CN215412605U - Drilling fluid cooling system - Google Patents
Drilling fluid cooling system Download PDFInfo
- Publication number
- CN215412605U CN215412605U CN202121551576.9U CN202121551576U CN215412605U CN 215412605 U CN215412605 U CN 215412605U CN 202121551576 U CN202121551576 U CN 202121551576U CN 215412605 U CN215412605 U CN 215412605U
- Authority
- CN
- China
- Prior art keywords
- outlet
- lithium bromide
- drilling fluid
- pressure generator
- absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model discloses a method and a system for cooling drilling fluid, relates to the field of drilling, and aims to provide a new system for cooling drilling fluid, so as to reduce the circulating temperature of the drilling fluid and prolong the service life of downhole tools. The technical scheme of the utility model is as follows: the drilling fluid cooling system is used for exchanging heat between the drilling fluid and the secondary refrigerant, and the drilling fluid flows back to a drilling hole after being cooled; the secondary refrigerant exchanges heat with the lithium bromide refrigeration system to reduce the temperature, and a secondary refrigerant circulating pipeline is formed. The lithium bromide refrigeration system comprises an evaporator, an absorber, a generator and a condenser, wherein an input heat source is provided for the generator, water vapor is separated from a dilute lithium bromide solution and is changed into a concentrated lithium bromide solution, condensed water is formed after the water vapor is condensed, a refrigerant is cooled and vaporized by the condensed water, the condensed water is absorbed by the concentrated lithium bromide solution after being vaporized, and the dilute lithium bromide solution is obtained again and is circulated. The utility model adopts the secondary refrigerant to cool the drilling fluid and is suitable for cooling the drilling fluid.
Description
Technical Field
The utility model relates to the field of drilling, in particular to a method and a system for cooling drilling fluid through lithium bromide refrigeration.
Background
During drilling, the formation temperature increases with depth, and high temperatures affect not only the performance of the drilling fluid, but also the service life of the downhole tools. Aiming at the problem, on one hand, the high-temperature resistant material is applied to a drilling fluid system and drilling tool manufacturing materials, so that the high-temperature bottleneck is broken through, but the corresponding research difficulty is large, and the research and development cost is high; on the other hand, the drilling fluid is cooled, the circulating temperature of the drilling fluid can be effectively reduced by reducing the entry temperature of the drilling fluid, and the service life of the downhole tool is prolonged.
At present, a large amount of energy is additionally consumed for cooling the drilling fluid, and high-temperature waste gas is released in the drilling process to cause energy loss.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a novel method for cooling drilling fluid, and aims to reduce the circulating temperature of the drilling fluid and prolong the service life of downhole tools.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the drilling fluid cooling method comprises the steps that the drilling fluid exchanges heat with secondary refrigerant, and the drilling fluid flows back to a drilling hole after the temperature of the drilling fluid is reduced; the secondary refrigerant exchanges heat with the lithium bromide refrigeration system at the same time, the temperature of the secondary refrigerant is reduced, and the secondary refrigerant forms a secondary refrigerant circulation pipeline.
The lithium bromide refrigeration system comprises an evaporator, an absorber, a generator and a condenser, wherein an input heat source is provided for the generator, dilute lithium bromide solution enters the generator, water vapor is separated out and changed into concentrated lithium bromide solution, and the concentrated lithium bromide solution enters the absorber; and the water vapor separated by the generator enters a condenser to be condensed to form condensed water, the condensed water enters an evaporator and exchanges heat with secondary refrigerant, the condensed water is evaporated to water vapor, the water vapor enters an absorber to be absorbed by concentrated lithium bromide solution, dilute lithium bromide solution is obtained again, and the dilute lithium bromide solution enters the generator to be circulated.
Further, the method comprises the following steps: the lithium bromide refrigeration system also comprises a cooling tower and forms a cooling water circulation pipeline, and the path of the cooling water circulation pipeline is as follows: cooling tower → absorber → condenser → cooling tower.
Further, the method comprises the following steps: the drilling fluid firstly enters a drilling fluid pool for standing, is naturally and primarily cooled and precipitates impurities, and then exchanges heat with the secondary refrigerant through a plate heat exchanger; the input heat source is waste gas heat generated by well drilling.
