CN210014581U

CN210014581U - Oil field reinjection water waste heat utilization system with prevent stifled online belt cleaning device

Info

Publication number: CN210014581U
Application number: CN201822178709.7U
Authority: CN
Inventors: 杨胜东
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-02-04
Anticipated expiration: 2028-12-25

Abstract

The utility model relates to an oil field reinjection water waste heat utilization system with prevent stifled online cleaning device, the device and system thereof are the used heat that draws the oil field reinjection water, an economizer system for heating oil field watering, by gear motor (1), raw water inlet (2), raw water inlet branch pipe A (3), raw water inlet branch pipe B (4), casing (5), rear bearing frame (6), drainage delivery port (7), drainage delivery pipe A (8), drainage delivery pipe B (9), support (10), front bearing frame (11), raw water delivery port (12), raw water outlet branch pipe A (13), raw water outlet branch pipe B (14), drainage water inlet (15), drainage delivery pipe A (16), drainage delivery pipe B (17), lead to axle (18), constitute such as filter screen A (19).

Description

Oil field reinjection water waste heat utilization system with prevent stifled online belt cleaning device

Technical Field

The utility model relates to an oil field reinjection water waste heat utilization system with prevent stifled online cleaning device, the device and system draw the used heat in the oil field reinjection water for an economizer system of heating oil field watering.

Background

Energy is an important material basis for the survival and development of human society, and the search and utilization of new renewable energy is an effective way for solving the energy shortage. In the oil field, water with certain temperature is reinjected to the underground in the oil extraction process, and natural gas or crude oil is used for heating and water blending during production, so that a large amount of natural gas and crude oil are consumed. The method for heating the water injection by extracting the heat in the reinjection water of the oil field has important energy-saving and environment-friendly values for production energy conservation, and has important significance for relieving energy consumption tension and reducing environmental pollution.

As shown in fig. 1, the basic process of oil field production at present is that crude oil produced by an oil well enters a two-in-one separator to separate natural gas and oil-water mixture. The natural gas is transported to a natural gas company in excess except for self-use; the oil-water mixture enters a settling tank to separate oil and water, the oil enters an oil tank and is conveyed to a combined station, the water enters a buffer tank, one part of the water enters a clear water tank after being treated by water injection, the water is injected underground, the other part of the water is used as mixed water, and the mixed water is heated by a gas boiler and is conveyed to an oil well. In the existing oil extraction process flow, water mixing heating is completely carried out by a gas boiler, combustion of gas is completely relied on, water injection has a certain temperature which is generally above 30 ℃, if low-level heat energy in the water injection is recovered by technical means, under the same working condition, the consumption of natural gas can be reduced, the production cost is reduced, and the benefit is increased.

FIG. 2 shows a process flow diagram of the oil field reinjection water waste heat utilization system, which is used for extracting waste heat contained in injected water, heating mixed water, supplementing heat through a gas boiler, and conveying the mixed water serving as production mixed water to an oil well.

However, the water quality of the mixed water and the injected water is poor, and the mixed water and the injected water contain a certain amount of impurities and oil stains, and the mixed water and the injected water cannot be normally used if a common heat pump system is used. The impurities can block the pipe orifice of the heat exchange pipe in the heat exchanger after long-time running, so that the system is paralyzed and the normal production is influenced; in the heat exchange process, oil stains can be accumulated on the wall surface of the heat exchange tube in the heat exchanger, so that the heat exchange effect of the heat exchanger is reduced, and the normal use is influenced.

Disclosure of Invention

For solving the waste heat recovery of reinjection water in the oil field production technology, mix water and water injection and contain a certain amount of impurity and greasy dirt, block up the heat exchange efficiency of the heat exchange tube mouth of pipe and reduction heat exchange tube, the utility model provides an oil field reinjection water waste heat utilization system with prevent stifled online belt cleaning device.

The application principle is as follows:

1. as shown in fig. 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, and 24, the anti-clogging online cleaning device of the present invention comprises a reduction motor, a raw water inlet branch pipe a, a raw water inlet branch pipe B, a housing, a rear bearing seat, a filtered water outlet branch pipe a, a filtered water outlet branch pipe B, a support, a front bearing seat, a raw water outlet branch pipe a, a raw water outlet branch pipe B, a filtered water inlet branch pipe a, a filtered water inlet branch pipe B, a through shaft, a filter screen a, a filter screen B, a separator a, a separator B, a separator C, a water inlet chamber a, a filter chamber a, a back flushing chamber a, a water outlet chamber a, a back flushing chamber a, a filter chamber B, a, The device comprises a water inlet cavity B, a filter backflushing cavity B, a water outlet cavity B, a heat exchanger, a heat exchange pipe, a water inlet and a water outlet, wherein one end of a raw water inlet branch pipe A and one end of a raw water inlet branch pipe B are respectively communicated with the water inlet cavity A and the water inlet cavity B, and the other ends of the raw water inlet branch pipe A and the raw water inlet branch pipe B are gathered at the; one end of the filtered water outlet branch pipe A and one end of the filtered water outlet branch pipe B are respectively communicated with the filter cavity A and the filter cavity B, and the other ends are gathered at the filtered water outlet; one end of the raw water outlet branch pipe A and one end of the raw water outlet branch pipe B are respectively communicated with the water outlet cavity A and the water outlet cavity B, and the other ends are gathered at the raw water outlet; one end of the filtered water inlet branch pipe A and one end of the filtered water inlet branch pipe B are respectively communicated with the filtering backflushing cavity A and the filtering backflushing cavity B, and the other ends are gathered at the filtered water inlet; the rear bearing seat and the front bearing seat are respectively positioned on two sides of the shell, the speed reducing motor is connected with the front bearing seat, the speed reducing motor drives the through shaft to rotate, the through shaft drives the partition plate A, the partition plate B, the partition plate C, the partition plate A, the partition plate B, the filter screen A and the filter screen B to rotate together, the partition plate A and the partition plate B are arranged in a cross mode, and the included angle between the partition plate A and the partition plate B is 90 degrees.

2. As shown in fig. 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23 and 24, the space enclosed by the partition board a, the filter screen a, the partition board a and the shell is a water inlet chamber a when communicating with the raw water inlet pipe a and a water outlet chamber a when communicating with the raw water outlet branch pipe a; a space surrounded by the filter screen A, the partition board B, the partition board A and the shell is a filter chamber A when communicated with the filtered water outlet branch pipe A, and is a filter backflushing chamber A when communicated with the filtered water inlet branch pipe A; a space enclosed by the partition board B, the filter screen B, the partition board B and the shell is a water inlet cavity B when communicated with a raw water inlet pipe B, and is a water outlet cavity B when communicated with a raw water outlet branch pipe B; the space enclosed by the filter screen B, the clapboard C, the clapboard B and the shell is a filter cavity B when being communicated with the filtered water outlet branch pipe B, and a filter back-flushing cavity B when being communicated with the filtered water inlet branch pipe B.

