CN212005189U - Energy-saving water injection device with multiple pumps controlled by one pump - Google Patents
Energy-saving water injection device with multiple pumps controlled by one pump Download PDFInfo
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- CN212005189U CN212005189U CN202020440074.8U CN202020440074U CN212005189U CN 212005189 U CN212005189 U CN 212005189U CN 202020440074 U CN202020440074 U CN 202020440074U CN 212005189 U CN212005189 U CN 212005189U
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Abstract
The utility model belongs to the technical field of industrial control, concretely relates to energy-conserving water injection device and method of a pump accuse multi-pump. The device consists of a water inlet system, a booster pump unit, a first stage-dismantling water injection pump unit, a second stage-dismantling water injection pump unit, a third stage-dismantling water injection pump unit, a header part and a special control system. The utility model discloses a booster pump mainly by a set of variable frequency speed governing concatenates the parallelly connected centrifugal pump unit of tearing open of multiunit, carries out high-efficient automatic water injection according to the terminal demand. The lift and flow of the water injection system can combine a plurality of groups of split centrifugal pump units which are connected in parallel according to working conditions, and water is injected as required through variable-frequency speed regulation of the booster pump, so that the large-range regulation of the pressure and flow of the system by coarse control and fine regulation is realized, and a plurality of centrifugal pumps can work in a high-efficiency area at the same time. Each sensor sends the acquired real-time signals to a special control system, and an automatic water injection technology with the functions of automatic engineering parameter acquisition, system interlocking protection, automatic start and stop and the like is realized.
Description
Technical Field
The utility model belongs to the technical field of industrial control, concretely relates to pump accuse pump technique and system control, in particular to energy-conserving water injection device of a pump accuse multi-pump.
Background
In the process of oilfield water injection, when the water injection pressure and flow required by a pipeline are changed, the coordination of work among water injection units is complex, and all links in the water injection process need manual execution, so that the automation degree is low, the information feedback speed is low, the water injection parameters cannot be adjusted in time, and the range is limited.
The common centrifugal pump unit in the traditional water injection system has low efficiency and high water supply unit consumption, and the system has no regulation function; meanwhile, the water injection site often faces the problems of small discharge capacity and large change of water injection demand. The pressure and flow of the outlet of a plurality of traditional water injection centrifugal pumps meet the requirements by adjusting the opening of the valves at the outlet of the centrifugal pumps, so that the outlet valves cannot be completely opened, and are usually operated under a pressure build-up condition, so that energy is wasted on the valves; although the direct high-pressure large frequency conversion system in recent years realizes adjustable pressure and flow, the centrifugal pump deviates from a high-efficiency area to reduce the pump efficiency.
Disclosure of Invention
The utility model aims to provide an energy-saving water injection device and method with one pump for controlling a plurality of pumps aiming at the conditions that the load change of a water injection site is large and the adjustable effect of a water injection centrifugal pump is not ideal; the water injection centrifugal pump units which run in parallel are disassembled, a booster pump unit is established in front of the water injection centrifugal pump units, the change of the water injection amount is realized by adjusting the rotating speed of the booster pump, and the water injection work can be efficiently and quickly completed. The utility model discloses a can realize many centrifugal pumps simultaneous workings in the high-efficient district, the pressure flow of system can be earlier coarse control fine setting again, realizes the pressure flow control on a large scale, and the automatic water injection technique of functions such as engineering parameter automatic acquisition, system interlock protection and automatic start-stop.
In order to achieve the above object, an aspect of the present invention discloses an energy-saving water injection device with multiple pumps controlled by one pump, which is composed of a water inlet system, a booster pump unit, a first stage-dismantling water injection pump unit, a second stage-dismantling water injection pump unit, a third stage-dismantling water injection pump unit, a manifold part and a special control system.
The first, second and third split-level water injection pump units are connected in parallel, the output end of the first, second and third split-level water injection pump units is connected with the manifold part, and the inlet end of the first, second and third split-level water injection pump units is sequentially connected with the water inlet system and the booster pump unit; the special control system respectively controls the water inlet system, the booster pump unit, the first split-level water injection pump unit, the second split-level water injection pump unit, the third split-level water injection pump unit and the header part.
Wherein, water inlet system including filter room, water storage tank group, level sensor, filter room and water storage tank group and pass through high-pressure line and connect, level sensor is located water storage tank group for the liquid level of monitoring water storage tank group. The water inlet system provides qualified and sufficient water quantity for the device.