Preferably: the condensed water exchanges heat with the coolant in a negative pressure state formed by the evaporator.
Specifically, the method comprises the following steps: the generator comprises a high-pressure generator and a low-pressure generator which are arranged in series, and an input heat source supplies heat to the high-pressure generator and the low-pressure generator in sequence; dilute lithium bromide solution enters a high-pressure generator firstly, high-temperature water vapor is separated out and is changed into concentrated lithium bromide solution, the high-temperature water vapor supplies heat for a low-pressure generator and then enters a condenser or directly enters the condenser, the concentrated lithium bromide solution directly enters the low-pressure generator or exchanges heat with the dilute lithium bromide solution generated by an absorber firstly and then enters the low-pressure generator; the concentrated lithium bromide solution is separated from water vapor in the low-pressure generator and changed into concentrated lithium bromide solution, the separated water vapor enters the condenser, and the generated concentrated lithium bromide solution directly enters the absorber or exchanges heat with the dilute lithium bromide solution generated by the absorber firstly and then enters the absorber.
The utility model also provides a drilling fluid cooling system which is used for implementing the drilling fluid cooling method. The drilling fluid cooling system comprises a first heat exchanger, a secondary refrigerant circulation pipeline and a lithium bromide refrigeration system, wherein the first heat exchanger is provided with a drilling fluid inlet and a drilling fluid outlet, the first heat exchanger is further provided with a secondary refrigerant inlet and a secondary refrigerant outlet, and the secondary refrigerant circulation pipeline is provided with a circulating pump and connects the first heat exchanger and the lithium bromide refrigeration system in series.
The lithium bromide refrigeration system comprises an evaporator, an absorber, a generator and a condenser, wherein the evaporator is provided with a secondary refrigerant inlet and a secondary refrigerant outlet and is connected in series with a secondary refrigerant circulation pipeline; a heat source pipeline is arranged in the generator in a penetrating manner, the generator is provided with a steam outlet and a solution outlet, the solution outlet is connected to a concentrated lithium bromide inlet of the absorber, the steam outlet is connected to a condenser, the condenser is provided with a condensed water outlet, and the condensed water outlet is connected with a condensed water inlet of the evaporator; the absorber and the condenser are respectively provided with a cooling water inlet and a cooling water outlet.
Further, the method comprises the following steps: the lithium bromide refrigeration system also comprises a cooling tower and forms a cooling water circulation pipeline, and the path of the cooling water circulation pipeline is as follows: cooling tower → absorber → condenser → cooling tower, cooling water circulation circuit also sets up the circulating pump.
Further, the method comprises the following steps: the drilling fluid cooling system further comprises a drilling fluid pool, the inlet end of the solution pump is located in the drilling fluid pool, and the outlet end of the solution pump is connected with the drilling fluid inlet of the first heat exchanger.
Further, the method comprises the following steps: the generator comprises a high-pressure generator and a low-pressure generator which are arranged in series, and a heat source pipeline sequentially penetrates through the high-pressure generator and the low-pressure generator along the airflow direction; a dilute lithium bromide outlet of the absorber is connected with a high-pressure generator, a solution outlet of the high-pressure generator is connected with a low-pressure generator, and a steam outlet of the high-pressure generator is connected with a heat supply pipeline of the low-pressure generator and then is connected with a condenser or is directly connected with the condenser; the solution outlet of the low pressure generator is connected with the concentrated lithium bromide inlet of the absorber, and the steam outlet of the low pressure generator is connected to the condenser.
Further, the method comprises the following steps: a second heat exchanger is arranged between a pipeline between the solution outlet of the high-pressure generator and the low-pressure generator and a pipeline between the dilute lithium bromide outlet of the absorber and the high-pressure generator; and a third heat exchanger is arranged between a pipeline between a solution outlet of the low-pressure generator and a concentrated lithium bromide inlet of the absorber and a pipeline between a dilute lithium bromide outlet of the absorber and the high-pressure generator.
Specifically, the method comprises the following steps: the first heat exchanger, the second heat exchanger and the third heat exchanger are plate heat exchangers, and the secondary refrigerant circulating pipeline adopts a plate heat exchanger structure in the evaporator; a throttle valve is arranged on a pipeline between a condensed water outlet of the condenser and a condensed water inlet of the evaporator.