3. As shown in fig. 9, 10, 11, 12, 13, 14 and 22, the anti-blocking online cleaning device comprises the following filtering processes: raw water enters the shell from a raw water inlet, a partition plate A is vertically arranged, a partition plate B is horizontally arranged, the partition plate B blocks a raw water inlet branch pipe B, a raw water outlet branch pipe B, a filtered water outlet branch pipe B and a filtered water inlet branch pipe B, the raw water enters the water inlet cavity A from the raw water inlet branch pipe A, is filtered by the filter screen A, enters the filter cavity A, flows out from the filtered water outlet branch pipe A and a filtered water outlet, and is utilized; after the filter screen A is utilized, the filter screen A enters a filtering backflushing cavity A through a filtered water inlet and a filtered water inlet branch pipe A, the filter screen A is washed, and impurities in a water returning cavity A are carried and flow out through a raw water outlet branch pipe A and a raw water outlet; the rotation time is set to be 5-30 minutes, when the set time is reached, the speed reduction motor drives the partition plate A and the partition plate B to rotate, the rotation angles of the partition plate A and the partition plate B are less than 90 degrees, the partition plate A and the partition plate B are obliquely arranged and do not shield any water inlet and outlet to form a transition section, raw water enters the water inlet cavity A and the water inlet cavity B from the raw water inlet through the raw water inlet branch pipe A and the raw water inlet branch pipe B respectively, is filtered by the filter screen A and the filter screen B, then enters the filter cavity A and the filter cavity B respectively, passes through the filtered water outlet branch pipe A and the filtered water outlet branch pipe B, is collected at the filtered water outlet and flows; after the water is utilized, the water enters a filtering backflushing cavity A and a filtering backflushing cavity B through a filtered water inlet, a filtered water inlet branch pipe A and a filtered water inlet branch pipe B, the filtering net A and the filtering net B are washed, and impurities in the water returning cavity A and the water returning cavity B are carried and collected at a raw water outlet through a raw water outlet branch pipe A and a raw water outlet branch pipe B to flow out; after the partition plate A and the partition plate B rotate by 90 degrees, the rotation is stopped, the partition plate A is horizontally arranged, the partition plate B is vertically arranged, the partition plate A seals and plugs the raw water inlet branch pipe A, the raw water outlet branch pipe A, the filtered water outlet branch pipe A and the filtered water inlet branch pipe A, raw water enters the water inlet cavity B from the raw water inlet branch pipe B, is filtered by the filter screen B, enters the filter cavity B, flows out through the filtered water outlet branch pipe B and the filtered water outlet, and is added and utilized; after the filter screen B is used, the filter screen B enters a filtering backflushing cavity B through a filtered water inlet and a filtered water inlet branch pipe B, the filter screen B is washed, and impurities carried in a water returning cavity B flow out through a raw water outlet branch pipe B and a raw water outlet; the rotation time is set to be 5-30 minutes, when the set time is reached, the rotation angles of the partition plate A and the partition plate B are less than 90 degrees, the partition plate A and the partition plate B are obliquely arranged and do not shield any water inlet and outlet to form a transition section, raw water enters the water inlet cavity A and the water inlet cavity B from the raw water inlet through the raw water inlet branch pipe A and the raw water inlet branch pipe B respectively, is filtered by the filter screen A and the filter screen B, then enters the filter cavity A and the filter cavity B respectively, passes through the filtered water outlet branch pipe A and the filtered water outlet branch pipe B, and is collected at the filtered water outlet to flow out for utilization; after the water is utilized, the water enters a filtering backflushing cavity A and a filtering backflushing cavity B through a filtered water inlet, a filtered water inlet branch pipe A and a filtered water inlet branch pipe B, the filtering net A and the filtering net B are washed, and impurities in the water returning cavity A and the water returning cavity B are carried and collected at a raw water outlet through a raw water outlet branch pipe A and a raw water outlet branch pipe B to flow out; the water inlet branch pipe B, the raw water outlet branch pipe B, the filtered water outlet branch pipe B and the filtered water inlet branch pipe B are plugged by the partition plate B, the raw water enters the water inlet cavity A from the raw water inlet branch pipe A, is filtered by the filter screen A, enters the filter cavity A, flows out through the filtered water outlet branch pipe A and the filtered water outlet, and is utilized; after the filter screen A is utilized, the filter screen A enters the filtering backflushing cavity A through the filtered water inlet and the filtered water inlet branch pipe A, the filter screen A is washed, and impurities in the water returning cavity A are carried and flow out through the raw water outlet branch pipe A and the raw water outlet.

4. As shown in fig. 9, 10, 11, 12, 13, 14 and 22, when the device is rotated for a set time, the partition plate a and the partition plate B rotate for 90 degrees each time, and then the partition plate a, the filter screen a, the partition plate B and the filter screen B rotate twice, so that the dirt and impurities accumulated in the water inlet cavity a and the water inlet cavity B enter the water outlet cavity a and the water outlet cavity B and are washed out of the shell.

5. As shown in fig. 25 and 26, in the oil field reinjection water waste heat utilization system with the anti-blocking online cleaning device, a water inlet of a heat exchanger is connected with a filtered water outlet, a water outlet of the heat exchanger is connected with a filtered water inlet, rubber balls are placed in a filter cavity a and a filter cavity B, the rubber balls are isolated among the filter cavity a, a filtering backflushing cavity a and the heat exchanger by the filter screen a to circulate, the rubber balls enter the heat exchanger through a filtered water outlet branch pipe a, collide and contact with the inner surface of the heat exchange pipe to remove dirt on the inner surface of the heat exchange pipe, then return to the filtering backflushing cavity a from the water outlet, rotate through the filter screen a and a partition plate a, return to the filter cavity a from the; the rubber ball is isolated among the filter cavity B, the filtering backflushing cavity B and the heat exchanger by the filter screen B to circulate, enters the heat exchanger from the filtered water outlet branch pipe B, collides and contacts with the inner surface of the heat exchange pipe to remove dirt on the inner surface of the heat exchange pipe, returns to the filtering backflushing cavity B from the water outlet, rotates through the filter screen B and the partition board B, and returns to the filter cavity B from the filtering backflushing cavity B to circulate in a reciprocating mode.