The booster pump unit comprises a first stop valve of the booster pump unit, a second stop valve of the booster pump unit, a third stop valve of the booster pump unit, a booster pump and a pressure sensor of the booster pump unit. The booster pump unit second stop valve, the booster pump and the booster pump unit third stop valve are connected in sequence and then connected in parallel with the booster pump unit first stop valve, and then connected in series with the booster pump unit pressure sensor.
The first stage water injection pump unit of tearing open including the first stop valve of the first stage water injection pump unit of tearing open, first water injection pump, the first stage water injection pump unit second stop valve of tearing open, first stage water injection pump unit pressure sensor and the first check valve of tearing open that connect gradually.
The second stage-splitting water injection pump unit comprises a first stop valve of the second stage-splitting water injection pump unit, a second water injection pump, a second stop valve of the second stage-splitting water injection pump unit, a pressure sensor of the second stage-splitting water injection pump unit and a second check valve which are sequentially connected.
The third water injection pump unit of tearing open level is including the first stop valve of third water injection pump unit, third water injection pump unit second stop valve, third water injection pump unit pressure sensor and the third check valve are torn open to the third that connects gradually.
The collecting pipe part comprises a first collecting pipe part stop valve, a second collecting pipe part stop valve, a third collecting pipe part stop valve, a collecting pipe part pressure sensor and a flow sensor. The first stop valve of the collecting pipe part, the second stop valve of the collecting pipe part and the third stop valve of the collecting pipe part are connected in parallel and then are sequentially connected with the flow sensor and the pressure sensor of the collecting pipe part. The signals of the pressure sensor and the flow sensor are sent to a special control system, and the flow and the pressure required by the special control system are determined by the water consumption of the header terminal.
The special control system comprises a control cabinet, a computer monitoring system and a variable frequency speed regulation control system. The computer monitoring system, the variable frequency speed regulation control system and the control cabinet are connected in a wired or wireless mode. The variable-frequency speed regulation control system is connected with the booster pump, changes the flow and the pressure of the outlet of the booster pump unit by controlling the rotating speed of the booster pump, and indirectly controls the outlet flow and the pressure of the first split-level water injection pump unit, the second split-level water injection pump unit and the third split-level water injection pump unit at the same time. The special control system performs optimization analysis on the acquired pressure, flow and liquid level signals, gives a control instruction, and adjusts the on-off of each device through the control cabinet to realize the functions of control, interlocking protection, automatic start-stop and the like.
The variable-frequency speed regulation control system is connected with the booster pump unit, changes the flow and the pressure of the outlet of the booster pump unit by controlling the rotating speed of the booster pump unit, and indirectly controls the outlet flow and the pressure of the first deporting water injection pump unit, the second deporting water injection pump unit and the third deporting water injection pump unit at the same time.
Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:
(1) the utility model discloses in tear the level open many water injection centrifugal pumps to make pump work in the high efficiency region, rationally match the booster pump according to the parameter of tearing the level open again, and to its variable frequency speed governing come control system's pressure and flow, many water injection centrifugal pump outlet valves all can open completely like this, and the energy of waste on a plurality of valves will be practiced thrift and get off.
(2) The utility model discloses water injection system's lift and flow size can make up the parallelly connected class centrifugal pump of tearing open of multiunit earlier according to the operating mode, confirms the workstation number of water injection pump, again to the booster pump variable frequency speed governing who matches to realize earlier coarse control fine setting again, control lift and flow on a large scale.
(3) The utility model discloses the addition of booster pump has improved many water injection centrifugal pump entry pressure to improve the working condition of water injection centrifugal pump, made the operating point of water injection centrifugal pump remove to the high-efficient district, consequently its efficiency also can increase.
(4) The water injection system of the utility model can automatically adjust the pressure and the flow, thus reducing the pump pipe pressure difference of a plurality of centrifugal pumps to the maximum extent until the pressure reaches zero; the reduction of the pressure difference of the pump pipe is actually the improvement of the useful power of the system, thereby achieving the purpose of energy conservation; the reasonable matching of the water injection centrifugal pump and the booster pump can improve the system efficiency and reduce the load of the booster pump.
(5) The utility model discloses flowmeter, pressure sensor etc. on each pipeline, booster pump unit and each water injection centrifugal pump send the real-time data who gathers to the special control system of development on to the signal of gathering carries out optimization analysis, gives reasonable control command, adjusts the break-make of each equipment through the switch board, realizes automatic water injection and control protection.