The utility model has the beneficial effects that: the temperature control of the lithium bromide refrigeration system can reach 5 ℃ at least, and a new scheme can be provided for cooling the drilling fluid to low temperature. The utility model adopts an indirect cooling mode that the secondary refrigerant directly cools the drilling fluid and the lithium bromide refrigeration system cools the secondary refrigerant, and the temperature of the secondary refrigerant is controlled between 5 ℃ and 14 ℃, so that the well-entering temperature of the drilling fluid can be controlled in a lower range, thereby prolonging the drilling time, keeping the stability in the well and stably controlling the temperature change of the drilling fluid.
The lithium bromide refrigeration system forms a cooling water circulation pipeline, the cooling water is recycled, the condition that the cooling water is not required to be supplemented in the system operation process is avoided, and the temperature of the cooling water outlet is maintained at 25-32 ℃. The lithium bromide refrigeration system takes waste gas waste heat generated by drilling as heat energy, and compared with the traditional compressor refrigeration, the lithium bromide refrigeration system can save more energy and is green and environment-friendly. The condensed water exchanges heat with the secondary refrigerant under the negative pressure state, so that the evaporation of the condensed water is facilitated and heat is taken away. The generator comprises a high-pressure generator and a low-pressure generator which are arranged in series, and a heat source is fully utilized.
Drawings
FIG. 1 is a schematic of the present invention.
Reference numerals: the system comprises a first heat exchanger 1, a drilling fluid inlet 11, a drilling fluid outlet 12, a secondary refrigerant circulating pipeline 2, an evaporator 3, a condensed water inlet 31, a water vapor outlet 32, an absorber 4, a concentrated lithium bromide inlet 41, a dilute lithium bromide outlet 42, a high-pressure generator 51, a low-pressure generator 52, a second heat exchanger 53, a third heat exchanger 54, a condenser 6, a condensed water outlet 61, a throttle valve 62, a heat source pipeline 7, a cooling water circulating pipeline 8, a cooling tower 81, a drilling fluid pool 9 and a solution pump 91.
Detailed Description
The utility model will be further explained with reference to the drawings.
As shown in fig. 1, the first subject of the present invention is a method for cooling drilling fluid, in which the drilling fluid exchanges heat with coolant, and the temperature of the drilling fluid is reduced and then flows back to the drilling hole, so as to make the drilling fluid enter the well at a lower temperature, prolong the drilling time and keep the stability of the drilling fluid downhole. The temperature of the secondary refrigerant is increased after the heat exchange with the drilling fluid, the secondary refrigerant exchanges heat with the lithium bromide refrigeration system to reduce the temperature of the secondary refrigerant, and the secondary refrigerant forms a secondary refrigerant circulation pipeline 2. The drilling fluid can directly exchange heat with the secondary refrigerant after leaving the well, or the drilling fluid firstly enters the drilling fluid pool 9 for standing, and exchanges heat with the secondary refrigerant after natural primary cooling and impurity precipitation. The drilling fluid can be self-flowing or pumped by the solution pump 91, and the drilling fluid can be controlled to reach the required temperature by controlling the flow rate of the drilling fluid. In order to improve the heat exchange efficiency of the drilling fluid and the secondary refrigerant, a plate heat exchanger can be selected for heat exchange.
The lithium bromide refrigeration system comprises an evaporator 3, an absorber 4, a generator and a condenser 6, and provides an input heat source for the generator, wherein the input heat source refers to a heat source provided by the outside for the generator, can be any heat source, and can select waste heat of drilling wells, such as waste gas with waste heat generated in oil exploitation, in consideration of the practical situation of drilling wells, so that the purposes of energy conservation and environmental protection are achieved. The dilute lithium bromide solution enters a generator, under the action of an input heat source, water vapor is separated from the dilute lithium bromide solution and is changed into a concentrated lithium bromide solution, and the concentrated lithium bromide solution enters an absorber 4.