6. As shown in FIG. 27, the oil field reinjection water waste heat utilization system with the anti-blocking online cleaning device comprises a buffer tank, a natural gas boiler, a clean water tank, an anti-blocking online cleaning device, a water mixing pump, a water injection pump, a natural gas inlet, a high-pressure generator, a low-temperature generator, a condenser, an absorber A, an absorber B, an evaporator A, an evaporator B, a heat exchanger A, a heat exchanger B, a solution pump A, a solution pump B, a solution pump C, a refrigerant pump, a solution pump D and a mixing tank, wherein the water mixing pump extracts water for production, the water mixing pump extracts water for filling, the water mixing in the buffer tank enters the anti-blocking online cleaning device through the water mixing pump, the filtered water enters heat exchange pipes of the absorber A and the absorber B and is heated by absorption heat released by absorbing water vapor with lithium bromide solution in the absorber A and the absorber B, the mixed water is heated by the absorber A, the absorber B and the condenser in two stages, enters the anti-blocking online cleaning device to wash impurities left in the anti-blocking online cleaning device, enters the natural gas boiler together with the impurities, and is heated again by the natural gas boiler; the water injection in the buffer tank enters the anti-blocking online cleaning device through the water injection pump, enters the evaporator A and the evaporator B to release heat after being filtered, enters the anti-blocking online cleaning device to flush impurities left in the anti-blocking online cleaning device after releasing heat, and enters the clean water tank together with the impurities; natural gas enters a high-pressure generator at a natural gas inlet to be combusted, the lithium bromide solution with the middle concentration in the high-pressure generator is heated, the lithium bromide solution with the middle concentration is changed into a lithium bromide concentrated solution, the lithium bromide concentrated solution enters a change exchanger A to exchange heat with the lithium bromide solution with the middle concentration, the lithium bromide concentrated solution is mixed with the lithium bromide solution with the middle concentration in a mixing box after heat exchange, the lithium bromide concentrated solution is conveyed to a heat exchanger B by a solution pump B to exchange heat with a dilute solution, the lithium bromide concentrated solution after heat exchange enters an absorber A to absorb water vapor flowing in through evaporation of the evaporator A, generated absorption heat is released into mixed water conveyed by a mixed water pump, the lithium bromide concentrated solution is diluted into the lithium bromide solution with the middle concentration, the lithium bromide solution is conveyed to the absorber B by a solution pump C to absorb the water vapor flowing in through evaporation of the evaporator B, the generated absorption heat is released into the mixed water conveyed by the mixed water, the solution is conveyed to a heat exchanger B by a solution pump D for heat exchange, then enters a low-temperature generator, is heated and concentrated by water vapor from a high-pressure generator, and is changed into a lithium bromide solution with intermediate concentration, then enters a mixing box to be divided into two parts, one part of the solution is mixed with a concentrated solution from the high-pressure generator and is recycled, and the other part of the solution is conveyed to the heat exchanger A by the solution pump A to exchange heat with the concentrated solution of lithium bromide evaporated from the high-pressure generator and then enters the high-pressure generator for recycling; the water vapor from the high-pressure generator enters the low-temperature generator, the lithium bromide dilute solution of the low-temperature generator is heated, the water in the lithium bromide dilute solution is partially evaporated to form a lithium bromide solution with intermediate concentration, the evaporated water vapor enters the condenser and exchanges heat with the water mixed in the condenser, the water vapor is cooled to become liquid water and enters the evaporator A and the bottom of the evaporator B, the liquid water at the bottoms of the evaporator A and the evaporator B is sprayed onto the heat exchange tubes of the evaporator A and the evaporator B through a refrigerant pump, the heat injected into the heat exchange tubes is absorbed and then evaporated, the liquid water enters the absorber A and the absorber B and is absorbed by concentrated solution, and the heat exchange is circulated.

7. As shown in fig. 2 and 27, the oil field reinjection water waste heat utilization system with the anti-blocking online cleaning device has the advantages that the water injection temperature T1 is 36 ℃, the water injection temperature T3 is 10 ℃, and 26 ℃ can be extracted from water injection; the temperature of the mixed water T1 is 36 ℃, the temperature of the mixed water T4 is 46 ℃, the heating and lifting temperature is 10 ℃, the mixed water enters a gas boiler to be heated to T2, the temperature is 75 ℃, the mixed water is conveyed to an oil well, wherein the temperature of T1 can float to a certain extent, the interval is 20-40 ℃, and T2 and T4 can be adjusted according to production requirements.

Drawings

FIG. 1-original Process flow diagram

FIG. 2 is the process flow chart of the oil field reinjection water waste heat utilization of the invention

FIG. 3 is the front view of the anti-blocking on-line cleaning device of the present invention

FIG. 4-rear view of the anti-blocking on-line cleaning device of the present invention

FIG. 5-Top view of the anti-blocking on-line cleaning device of the present invention

Figure 6-bottom view of the anti-blocking on-line cleaning device of the utility model

FIG. 7-left view of the utility model of anti-blocking on-line cleaning device

Figure 8-the utility model discloses prevent stifled online cleaning device right side view

FIG. 9 is a sectional view of the anti-blocking online cleaning device of the present invention

FIG. 10 is a sectional view of the anti-blocking on-line cleaning device B-B of the present invention

FIG. 11-C sectional view of the anti-blocking on-line cleaning device of the present invention

FIG. 12 is a D-D sectional view of the anti-blocking on-line cleaning device of the present invention

FIG. 13 is a cross-sectional view of E-E of the anti-blocking on-line cleaning device of the present invention

FIG. 14 is a sectional view showing the F-F of the anti-blocking on-line cleaning device of the present invention

Figure 15-explosion diagram of the anti-blocking on-line cleaning device of the utility model

Figure 16-explosion diagram of the anti-blocking on-line cleaning device of the utility model

Figure 17-front view of the anti-blocking on-line cleaning device of the utility model

Figure 18-the utility model discloses prevent stifled on-line cleaning device G-G section view

FIG. 19 is a H-H sectional view of the anti-blocking on-line cleaning device of the present invention

FIG. 20 is a cross-sectional view of an I-I section of the anti-blocking on-line cleaning device of the present invention

FIG. 21 is a J-J sectional view of the anti-blocking on-line cleaning device of the present invention

Figure 22-K section view of the anti-blocking on-line cleaning device of the present invention

FIG. 23 is a combined view of filtering elements of the anti-blocking on-line cleaning device of the present invention

FIG. 24 is an exploded view of the filter element of the anti-clogging online cleaning device of the present invention

FIG. 25-scale removal schematic of the system

FIG. 26-Scale removal schematic of System II

FIG. 27-oil field reinjection water waste heat utilization system

Description of the figures

Fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14, fig. 15, fig. 16, fig. 17, fig. 18, fig. 19, fig. 20, fig. 21, fig. 22, fig. 23, fig. 24, fig. 25, fig. 26, 1-a reduction motor; 2-raw water inlet; 3-raw water inlet branch pipe A; 4-raw water inlet branch pipe B; 5-a shell; 6-rear bearing seat; 7-filtered water outlet; 8-filtering the water outlet branch pipe A; 9-filtering the water outlet branch pipe B; 10-a support; 11-a front bearing block; 12-raw water outlet; 13-raw water outlet branch pipe A; 14-raw water outlet branch pipe B; 15-water inlet of filtered water; 16-filtered water inlet branch pipe A; 17-filtering the water inlet branch pipe B; 18-through shaft; 19-Filter mesh A; 20-partition plate a; 21-filter screen B; 22-partition plate B; 23-separator A; 24-a separator B; 25-separator C; 26-water inlet cavity A; 27-filtration chamber a; 28-filtration backflushing chamber a; 29-water-withdrawal cavity A; 30-water inlet cavity B; 31-filtration chamber B; 32-filtration backflushing chamber B; 33-a water-withdrawal cavity B; 34-a heat exchanger; 35-heat exchange tubes; 36-a water inlet; 37-water outlet.