Drawings
Fig. 1 is a structural schematic and a flow chart of the energy-saving water injection device with one pump controlling multiple pumps of the utility model.
The specific implementation mode is as follows:
as shown in figure 1, the energy-saving water injection device with one pump for controlling multiple pumps comprises a water inlet system 1, a booster pump unit 2, a first split-level water injection pump unit 3, a second split-level water injection pump unit 4, a third split-level water injection pump unit 5, a header part 6 and a special control system 7.
The first, second and third split-level water injection pump units 3, 4 and 5 are connected in parallel, the output end is connected with the manifold part 6, and the inlet end is connected with the water inlet system 1 and the booster pump unit 2 in sequence; the special control system 7 respectively controls the water inlet system 1, the booster pump unit 2, the first stage-splitting water injection pump unit 3, the second stage-splitting water injection pump unit 4, the third stage-splitting water injection pump unit 5 and the header part 6.
The water inlet system 1 comprises a filtering room 101, a water storage tank set 102 and a liquid level sensor 103, wherein the filtering room 101 is connected with the water storage tank set 102 through a high-pressure pipeline, and the liquid level sensor 103 is positioned in the water storage tank set 102 and used for monitoring the liquid level of the water storage tank set 102. The water inlet system provides qualified and sufficient water quantity for the device.
The booster pump unit 2 includes a booster pump unit first stop valve 201, a booster pump unit second stop valve 202, a booster pump unit third stop valve 204, a booster pump 203, and a booster pump unit pressure sensor 205. The booster pump unit second stop valve 202, the booster pump 203 and the booster pump unit third stop valve 204 are connected in sequence and then connected in parallel with the booster pump unit first stop valve 201, and then connected in series with the booster pump unit pressure sensor 205.
The first water injection pump unit 3 includes a first stop valve 301, a first water injection pump 302, a second stop valve 303, a pressure sensor 304 and a first check valve 305, which are connected in sequence.
The second stage-splitting water injection pump unit 4 comprises a second stage-splitting water injection pump unit first stop valve 401, a second water injection pump 402, a second stage-splitting water injection pump unit second stop valve 403, a second stage-splitting water injection pump unit pressure sensor 404 and a second check valve 405 which are connected in sequence.
The third stage-splitting water injection pump unit 5 comprises a third stage-splitting water injection pump unit first stop valve 501, a third water injection pump 502, a third stage-splitting water injection pump unit second stop valve 503, a third stage-splitting water injection pump unit pressure sensor 504 and a third stop valve 505 which are sequentially connected.
The header portion 6 includes a header portion first cut valve 601, a header portion second cut valve 602, a header portion third cut valve 603, a header portion pressure sensor 604, and a flow sensor 605. The first header portion stop valve 601, the second header portion stop valve 602, and the third header portion stop valve 603 are connected in parallel and then connected to the flow sensor 605 and the header portion pressure sensor 604 in this order. The signals of the pressure sensor and the flow sensor are sent to a special control system, and the flow and the pressure required by the special control system are determined by the water consumption of the header terminal.
The special control system 7 comprises a control cabinet 701, a computer monitoring system 702 and a variable frequency speed control system 703. The computer monitoring system 702, the variable-frequency speed-regulating control system 703 and the control cabinet 701 are connected in a wired or wireless manner. The variable-frequency speed control system 703 is connected with the booster pump 203, changes the flow and pressure of the outlet of the booster pump unit 2 by controlling the rotating speed of the booster pump 203, and indirectly controls the outlet flow and pressure of the first, second and third water injection pump units 3, 4 and 5. The special control system 7 performs optimization analysis on the acquired pressure, flow and liquid level signals, gives a control instruction, and adjusts the on-off of each device through the control cabinet 701 to realize the functions of control, interlocking protection, automatic start-stop and the like.
The variable-frequency speed control system 703 is connected to the booster pump unit 2, changes the flow and pressure at the outlet of the booster pump unit 2 by controlling the rotation speed of the booster pump unit 2, and indirectly controls the flow and pressure at the outlet of the first, second and third water injection pump units 3, 4 and 5.
