from the scraping strip (10), and the second ends of the connecting rods (71) extend to the outside of the filter frame (5); A mounting bar (72) fixed to the outer end of the connecting rod (71); An electric telescopic rod (73) is installed through the mounting bar (72), and an output end of the electric telescopic rod (73) is connected to the filter frame (5).

5. The water heater utilizing waste heat from offshore oilfield flue gas according to claim 1, characterized in that: A heat pipe bundle (13) is also provided inside the heater body (1).

6. The water heater utilizing waste heat from offshore oilfield flue gas according to claim 1, characterized in that: It also includes a mounting frame (2), which is used to mount the heater body (1), and a mounting hole is provided at the bottom end of the mounting frame (2).

7. The water heater utilizing waste heat from offshore oilfield flue gas according to claim 1, characterized in that: An inspection hole is provided on the outer wall of the heater body (1), and a sealing cover (9) is installed at the inspection hole.

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