Fig. 27, 38-buffer tank; 39-natural gas boiler; 40-a clean water tank; 41-anti-blocking online cleaning device; 42-water mixing pump; 43-water injection pump; 44-natural gas inlet; 45-high voltage generator; 46-a low temperature generator; 47-a condenser; 48-absorber A; 49-absorber B; 50-evaporator A; 51-evaporator B; 52-Heat exchanger A; 53-Heat exchanger B; 54-solution pump A; 55-solution pump B; 56-solution pump C; 57-refrigerant pump; 58-solution pump D; 59-mixing box.

Detailed Description

1. As shown in fig. 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, and 24, the utility model discloses a clogging-proof online cleaning device, which comprises a reduction motor (1), a raw water inlet (2), a raw water inlet branch pipe a (3), a raw water inlet branch pipe B (4), a housing (5), a rear bearing seat (6), a filtered water outlet (7), a filtered water outlet branch pipe a (8), a filtered water outlet branch pipe B (9), a support (10), a front bearing seat (11), a raw water outlet (12), a raw water outlet branch pipe a (13), a filtered water outlet branch pipe B (14), a filtered water inlet (15), a filtered water inlet branch pipe a (16), a filtered water inlet branch pipe B (17), a through shaft (18), a filter screen a (19), a filter screen (2), a raw water inlet branch pipe a raw water inlet (3), a raw water inlet branch pipe B (4, The device comprises a partition plate A (20), a filter screen B (21), a partition plate B (22), a partition plate A (23), a partition plate B (24), a partition plate C (25), a water inlet cavity A (26), a filter cavity A (27), a filtering backflushing cavity A (28), a water outlet cavity A (29), a water inlet cavity B (30), a filter cavity B (31), a filtering backflushing cavity B (32), a water outlet cavity B (33), a heat exchanger (34), a heat exchange pipe (35), a water inlet (36) and a water outlet (37), wherein one ends of a raw water inlet branch pipe A (3) and a raw water inlet branch pipe B (4) are respectively communicated with the water inlet cavity A (26) and the water inlet cavity B (30), and one ends of the raw water inlet branch pipe A and; one ends of the filtered water outlet branch pipe A (8) and the filtered water outlet branch pipe B (9) are respectively communicated with the filter cavity A (27) and the filter cavity B (31), and the other ends are gathered at the filtered water outlet (7); one end of the raw water outlet branch pipe A (13) and one end of the raw water outlet branch pipe B (14) are respectively communicated with the water outlet cavity A (29) and the water outlet cavity B (30), and the other ends are gathered at the raw water outlet (12); one end of the filtered water inlet branch pipe A (16) and one end of the filtered water inlet branch pipe B (17) are respectively communicated with the filtering backflushing cavity A (28) and the filtering backflushing cavity B (32), and the other ends are gathered at the filtered water inlet (15); rear bearing seat (6) and front bearing seat (11) are located the both sides of casing (5) respectively, gear motor (1) is connected with front bearing seat (11), gear motor (1) drives logical axle (18) and rotates, leads to axle (18) and drives baffle A (23), baffle B (24), baffle C (25), division board A (20), division board B (22), filter screen A (19), filter screen B (21) are together rotatory, division board A (20) and division board B (22) cross arrangement, both contained angles 90 degrees.

2. As shown in fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 13, fig. 15, fig. 16, fig. 17, fig. 18, fig. 19, fig. 20, fig. 21, fig. 22, fig. 23, and fig. 24, the anti-blocking on-line cleaning device of the present invention comprises a space enclosed by a partition plate a (23), a filter screen a (19), a partition plate a (20), and a housing (5), wherein the space is a water inlet chamber a (26) when communicating with a raw water inlet pipe a (3), and a water outlet chamber a (29) when communicating with a raw water outlet branch pipe a (13); a space enclosed by the filter screen A (19), the clapboard B (24), the clapboard A (20) and the shell (5) is a filter chamber A (27) when being communicated with the filtered water outlet branch pipe A (8), and is a filter backflushing chamber A (28) when being communicated with the filtered water inlet branch pipe A (16); a space enclosed by the partition board B (24), the filter screen B (21), the partition board B (22) and the shell (5) is a water inlet cavity B (30) when communicated with the raw water inlet pipe B (4), and is a water outlet cavity B (33) when communicated with the raw water outlet branch pipe B (14); the space enclosed by the filter screen B (21), the clapboard C (25), the clapboard B (22) and the shell (5) is a filter cavity B (31) when being communicated with the filtered water outlet branch pipe B (9), and a filter back-flushing cavity B (32) when being communicated with the filtered water inlet branch pipe B (17).