Example 1
The method comprises the following steps of prolonging the Huo 46 water injection station of the Almon and Chuan oil extraction plant of the oil field:
implement the utility model discloses the preceding condition: the field has no booster pump, and the operation parameters of a single water injection pump are as follows: pressure 2MPa, flow 38.3m3H, current 82A, voltage 400V, power factor 0.85. Through calculation: the active power is 21kW and the active power is 48kW (P for the two pumps)196kW), unit efficiency is 43%, and water injection unit consumption is 1.25 kW.h/m3。
Implement the utility model discloses a condition: the pumping station needs to have large-range pressure and flow regulation capacity, and the pressure and flow regulation capacity is increasedA booster pump with variable frequency and adjustable speed and a special control system thereof; the existing three water injection pumps are provided with one standby function and two functions, the three water injection pumps are disassembled, the requirement can be met by disassembling the first stage, and a scheme of controlling two by one and remaining one standby pump is adopted. The operation parameters are as follows: the pressure of the water injection pump is 1.5MPa, the pressure of the booster pump is 0.5MPa, the total pressure is 2.0MPa, and the power of the booster pump is 6 KW. Through calculation: the power of the water injection pumps is 55KW (two pumps with 58 percent of pump efficiency), and the total running power of the system is P055KW +6KW is 61KW, the unit consumption of water injection is 0.79 kW.h/m3。
Compare with utility model preceding water injection system power when operation:
△P＝P1－P0＝96–61＝35KW
electricity is saved every day: 35KW multiplied by 24h 840KWh
Electricity is saved each year: 840KWh × 360 ═ 302400KWh
Electricity per degree (0.6 yuan per mains): 302400KWh × 0.6 yuan/KWh 18 ten thousand yuan
The unit consumption is reduced to 1.25-0.79 and 0.46 kW.h/m3
The utility model discloses dual-purpose one water injection system pressure control range 0.2 ~ 0.6MPa in the example, flow control scope 20%, water supply pump efficiency improves 3% ~ 7%, and the water injection unit consumption descends 10%, and has improved the automation level of pump station, and energy-conserving effect is obvious.
Through the analysis and comparison, the energy-saving water injection method of one-pump-controlled multi-pump can greatly improve the discharge capacity of the pump station on the basis of greatly reducing the unit consumption of water injection, the pressure and the flow are adjustable within the range of 20 percent, and simultaneously, a plurality of water injection pumps are kept to work in a high-efficiency area all the time, and the adaptive range of the water injection pumps and a pipe network is widened, so that the dynamic balance between the water injection pumps and the pipe network is easily realized. From the development of oil fields, the water injection amount is increased year by year, the discharge capacity of a pump station can be improved by an energy-saving water injection method of controlling multiple pumps by one pump, and the problem of adjusting the pressure and the flow according to needs can be solved without adding other water injection equipment.
Claims (9)
1. An energy-saving water injection device with a plurality of pumps controlled by one pump is characterized by comprising a water inlet system, a booster pump unit, a first split-level water injection pump unit, a second split-level water injection pump unit, a third split-level water injection pump unit, a header part and a special control system; the first, second and third split-level water injection pump units are connected in parallel, the output end of the first, second and third split-level water injection pump units is connected with the manifold part, and the inlet end of the first, second and third split-level water injection pump units is sequentially connected with the water inlet system and the booster pump unit; the special control system respectively controls the water inlet system, the booster pump unit, the first split-level water injection pump unit, the second split-level water injection pump unit, the third split-level water injection pump unit and the header part.
2. The energy-saving water injection device with one pump for multiple pumps as claimed in claim 1, wherein the water inlet system comprises a filtering chamber, a water storage tank set, and a liquid level sensor, the filtering chamber and the water storage tank set are connected through a pipeline, the liquid level sensor is positioned in the water storage tank set and used for monitoring the liquid level of the water storage tank set, and the water inlet system provides qualified and sufficient water for the device.
3. The energy-saving water injection device with one pump for controlling multiple pumps as claimed in claim 1, wherein the booster pump unit comprises a first stop valve of the booster pump unit, a second stop valve of the booster pump unit, a third stop valve of the booster pump unit, the booster pump and a pressure sensor of the booster pump unit; the booster pump unit second stop valve, the booster pump and the booster pump unit third stop valve are connected in sequence and then connected in parallel with the booster pump unit first stop valve, and then connected in series with the booster pump unit pressure sensor.