The water vapor separated by the generator enters the condenser 6 to be condensed to form condensed water, the condensed water enters the evaporator 3 to exchange heat with the secondary refrigerant and is evaporated to water vapor, and then the water vapor enters the absorber 4 to be absorbed by the concentrated lithium bromide solution to obtain the dilute lithium bromide solution again and enters the generator to be circulated, so that complete circulation is formed.
The coolant is actually cooled in the evaporator 6, and in order to vaporize the condensed water more to take away heat, the inside of the evaporator 6 is preferably in a negative pressure environment, the boiling point of water is reduced in the negative pressure environment, and the liquid condensed water is vaporized at a low temperature to take away heat of the coolant. The secondary refrigerant circulates in the secondary refrigerant circulation pipeline 2, and the secondary refrigerant circulation pipeline 2 can be provided with at least one circulating pump for providing power for the circulation of the secondary refrigerant circulation. In fig. 1, the coolant circulation circuit 2 is provided with a coolant circulation tank for controlling the flow rate and flow rate of the coolant circulation circuit 2. In order to provide sufficient heat release from the coolant in the evaporator 6, the coolant circulation line 2 can employ a plate heat exchanger configuration within the evaporator 3.
In order for the absorber 4 to absorb more water vapor from the evaporator 3, the temperature in the absorber 4 needs to be kept lower because the lithium bromide solution absorbs more water at a lower temperature. For example, the absorber 4 is provided with a cooling water inlet and outlet and is cooled by externally connected cooling water; or, the lithium bromide refrigeration system further comprises a cooling tower 81 and forms a cooling water circulation pipeline 8, and the path of the cooling water circulation pipeline 8 is as follows: cooling tower 81 → absorber 4 → condenser 6 → cooling tower 81. The cooling water circulation pipeline 8 can be provided with a circulating pump for providing power for the circulation of the cooling water. A valve, for example a throttle valve, is arranged in the line between the condenser 6 and the evaporator 3 to control the amount of condensed water entering the evaporator 6.
The generator may be one or more. In order to fully utilize the input heat source and improve the refrigeration efficiency, two or more generators can be arranged, and the generators are arranged in series. The following description will be made by taking the example of providing two generators. Referring to fig. 1, the generator comprises a high pressure generator 51 and a low pressure generator 52 arranged in series, with an input heat source supplying heat to the high pressure generator 51 and the low pressure generator 52 in sequence.
The dilute lithium bromide solution flowing out or pumped out from the absorber 4 firstly enters the high-pressure generator 51, and under the action of an input heat source, the dilute lithium bromide solution separates out high-temperature water vapor and becomes a relatively concentrated lithium bromide solution. The high temperature steam can directly enter the condenser 6 for condensation, or the high temperature steam supplies heat for the low pressure generator 52 and then enters the condenser 6 for condensation. The concentrated lithium bromide solution directly enters the low pressure generator 52 for concentration again, or exchanges heat with the dilute lithium bromide solution generated by the absorber 4, preferably adopts a plate heat exchanger structure, and then enters the low pressure generator 52 for concentration again. The concentrated lithium bromide solution is separated from the water vapor in the low pressure generator 52 and changed into the concentrated lithium bromide solution, the separated water vapor enters the condenser 6, and the generated concentrated lithium bromide solution directly enters the absorber 4, or exchanges heat with the dilute lithium bromide solution generated by the absorber 4, preferably adopts a plate heat exchanger structure, and then enters the absorber 4.
A second subject of the utility model is a drilling fluid cooling system for implementing the above drilling fluid cooling method. Referring to fig. 1, the drilling fluid cooling system comprises a first heat exchanger 1, a secondary refrigerant circulation pipeline 2 and a lithium bromide refrigeration system, wherein the first heat exchanger 1 is provided with a drilling fluid inlet 12 and a drilling fluid outlet 12, drilling fluid can directly enter the drilling fluid inlet 12 after leaving a well, and flows back to a drilling hole through the drilling fluid outlet 12 after being cooled. Alternatively, referring to fig. 1, the drilling fluid cooling system further comprises a drilling fluid reservoir 9, an inlet end of the solution pump 91 is located in the drilling fluid reservoir 9, and an outlet end of the solution pump 91 is connected to the drilling fluid inlet 12 of the first heat exchanger 1. The first heat exchanger 1 is also provided with a secondary refrigerant inlet and outlet, and the secondary refrigerant circulating pipeline 2 is provided with at least one circulating pump and connects the first heat exchanger 1 and the lithium bromide refrigeration system in series. The first heat exchanger 1 is preferably a plate heat exchanger.