3. As shown in fig. 9, 10, 11, 12, 13, 14 and 22, the anti-blocking online cleaning device comprises the following filtering processes: raw water enters the shell (5) from the raw water inlet (2), the partition plate A (20) is vertically arranged, the partition plate B (22) is horizontally arranged, the partition plate B (22) seals the raw water inlet branch pipe B (4), the raw water outlet branch pipe B (14), the filtered water outlet branch pipe B (9) and the filtered water inlet branch pipe B (17), the raw water enters the water inlet cavity A (26) from the raw water inlet branch pipe A (3), is filtered by the filter screen A (19), enters the filter cavity A (27), and flows out through the filtered water outlet branch pipe A (8) and the filtered water outlet (7) for utilization; after the filter screen A (19) is used, the filter screen A (19) enters a filtering backflushing cavity A (28) through a filtered water inlet (15) and a filtered water inlet branch pipe A (16), and impurities in a water returning cavity A (29) are carried and flow out through a raw water outlet branch pipe A (13) and a raw water outlet (12); the rotation time is set to be 5-30 minutes, when the set time is reached, the speed reduction motor (1) drives the partition plate A (20) and the partition plate B (22) to rotate, the rotation angles of the partition plate A (20) and the partition plate B (22) are less than 90 degrees, the partition plate A (20) and the partition plate B (22) are inclined, and do not shield any water inlet and outlet to form a transition section, raw water enters the water inlet cavity A (26) and the water inlet cavity B (30) from the raw water inlet (2) through the raw water inlet branch pipe A (3) and the raw water inlet branch pipe B (4), and enters the filter cavity A (27) and the filter cavity B (31) after being filtered by the filter screen A (19) and the filter screen B (21), and then enters the filter cavity A (27) and the filter cavity B (31) respectively, passes through the filtered water outlet branch pipe A (8; after the water flows into a filtering backflushing cavity A (28) and a filtering backflushing cavity B (32) through a filtered water inlet (15), a filtered water inlet branch pipe A (16) and a filtered water inlet branch pipe B (17), the filtering net A (19) and the filtering net B (21) are washed, and impurities in a water outlet cavity A (29) and a water outlet cavity B (33) are carried and collected in a raw water outlet (12) through a raw water outlet branch pipe A (13) and a raw water outlet branch pipe B (14) to flow out; the water purifier is characterized in that the separation plate A (20) and the separation plate B (22) stop rotating after rotating for 90 degrees, the separation plate A (20) is horizontally arranged, the separation plate B (22) is vertically arranged, the separation plate A (20) blocks a raw water inlet branch pipe A (3), a raw water outlet branch pipe A (13), a filtered water outlet branch pipe A (8) and a filtered water inlet branch pipe A (16), raw water enters a water inlet cavity B (30) from a raw water inlet branch pipe B (4), is filtered by a filter screen B (21), enters a filter cavity B (31), flows out from a filtered water outlet branch pipe B (9) and a filtered water outlet (7), and is used for hair dressing; after the filter screen B (21) is used, the filter screen B enters a filtering backflushing cavity B (32) through a filtered water inlet (15) and a filtered water inlet branch pipe B (17), impurities in a water returning cavity B (33) are carried and flow out through a raw water outlet branch pipe B (14) and a raw water outlet (12); the rotation time is set to be 5-30 minutes, when the set time is reached, the rotation angles of the partition plate A (20) and the partition plate B (22) are less than 90 degrees, the partition plate A (20) and the partition plate B (22) are obliquely arranged and do not shield any water inlet and outlet to form a transition section, raw water enters the water inlet cavity A (26) and the water inlet cavity B (30) from the raw water inlet (2) through the raw water inlet branch pipe A (3) and the raw water inlet branch pipe B (4), is filtered through the filter screen A (19) and the filter screen B (21), then enters the filter cavity A (27) and the filter cavity B (31) respectively, passes through the filtered water outlet branch pipe A (8) and the filtered water outlet branch pipe B (9), and is collected to the filtered water outlet (7) to flow out for; after the water flows into a filtering backflushing cavity A (28) and a filtering backflushing cavity B (32) through a filtered water inlet (15), a filtered water inlet branch pipe A (16) and a filtered water inlet branch pipe B (17), the filtering net A (19) and the filtering net B (21) are washed, and impurities in a water outlet cavity A (29) and a water outlet cavity B (33) are carried and collected in a raw water outlet (12) through a raw water outlet branch pipe A (13) and a raw water outlet branch pipe B (14) to flow out; the water purifier is characterized in that the separation plate A (20) and the separation plate B (22) stop rotating after rotating for 90 degrees, the separation plate A (20) is vertically arranged, the separation plate B (22) is horizontally arranged, the separation plate B (22) seals a raw water inlet branch pipe B (4), a raw water outlet branch pipe B (14), a filtered water outlet branch pipe B (9) and a filtered water inlet branch pipe B (17), raw water enters a water inlet cavity A (26) from a raw water inlet branch pipe A (3), is filtered by a filter screen A (19), enters a filter cavity A (27), and flows out through a filtered water outlet branch pipe A (8) and a filtered water outlet (7) for utilization; after the filter screen A (19) is used, the filter screen A enters a filtering backflushing cavity A (28) through a filtered water inlet (15) and a filtered water inlet branch pipe A (16), and impurities in a water returning cavity A (29) are carried and flow out through a raw water outlet branch pipe A (13) and a raw water outlet (12).

4. As shown in fig. 9, 10, 11, 12, 13, 14 and 22, when the device is rotated for a set time, the partition plate a (20) and the partition plate B (22) are rotated for 90 degrees each time, and then through twice rotations of the partition plate a (20), the filter screen a (19), the partition plate B (22) and the filter screen B (21), the dirt and debris accumulated in the water inlet cavity a (26) and the water inlet cavity B (30) enter the water outlet cavity a (29) and the water outlet cavity B (33) and are washed out of the housing (5).

5. As shown in fig. 25 and 26, the oil field reinjection water waste heat utilization system with the anti-blocking online cleaning device comprises a heat exchanger (34), a water inlet (36) of the heat exchanger (34) is connected with a filtered water outlet (7), a water outlet (37) of the heat exchanger (34) is connected with a filtered water inlet (15), rubber balls are placed in a filter cavity A (27) and a filter cavity B (31), the rubber balls are isolated by a filter screen A (19) and circulate among the filter cavity A (27), a filtering backflushing cavity A (28) and the heat exchanger (34), the rubber balls enter the heat exchanger (34) from a filtered water outlet branch pipe A (8) and collide and contact with the inner surface of a heat exchange pipe (35) to remove dirt on the inner surface of the heat exchange pipe (35), then return to the filtering backflushing cavity A (28) from the water outlet (37), and rotate through the filter screen A (19) and a partition plate A (20), and return to the filter cavity A, performing reciprocating circulation; the rubber balls are isolated among the filter cavity B (31), the filtering backflushing cavity B (32) and the heat exchanger (34) by the filter screen B (21) to circulate, enter the heat exchanger (34) through the filtered water outlet branch pipe B (9), collide with the inner surface of the heat exchange pipe (35), remove dirt on the inner surface of the heat exchange pipe (35), return to the filtering backflushing cavity B (32) through the water outlet (37), rotate through the filter screen B (21) and the partition plate B (22), and return to the filter cavity B (31) through the filtering backflushing cavity B (32) to circulate in a reciprocating mode.