4. The energy-saving water injection device with one pump controlling multiple pumps as claimed in claim 1, wherein the first stage-splitting water injection pump unit comprises a first stop valve of the first stage-splitting water injection pump unit, a first water injection pump, a second stop valve of the first stage-splitting water injection pump unit, a pressure sensor of the first stage-splitting water injection pump unit and a first check valve which are connected in sequence.
5. The energy-saving water injection device with one pump-controlled and multiple pumps as claimed in claim 1, wherein the second water injection pump unit comprises a first stop valve of the second water injection pump unit, a second water injection pump, a second stop valve of the second water injection pump unit, a pressure sensor of the second water injection pump unit and a second check valve which are connected in sequence.
6. The energy-saving water injection device with one pump-controlled and multiple pumps as claimed in claim 1, wherein the third water injection pump unit comprises a first stop valve of the third water injection pump unit, a third water injection pump, a second stop valve of the third water injection pump unit, a pressure sensor of the third water injection pump unit and a third check valve which are connected in sequence.
7. The energy-saving water injection device with one pump controlling multiple pumps as claimed in claim 1, wherein the header part comprises a header part first stop valve, a header part second stop valve, a header part third stop valve, a header part pressure sensor and a flow sensor; the first stop valve of the manifold part, the second stop valve of the manifold part and the third stop valve of the manifold part are connected in parallel and then are sequentially connected with the flow sensor and the pressure sensor of the manifold part; the signals of the pressure sensor and the flow sensor are sent to a special control system, and the flow and the pressure required by the special control system are determined by the water consumption of the header terminal.
8. The energy-saving water injection device with one pump for multiple pumps as claimed in claim 1, wherein the special control system comprises a control cabinet, a computer monitoring system and a variable frequency speed control system; the computer monitoring system, the variable-frequency speed regulation control system and the control cabinet are connected in a wired or wireless mode; the special control system performs optimization analysis on the acquired pressure, flow and liquid level signals, gives a control instruction, and adjusts the on-off of each device through the control cabinet to realize the functions of control, interlocking protection, automatic start-stop and the like.
9. The energy-saving water injection device with one pump controlling multiple pumps as claimed in claim 8, wherein the variable frequency speed control system is connected to the booster pump unit, and the flow rate and pressure at the outlet of the booster pump unit are changed by controlling the rotation speed of the booster pump unit, and the flow rate and pressure at the outlet of the first, second and third deporting water injection pump units are indirectly controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440074.8U CN212005189U (en) | 2020-03-30 | 2020-03-30 | Energy-saving water injection device with multiple pumps controlled by one pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440074.8U CN212005189U (en) | 2020-03-30 | 2020-03-30 | Energy-saving water injection device with multiple pumps controlled by one pump |
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| CN212005189U true CN212005189U (en) | 2020-11-24 |
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| CN202020440074.8U Expired - Fee Related CN212005189U (en) | 2020-03-30 | 2020-03-30 | Energy-saving water injection device with multiple pumps controlled by one pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306448A (en) * | 2020-03-30 | 2020-06-19 | 西安石油大学 | Energy-saving water injection device and method for one-pump-controlled multi-pump |
| CN112922569A (en) * | 2021-02-07 | 2021-06-08 | 西安石油大学 | Method for determining optimal operation state of pressurization and partial pressure mode of oil field water injection pipe network |
| CN114876759A (en) * | 2022-01-25 | 2022-08-09 | *** | Intelligent secondary booster pump for oil exploitation and boosting method |
-
2020
- 2020-03-30 CN CN202020440074.8U patent/CN212005189U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306448A (en) * | 2020-03-30 | 2020-06-19 | 西安石油大学 | Energy-saving water injection device and method for one-pump-controlled multi-pump |
| CN112922569A (en) * | 2021-02-07 | 2021-06-08 | 西安石油大学 | Method for determining optimal operation state of pressurization and partial pressure mode of oil field water injection pipe network |
| CN112922569B (en) * | 2021-02-07 | 2022-06-21 | 西安石油大学 | Method for determining optimal operation state of pressurization and partial pressure mode of oil field water injection pipe network |
| CN114876759A (en) * | 2022-01-25 | 2022-08-09 | *** | Intelligent secondary booster pump for oil exploitation and boosting method |
| CN114876759B (en) * | 2022-01-25 | 2024-02-13 | 东营启辉石油设备有限责任公司 | Secondary booster pump for petroleum exploitation and boosting method |
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Granted publication date: 20201124 |