The lithium bromide refrigeration system comprises an evaporator 3, an absorber 4, a generator and a condenser 6, wherein the evaporator 3 is provided with a secondary refrigerant inlet and outlet and is connected in series with a secondary refrigerant circulating pipeline 2, so that the secondary refrigerant is cooled after passing through the evaporator 3, and the secondary refrigerant circulating pipeline 2 preferably adopts a plate heat exchanger structure in the evaporator 3. The evaporator 3 is also provided with a condensed water inlet 31 and a water vapor outlet 32, the water vapor outlet 32 is connected to the absorber 4, the absorber 4 is provided with a concentrated lithium bromide inlet 41 and a dilute lithium bromide outlet 42, and the dilute lithium bromide outlet 42 is connected to the generator. The concentrated lithium bromide solution absorbs water vapor from the evaporator 3 in the absorber 4 to produce a dilute lithium bromide solution which is discharged from the dilute lithium bromide outlet 42 and pumped to the generator. The generator is provided with a steam outlet and a solution outlet, the solution outlet is connected to a concentrated lithium bromide inlet 41 of the absorber 4, the steam outlet is connected to the condenser 6, a heat source pipeline 7 penetrates through the generator, an input heat source is introduced into the heat source pipeline 7, so that the dilute lithium bromide solution from the absorber 4 is concentrated, water vapor is separated, and the concentrated lithium bromide solution is obtained. The dilute lithium bromide solution and the concentrated lithium bromide solution in the present application are relative concepts, and there is no specific concentration requirement. The concentrated lithium bromide solution enters the absorber 4 for circulation. The condenser 6 is provided with a condensate outlet 61, the condensate outlet 61 being connected to the condensate inlet 31 of the evaporator 3. The water vapor separated from the generator is condensed in the condenser 6, and the condensed water enters the evaporator 3, thereby realizing circulation. A throttle valve 62 is provided in a line between the condensed water outlet 61 of the condenser 6 and the condensed water inlet 31 of the evaporator 3 to adjust the flow rate of the condensed water.
It is desirable to maintain a lower temperature in the absorber 4 in view of the fact that lithium bromide solutions absorb more water at lower temperatures. The absorber 4 may be provided with a cooling water inlet and outlet respectively, and is externally connected with cooling water to maintain the low temperature state of the absorber 4. The condenser 6 is required to condense the water vapor separated from the generator, and therefore, it is also preferable to provide a cooling water inlet and outlet. In order to cool the absorber 4 and the condenser 6 simultaneously, the lithium bromide refrigeration system further comprises a cooling tower 81 and forms a cooling water circulation pipeline 8, and the path of the cooling water circulation pipeline 8 is as follows: cooling tower 81 → absorber 4 → condenser 6 → cooling tower 81, through closed cooling water circulation pipeline 8, no additional cooling water is needed in the operation process of the lithium bromide refrigeration system, and the temperature of the cooling water outlet is maintained at 25-32 ℃. And the cooling water circulation pipeline 8 is also provided with a circulating pump for providing power for the circulation of the cooling water.
The generator can be one, but in order to make full use of the input heat source and improve the concentration effect of the generator on the lithium bromide solution, at least two generators are arranged in series. The following description will be made by taking the example of providing two generators. Referring to fig. 1, the generator includes a high pressure generator 51 and a low pressure generator 52 arranged in series, and the heat source pipe 7 passes through the high pressure generator 51 and the low pressure generator 52 in order in the direction of the air flow.
The dilute lithium bromide outlet 42 of the absorber 4 is connected to the high pressure generator 51, the solution outlet 512 of the high pressure generator 51 can be directly connected to the low pressure generator 52, or a second heat exchanger 53 is arranged between a pipeline between the solution outlet 512 of the high pressure generator 51 and the low pressure generator 52 and a pipeline between the dilute lithium bromide outlet 42 of the absorber 4 and the high pressure generator 51, and then connected to the low pressure generator 52, as shown in fig. 1. The steam outlet 511 of the high pressure generator 51 is directly connected to the condenser 6, or the steam outlet 511 is connected to the heat supply pipeline of the low pressure generator 52 and then connected to the condenser 6, as shown in fig. 1.