6. As shown in figure 27, the oil field reinjection water waste heat utilization system with the anti-blocking online cleaning device comprises a buffer tank (38), a natural gas boiler (39), a clean water tank (40), an anti-blocking online cleaning device (41), a water mixing pump (42), a water injection pump (43), a natural gas inlet (44), a high-pressure generator (45), a low-temperature generator (46), a condenser (47), an absorber A (48), an absorber B (49), an evaporator A (50), an evaporator B (51), a heat exchanger A (52), a heat exchanger B (53), a solution pump A (54), a solution pump B (55), a solution pump C (56), a refrigerant pump (57), a solution pump D (58) and a mixing box (59), wherein the buffer tank (38) is extracted by the water mixing pump (42) and used for producing blending water, and the buffer tank (38) is extracted by the water injection pump (43), the filling water is used for filling, the water in the buffer tank (38) enters the anti-blocking online cleaning device (41) through the water mixing pump (42), is filtered, enters the heat exchange pipes of the absorber A (48) and the absorber B (49), is heated by the absorption heat released by the lithium bromide solution in the absorber A (48) and the absorber B (49) after being absorbed by the water vapor, then enters the condenser (47) through the absorber A (48) and the absorber B (49), is heated by the water vapor in the condenser (47), and after being heated by the absorber A (48), the absorber B (49) and the condenser (47) in two stages, enters the anti-blocking online cleaning device (41) to flush the impurities left in the anti-blocking online cleaning device (41), enters the natural gas boiler (39) together with the impurities, and is heated again by the natural gas boiler (39); water injected into the buffer tank (38) enters the anti-blocking online cleaning device (41) through the water injection pump (43), enters the evaporator A (50) and the evaporator B (51) after being filtered to release heat, enters the anti-blocking online cleaning device (41) after releasing the heat to flush impurities left in the anti-blocking online cleaning device (41), and enters the clean water tank (40) together with the impurities; natural gas enters a high-pressure generator (45) at a natural gas inlet (44) to be combusted, a lithium bromide solution with middle concentration in the high-pressure generator (45) is heated, the lithium bromide solution with middle concentration is changed into a lithium bromide concentrated solution, the lithium bromide concentrated solution enters a change exchanger A (52) to exchange heat with the lithium bromide solution with middle concentration, the lithium bromide solution with middle concentration is mixed with the lithium bromide solution with middle concentration from a mixing box (59) after heat exchange, then the lithium bromide concentrated solution is conveyed to a heat exchanger B (53) by a solution pump B (55) to exchange heat with a dilute solution, the lithium bromide concentrated solution after heat exchange enters an absorber A (48) to absorb water vapor evaporated and flowed in by an evaporator A (50), generated absorption heat is released into mixed water conveyed by a mixed water pump (42), the lithium bromide concentrated solution is diluted into the lithium bromide solution with middle concentration, and then conveyed to the absorber B (49) by a solution pump C (56) to absorb the water vapor evaporated and flowed in by an evaporator, the generated absorbed heat is released into the mixed water conveyed by a mixed water pump (42), the lithium bromide solution with the intermediate concentration is changed into a dilute solution, the dilute solution is conveyed to a heat exchanger B (53) by a solution pump D (58) for heat exchange, then enters a low-temperature generator (46), is heated and concentrated by water vapor from a high-pressure generator (45), and after the lithium bromide solution with the intermediate concentration is changed into the lithium bromide solution with the intermediate concentration, the lithium bromide solution enters a mixing box (59) to be divided into two parts, one part of the lithium bromide solution is mixed with the concentrated solution from the high-pressure generator (45) and is circulated again, and the other part of the lithium bromide solution is conveyed to a heat exchanger A (52) by a solution pump A (54) for heat exchange with the concentrated solution of the lithium bromide evaporated from the high-pressure; the water vapor from the high-pressure generator (45) enters the low-temperature generator (46), the lithium bromide dilute solution of the low-temperature generator (46) is heated, water in the lithium bromide dilute solution is partially evaporated to form a lithium bromide solution with intermediate concentration, the evaporated water vapor enters the condenser (47) and exchanges heat with water mixed in the condenser (47), the water vapor is cooled to be liquid water, the liquid water enters the bottoms of the evaporator A (50) and the evaporator B (51), the liquid water at the bottoms of the evaporator A (50) and the evaporator B (51) is sprayed onto heat exchange tubes of the evaporator A (50) and the evaporator B (51) through a refrigerant pump (57), the heat injected into the heat exchange tubes is absorbed and evaporated, the heat enters the absorber A (48) and the absorber B (49) and is absorbed by the concentrated solution, and heat exchange is circulated.

Claims

1. The utility model provides a prevent stifled online cleaning device has, its characterized in that by gear motor (1), former water inlet (2), former water inlet branch pipe A (3), former water inlet branch pipe B (4), casing (5), rear bearing frame (6), drainage delivery port (7), drainage delivery branch pipe A (8), drainage delivery branch pipe B (9), support (10), front bearing frame (11), former water delivery port (12), former water outlet branch pipe A (13), former water delivery branch pipe B (14), drainage water inlet (15), drainage delivery branch pipe A (16), drainage delivery branch pipe B (17), lead to axle (18), filter screen A (19), division board A (20), filter screen B (21), division board B (22), division board A (23), division board B (24), baffle C (25), intake antrum A (26), filter antrum A (27), The device comprises a filtering backflushing cavity A (28), a water outlet cavity A (29), a water inlet cavity B (30), a filtering cavity B (31), a filtering backflushing cavity B (32), a water outlet cavity B (33), a heat exchanger (34), a heat exchange pipe (35), a water inlet (36) and a water outlet (37), wherein one ends of a raw water inlet branch pipe A (3) and a raw water inlet branch pipe B (4) are respectively communicated with a water inlet cavity A (26) and the water inlet cavity B (30), and one ends of the raw water inlet branch pipe A and the raw water inlet branch pipe B are gathered at a raw water inlet (; one ends of the filtered water outlet branch pipe A (8) and the filtered water outlet branch pipe B (9) are respectively communicated with the filter cavity A (27) and the filter cavity B (31), and the other ends are gathered at the filtered water outlet (7); one end of the raw water outlet branch pipe A (13) and one end of the raw water outlet branch pipe B (14) are respectively communicated with the water outlet cavity A (29) and the water outlet cavity B (33), and the other ends are gathered at the raw water outlet (12); one end of the filtered water inlet branch pipe A (16) and one end of the filtered water inlet branch pipe B (17) are respectively communicated with the filtering backflushing cavity A (28) and the filtering backflushing cavity B (32), and the other ends are gathered at the filtered water inlet (15); rear bearing seat (6) and front bearing seat (11) are located the both sides of casing (5) respectively, gear motor (1) is connected with front bearing seat (11), gear motor (1) drives logical axle (18) and rotates, leads to axle (18) and drives baffle A (23), baffle B (24), baffle C (25), division board A (20), division board B (22), filter screen A (19), filter screen B (21) are together rotatory, division board A (20) and division board B (22) cross arrangement, both contained angles 90 degrees.

2. The anti-blocking online cleaning device according to claim 1, wherein a space enclosed by the partition plate a (23), the filter screen a (19), the partition plate a (20) and the housing (5) is a water inlet chamber a (26) when communicating with the raw water inlet branch pipe a (3), and a water outlet chamber a (29) when communicating with the raw water outlet branch pipe a (13); a space enclosed by the filter screen A (19), the clapboard B (24), the clapboard A (20) and the shell (5) is a filter chamber A (27) when being communicated with the filtered water outlet branch pipe A (8), and is a filter backflushing chamber A (28) when being communicated with the filtered water inlet branch pipe A (16); a space enclosed by the partition board B (24), the filter screen B (21), the partition board B (22) and the shell (5) is a water inlet cavity B (30) when communicated with the raw water inlet branch pipe B (4), and is a water outlet cavity B (33) when communicated with the raw water outlet branch pipe B (14); the space enclosed by the filter screen B (21), the clapboard C (25), the clapboard B (22) and the shell (5) is a filter cavity B (31) when being communicated with the filtered water outlet branch pipe B (9), and a filter back-flushing cavity B (32) when being communicated with the filtered water inlet branch pipe B (17).

3. The anti-blocking online cleaning device according to claim 1, characterized in that the filtering process is as follows: raw water enters the shell (5) from the raw water inlet (2), the partition plate A (20) is vertically arranged, the partition plate B (22) is horizontally arranged, the partition plate B (22) seals the raw water inlet branch pipe B (4), the raw water outlet branch pipe B (14), the filtered water outlet branch pipe B (9) and the filtered water inlet branch pipe B (17), the raw water enters the water inlet cavity A (26) from the raw water inlet branch pipe A (3), is filtered by the filter screen A (19), enters the filter cavity A (27), and flows out through the filtered water outlet branch pipe A (8) and the filtered water outlet (7) for utilization; after the filter screen A (19) is used, the filter screen A (19) enters a filtering backflushing cavity A (28) through a filtered water inlet (15) and a filtered water inlet branch pipe A (16), and impurities in a water returning cavity A (29) are carried and flow out through a raw water outlet branch pipe A (13) and a raw water outlet (12); the rotation time is set to be 5-30 minutes, when the set time is reached, the speed reduction motor (1) drives the partition plate A (20) and the partition plate B (22) to rotate, the rotation angles of the partition plate A (20) and the partition plate B (22) are less than 90 degrees, the partition plate A (20) and the partition plate B (22) are inclined, and do not shield any water inlet and outlet to form a transition section, raw water enters the water inlet cavity A (26) and the water inlet cavity B (30) from the raw water inlet (2) through the raw water inlet branch pipe A (3) and the raw water inlet branch pipe B (4), and enters the filter cavity A (27) and the filter cavity B (31) after being filtered by the filter screen A (19) and the filter screen B (21), and then enters the filter cavity A (27) and the filter cavity B (31) respectively, passes through the filtered water outlet branch pipe A (8; after the water flows into a filtering backflushing cavity A (28) and a filtering backflushing cavity B (32) through a filtered water inlet (15), a filtered water inlet branch pipe A (16) and a filtered water inlet branch pipe B (17), the filtering net A (19) and the filtering net B (21) are washed, and impurities in a water outlet cavity A (29) and a water outlet cavity B (33) are carried and collected in a raw water outlet (12) through a raw water outlet branch pipe A (13) and a raw water outlet branch pipe B (14) to flow out; the water purifier is characterized in that the separation plate A (20) and the separation plate B (22) stop rotating after rotating for 90 degrees, the separation plate A (20) is horizontally arranged, the separation plate B (22) is vertically arranged, the separation plate A (20) blocks a raw water inlet branch pipe A (3), a raw water outlet branch pipe A (13), a filtered water outlet branch pipe A (8) and a filtered water inlet branch pipe A (16), raw water enters a water inlet cavity B (30) from a raw water inlet branch pipe B (4), is filtered by a filter screen B (21), enters a filter cavity B (31), flows out from a filtered water outlet branch pipe B (9) and a filtered water outlet (7), and is used for hair dressing; after the filter screen B (21) is used, the filter screen B enters a filtering backflushing cavity B (32) through a filtered water inlet (15) and a filtered water inlet branch pipe B (17), impurities in a water returning cavity B (33) are carried and flow out through a raw water outlet branch pipe B (14) and a raw water outlet (12); the rotation time is set to be 5-30 minutes, when the set time is reached, the rotation angles of the partition plate A (20) and the partition plate B (22) are less than 90 degrees, the partition plate A (20) and the partition plate B (22) are obliquely arranged and do not shield any water inlet and outlet to form a transition section, raw water enters the water inlet cavity A (26) and the water inlet cavity B (30) from the raw water inlet (2) through the raw water inlet branch pipe A (3) and the raw water inlet branch pipe B (4), is filtered through the filter screen A (19) and the filter screen B (21), then enters the filter cavity A (27) and the filter cavity B (31) respectively, passes through the filtered water outlet branch pipe A (8) and the filtered water outlet branch pipe B (9), and is collected to the filtered water outlet (7) to flow out for; after the water flows into a filtering backflushing cavity A (28) and a filtering backflushing cavity B (32) through a filtered water inlet (15), a filtered water inlet branch pipe A (16) and a filtered water inlet branch pipe B (17), the filtering net A (19) and the filtering net B (21) are washed, and impurities in a water outlet cavity A (29) and a water outlet cavity B (33) are carried and collected in a raw water outlet (12) through a raw water outlet branch pipe A (13) and a raw water outlet branch pipe B (14) to flow out; the water purifier is characterized in that the separation plate A (20) and the separation plate B (22) stop rotating after rotating for 90 degrees, the separation plate A (20) is vertically arranged, the separation plate B (22) is horizontally arranged, the separation plate B (22) seals a raw water inlet branch pipe B (4), a raw water outlet branch pipe B (14), a filtered water outlet branch pipe B (9) and a filtered water inlet branch pipe B (17), raw water enters a water inlet cavity A (26) from a raw water inlet branch pipe A (3), is filtered by a filter screen A (19), enters a filter cavity A (27), and flows out through a filtered water outlet branch pipe A (8) and a filtered water outlet (7) for utilization; after the filter screen A (19) is used, the filter screen A enters a filtering backflushing cavity A (28) through a filtered water inlet (15) and a filtered water inlet branch pipe A (16), and impurities in a water returning cavity A (29) are carried and flow out through a raw water outlet branch pipe A (13) and a raw water outlet (12).

4. The anti-blocking online cleaning device according to claim 1, wherein every time the partition plate A (20) and the partition plate B (22) rotate for 90 degrees every time when the rotation is set, the dirt and debris accumulated in the water inlet cavity A (26) and the water inlet cavity B (30) enter the water outlet cavity A (29) and the water outlet cavity B (33) through the rotation of the partition plate A (20), the filter screen A (19), the partition plate B (22) and the filter screen B (21) twice, and are washed out of the housing (5).