The vapor outlet 521 of the low pressure generator 52 is connected to the condenser 6 and the solution outlet 522 of the low pressure generator 52 may be directly connected to the concentrated lithium bromide inlet 41 of the absorber 4, or a third heat exchanger 54 may be provided between the "line between the solution outlet 521 of the low pressure generator 52 and the concentrated lithium bromide inlet 41 of the absorber 4" and the "line between the dilute lithium bromide outlet 42 of the absorber 4 and the high pressure generator 51", see fig. 1. The second heat exchanger 53 and the third heat exchanger 54 are both used for recovering waste heat in the concentrated lithium bromide solution, and the second heat exchanger 53 and the third heat exchanger 54 can be plate heat exchangers.
Claims (6)
1. Drilling fluid cooling system, its characterized in that: the device comprises a first heat exchanger (1), a secondary refrigerant circulation pipeline (2) and a lithium bromide refrigeration system, wherein the first heat exchanger (1) is provided with a drilling fluid inlet (11) and a drilling fluid outlet (12), the first heat exchanger (1) is also provided with a secondary refrigerant inlet and outlet, the secondary refrigerant circulation pipeline (2) is provided with a circulation pump, and the first heat exchanger (1) and the lithium bromide refrigeration system are connected in series;
the lithium bromide refrigeration system comprises an evaporator (3), an absorber (4), a generator and a condenser (6), wherein the evaporator (3) is provided with a secondary refrigerant inlet and outlet and is connected in series with a secondary refrigerant circulating pipeline (2), the evaporator (3) is also provided with a condensed water inlet (31) and a water vapor outlet (32), the water vapor outlet (32) is connected into the absorber (4), the absorber (4) is provided with a concentrated lithium bromide inlet (41) and a dilute lithium bromide outlet (42), and the dilute lithium bromide outlet (42) is connected into the generator; a heat source pipeline (7) penetrates through the generator, the generator is provided with a steam outlet and a solution outlet, the solution outlet is connected to a concentrated lithium bromide inlet (41) of the absorber (4), the steam outlet is connected to the condenser (6), the condenser (6) is provided with a condensed water outlet (61), and the condensed water outlet (61) is connected with a condensed water inlet (31) of the evaporator (3); the absorber (4) and the condenser (6) are respectively provided with a cooling water inlet and a cooling water outlet.
2. The drilling fluid cooling system of claim 1, wherein: the lithium bromide refrigeration system also comprises a cooling tower (81) and forms a cooling water circulation pipeline (8), and the path of the cooling water circulation pipeline (8) is as follows: cooling tower (81) → absorber (4) → condenser (6) → cooling tower (81), and a circulation pump is further provided in cooling water circulation line (8).
3. The drilling fluid cooling system of claim 1, wherein: the drilling fluid cooling system further comprises a drilling fluid pool (9), the inlet end of the solution pump (91) is located in the drilling fluid pool (9), and the outlet end of the solution pump (91) is connected with the drilling fluid inlet (11) of the first heat exchanger (1).
4. The drilling fluid cooling system of claim 1, 2 or 3, wherein: the generator comprises a high-pressure generator (51) and a low-pressure generator (52) which are arranged in series, and the heat source pipeline (7) sequentially penetrates through the high-pressure generator (51) and the low-pressure generator (52) along the airflow direction; a dilute lithium bromide outlet (42) of the absorber (4) is connected to the high-pressure generator (51), a solution outlet (512) of the high-pressure generator (51) is connected to the low-pressure generator (52), and a steam outlet (511) of the high-pressure generator (51) is connected to a heat supply pipeline of the low-pressure generator (52) and then is connected to the condenser (6) or is directly connected to the condenser (6); the solution outlet (522) of the low-pressure generator (52) is connected with the concentrated lithium bromide inlet (41) of the absorber (4), and the steam outlet (521) of the low-pressure generator (52) is connected with the condenser (6).