5. An oil field reinjection water waste heat utilization system with an anti-blocking online cleaning device is characterized by comprising the anti-blocking online cleaning device as claimed in claims 1-4, wherein a water inlet (36) of a heat exchanger (34) is connected with a filtered water outlet (7), a water outlet (37) of the heat exchanger (34) is connected with a filtered water inlet (15), rubber balls are placed in a filter cavity A (27) and a filter cavity B (31), the rubber balls are isolated by a filter screen A (19) and circulate among the filter cavity A (27), a filtering backflushing cavity A28) and the heat exchanger (34), the rubber balls enter the heat exchanger (34) from a filtered water outlet branch pipe A (8) and collide with the inner surface of a heat exchange pipe (35) to remove dirt on the inner surface of the heat exchange pipe (35), then return to the filtering backflushing cavity A (28) from the water outlet (37), and rotate through the filter screen A (19) and a partition plate A, the rubber ball returns to the filter cavity A (27) from the filter backflushing cavity A (28) and circulates back and forth; the rubber balls are isolated among the filter cavity B (31), the filtering backflushing cavity B (32) and the heat exchanger (34) by the filter screen B (21) to circulate, enter the heat exchanger (34) through the filtered water outlet branch pipe B (9), collide with the inner surface of the heat exchange pipe (35), remove dirt on the inner surface of the heat exchange pipe (35), return to the filtering backflushing cavity B (32) through the water outlet (37), rotate through the filter screen B (21) and the partition plate B (22), and return to the filter cavity B (31) through the filtering backflushing cavity B (32) to circulate in a reciprocating mode.

6. An oil field reinjection water waste heat utilization system with an anti-blocking online cleaning device is characterized by comprising a buffer tank (38), a natural gas boiler (39), a clean water tank (40), an anti-blocking online cleaning device (41), a water mixing pump (42), a water injection pump (43), a natural gas inlet (44), a high-pressure generator (45), a low-temperature generator (46), a condenser (47), an absorber A (48), an absorber B (49), an evaporator A (50), an evaporator B (51), a heat exchanger A (52), a heat exchanger B (53), a solution pump A (54), a solution pump B (55), a solution pump C (56), a refrigerant pump (57), a solution pump D (58) and a mixing box (59), wherein the buffer tank (38) is internally extracted by the water mixing pump (42) and used for producing water mixing, and the buffer tank (38) is internally extracted by the water injection pump (43), the filling is water injection, the water blended in the buffer tank (38) enters the anti-blocking online cleaning device (41) through the water blending pump (42), enters heat exchange pipes of an absorber A (48) and an absorber B (49) after being filtered, is heated by absorption heat released by absorbing water vapor with lithium bromide solution in the absorber A (48) and the absorber B (49), then enters a condenser (47) through the absorber A (48) and the absorber B (49), is heated by the water vapor in the condenser (47), and after being heated by the absorber A (48), the absorber B (49) and the condenser (47) in two stages, enters the anti-blocking online cleaning device (41) to flush impurities left in the anti-blocking online cleaning device (41), enters the natural gas boiler (39) together with the impurities, and is heated again by the natural gas boiler (39); water injected into the buffer tank (38) enters the anti-blocking online cleaning device (41) through the water injection pump (43), enters the evaporator A (50) and the evaporator B (51) after being filtered to release heat, enters the anti-blocking online cleaning device (41) after releasing the heat to flush impurities left in the anti-blocking online cleaning device (41), and enters the clean water tank (40) together with the impurities; natural gas enters a high-pressure generator (45) from a natural gas inlet (44) to be combusted, a lithium bromide solution with middle concentration in the high-pressure generator (45) is heated, the lithium bromide solution with middle concentration is changed into a lithium bromide concentrated solution, the lithium bromide concentrated solution enters a heat exchanger A (52) to exchange heat with the lithium bromide solution with middle concentration, the lithium bromide solution with middle concentration is mixed with the lithium bromide solution with middle concentration from a mixing box (59) after heat exchange, the lithium bromide solution is conveyed to a heat exchanger B (53) by a solution pump B (55) to exchange heat with a dilute solution, the lithium bromide concentrated solution after heat exchange enters an absorber A (48) to absorb water vapor evaporated and flowed in by an evaporator A (50), generated absorption heat is released into mixed water conveyed by a mixed water pump (42), the lithium bromide concentrated solution is diluted into the lithium bromide solution with middle concentration, the lithium bromide solution is conveyed to the absorber B (49) by a solution pump C (56) to absorb the water vapor evaporated and flowed in, the generated absorbed heat is released into the mixed water conveyed by a mixed water pump (42), the lithium bromide solution with the intermediate concentration is changed into a dilute solution, the dilute solution is conveyed to a heat exchanger B (53) by a solution pump D (58) for heat exchange, then enters a low-temperature generator (46), is heated and concentrated by water vapor from a high-pressure generator (45), and after the lithium bromide solution with the intermediate concentration is changed into the lithium bromide solution with the intermediate concentration, the lithium bromide solution enters a mixing box (59) to be divided into two parts, one part of the lithium bromide solution is mixed with the concentrated solution from the high-pressure generator (45) and is circulated again, and the other part of the lithium bromide solution is conveyed to a heat exchanger A (52) by a solution pump A (54) for heat exchange with the concentrated solution of the lithium bromide evaporated from the high-pressure; the water vapor from the high-pressure generator (45) enters the low-temperature generator (46), the lithium bromide dilute solution of the low-temperature generator (46) is heated, water in the lithium bromide dilute solution is partially evaporated to form a lithium bromide solution with intermediate concentration, the evaporated water vapor enters the condenser (47) and exchanges heat with water mixed in the condenser (47), the water vapor is cooled to be liquid water, the liquid water enters the bottoms of the evaporator A (50) and the evaporator B (51), the liquid water at the bottoms of the evaporator A (50) and the evaporator B (51) is sprayed onto heat exchange tubes of the evaporator A (50) and the evaporator B (51) through a refrigerant pump (57), the heat injected into the heat exchange tubes is absorbed and evaporated, the heat enters the absorber A (48) and the absorber B (49) and is absorbed by the concentrated solution, and heat exchange is circulated.

7. The oil field reinjection water waste heat utilization system with the anti-blocking online cleaning device according to claim 6, wherein the water injection temperature T1 is 36 ℃, the water injection T3 temperature is 10 ℃, and 26 ℃ can be extracted from water injection; the temperature of the mixed water T1 is 36 ℃, the temperature of the mixed water T4 is 46 ℃, the heating and lifting temperature is 10 ℃, the mixed water enters a gas boiler to be heated to T2, the temperature is 75 ℃, the mixed water is conveyed to an oil well, wherein the temperature of T1 can float to a certain extent, the interval is 20-40 ℃, and T2 and T4 can be adjusted according to production requirements.