5. The drilling fluid cooling system of claim 4, wherein: a second heat exchanger (53) is arranged between a pipeline between the solution outlet of the high-pressure generator (51) and the low-pressure generator (52) and a pipeline between the dilute lithium bromide outlet (42) of the absorber (4) and the high-pressure generator (51); a third heat exchanger (54) is arranged between a pipeline between a solution outlet of the low-pressure generator (52) and a concentrated lithium bromide inlet (41) of the absorber (4) and a pipeline between a dilute lithium bromide outlet (42) of the absorber (4) and the high-pressure generator (51).
6. The drilling fluid cooling system of claim 5, wherein: the first heat exchanger (1), the second heat exchanger (53) and the third heat exchanger (54) are plate heat exchangers, and the secondary refrigerant circulating pipeline (2) adopts a plate heat exchanger structure in the evaporator (3); a throttle valve (62) is provided on a line between a condensed water outlet (61) of the condenser (6) and a condensed water inlet (31) of the evaporator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121551576.9U CN215412605U (en) | 2021-07-08 | 2021-07-08 | Drilling fluid cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121551576.9U CN215412605U (en) | 2021-07-08 | 2021-07-08 | Drilling fluid cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215412605U true CN215412605U (en) | 2022-01-04 |
Family
ID=79647895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121551576.9U Active CN215412605U (en) | 2021-07-08 | 2021-07-08 | Drilling fluid cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215412605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776239A (en) * | 2022-05-06 | 2022-07-22 | 吉林大学 | High-temperature drilling fluid cooling system |
-
2021
- 2021-07-08 CN CN202121551576.9U patent/CN215412605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776239A (en) * | 2022-05-06 | 2022-07-22 | 吉林大学 | High-temperature drilling fluid cooling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2447483B1 (en) | Rankine cycle integrated with absorption chiller | |
| CN201225296Y (en) | Water ring vacuum pump capable of improving condensing steam turbine efficiency | |
| CN201705400U (en) | Power plant cooling system adopting waste heat refrigeration form to increase cooling efficiency | |
| CN101509716A (en) | Electric power plant cooling system for enhancing cooling efficiency by utilizing residual heat refrigeration manner | |
| WO2019114536A1 (en) | Constructed cold source energy recovery system, heat engine system and energy recovery method | |
| CN105674558A (en) | Gas engine driven steam compressing and absorbing combined type heat pump hot water unit running method | |
| CN202216448U (en) | Diffusion absorption refrigeration and vapor compression refrigeration combined recycle system | |
| CN102322705B (en) | Circulating device combining diffusing absorption-type refrigeration and vapor compression refrigeration | |
| CN215412605U (en) | Drilling fluid cooling system | |
| CN105972858A (en) | System and method for supplying energy and storing energy by utilizing waste heat of air compressor | |
| CN212299530U (en) | Refrigerating system with pressure control device | |
| CN110173922B (en) | Steam type lithium bromide absorption heat pump unit capable of double-effect refrigeration | |
| KR20120045468A (en) | Organic rankine cycle turbo generation system generating cooling air and hot water | |
| CN105066502B (en) | A kind of direct-fired absorption refrigeration method and device for reclaiming the heat of transformation | |
| CN104567078B (en) | Intercooling type two-stage absorption refrigeration system | |
| CN113446752A (en) | Drilling fluid cooling method and system | |
| CN211177494U (en) | Single-effect heating and double-effect refrigerating two-section type lithium bromide absorption heat pump unit | |
| CN211233438U (en) | Steam type lithium bromide absorption heat pump unit capable of achieving double-effect refrigeration | |
| CN110173924B (en) | Steam type lithium bromide absorption heat pump unit for single-effect heating double-effect refrigeration | |
| CN211233437U (en) | Single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit | |
| CN101487644B (en) | Absorption type refrigeration circulating system and refrigeration method | |
| CN211233436U (en) | Two-section lithium bromide absorption heat pump unit capable of achieving double-effect refrigeration | |
| CN103822402B (en) | Cooling heating water system | |
| CN113432104A (en) | Energy-saving system and method for electric steam boiler with condensed water circulation | |
| CN113091349A (en) | High-efficient absorption heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |