CN219389690U - Cold water protection device of supercritical unit circulating pump for dry-wet undisturbed switching - Google Patents
Cold water protection device of supercritical unit circulating pump for dry-wet undisturbed switching Download PDFInfo
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- CN219389690U CN219389690U CN202320643759.6U CN202320643759U CN219389690U CN 219389690 U CN219389690 U CN 219389690U CN 202320643759 U CN202320643759 U CN 202320643759U CN 219389690 U CN219389690 U CN 219389690U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The utility model relates to the technical field of auxiliary devices of a circulating pump of a supercritical unit, in particular to a cold water protection device of a circulating pump of a supercritical unit, which can be used for conveniently and fast switching a filter to ensure the filtering quality and efficiency of cold water, has higher economical efficiency and comprises a cold water protector; still including filtering the switching component, it includes the filter to filter the switching component, the inlet tube, two sets of outlet pipes, switch the cylinder, switch the case, multiunit filter screen and baffle, the downside at cold water protector is installed to the filter, the inside of filter is provided with switches chamber and filter chamber, the output of inlet tube and the bottom middle part intercommunication of switching chamber, the input of two sets of outlet pipes communicates with the left and right sides on filter chamber top respectively, the output of two sets of outlet pipes all communicates with cold water protector's input, the left and right sides on switch chamber top communicates with the left and right sides on filter chamber bottom respectively, switch the cylinder and install the right-hand member bottom at the filter.
Description
Technical Field
The utility model relates to the technical field of auxiliary devices of a supercritical unit circulating pump, in particular to a cold water protection device of a supercritical unit circulating pump with undisturbed switching in a dry state and a wet state.
Background
The energy production structure and the consumption structure of China show a great trend of converting to clean energy. The incremental power consumption mainly depends on new energy and renewable energy, and the coal motor unit is gradually changed from an electric power supply to an adjustable power supply. The coal-fired unit is used for excavating peak shaving potential, the operation flexibility of the coal-fired unit is improved, and the peak shaving capacity of the system is comprehensively improved, so that the coal-fired unit is a necessary condition for future survival of a coal-fired power plant. The design working condition of the boiler at the bottom end of the supercritical unit is 30% -100% BMCR, a circulating pump for starting is not arranged, and when the unit is started, the thermal working medium is almost discharged. When the unit is deeply regulated to be below 30% of the load working condition, the water-coal ratio must be readjusted, the combustion is increased, the water supply is reduced, and the higher superheat degree is ensured, so that the water breakthrough problem of the separator can be avoided. Under the low load working condition, the problem that the vertical pipe section of the water-cooled wall is overheated is extremely easy to occur under the condition of ensuring the higher overheat operation of the unit. In addition, the supercritical fluid bed super-critical unit is used in the factory, the superheat degree is difficult to adjust under the low-load working condition of the unit, and the wet state operation is quite necessary, so that the research on a dry-wet state undisturbed switching system under the deep peak regulation state of the super-critical unit is quite necessary. The unit is loaded above 30%, so that a certain degree of superheat is ensured, and the unit runs in a dry state. The superheat degree control can not be performed at about 30% load of the unit, and when the separator meets water, the water storage tank micro-regulating system is started first to regulate the water level. The water level of the water storage tank is ensured to run below the normal water level. When the water level is higher than the high water level, the circulating pump is started to perform high water level adjustment, and the opening of the adjusting valve of the micro-adjusting system is set to be 5%, so that the heating pipe function is realized. The whole process can be flexibly adjusted by combining a circulating pump recirculation system and a circulating system adjusting door. When the load is higher than 30%, the circulation pump is stopped. When the load is between 30 and 35 percent, the micro-control system can be operated in a micro-overheat state, and when the load is higher than 35 percent, the micro-control system is turned to a dry state to be operated, and the micro-control system is closed. The dry-wet state undisturbed switching of the unit can be realized by combining optimization of the water-coal ratio and enthalpy control logic, and the circulating pump cold water protection device is arranged for preventing and controlling the medium vaporization problem before the pump, so that the water supply can cause the pump inlet, and the circulating pump cold water protection device is widely used in the field of supercritical unit circulating pumps.
When the existing cold water protection device is used, stored water is guided out by using a pump set to be filtered with certain precision, so that the water quality is improved, then the stored water is pumped into the circulating pump cold water protection device, the medium before the pump is effectively cooled, and the vaporization problem of the medium is reduced to a certain extent.
In use, the existing cold water protection device finds that in order to ensure that the cold water protection device can efficiently transfer heat, high-precision filtration is needed before the cold water protection device is pumped, and long-time filtration of the cold water easily causes equipment impurities in a pipeline to be deposited on a filter screen, so that the filter screen is blocked, the available water quantity of the filter is reduced, the cooling effect of the cold water protection device is affected, the existing filter is generally provided with a standby filter, but because the cold water filtration requirement is higher, the occupied space of two groups of filters is very large, more valves are needed to assist in switching, the economical efficiency is poorer, and the efficient switching cannot be performed, so that the practicability is poorer.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the cold water protection device of the supercritical unit circulating pump, which can be used for conveniently and fast switching the filter, ensures the filtering quality and efficiency of cold water and has higher economical efficiency, thereby enhancing the practicability.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with undisturbed switching in a dry state and a wet state, which comprises a cold water protector;
still including filtering the switching component, filter the switching component and include the filter, the inlet tube, two sets of outlet pipes, switch the cylinder, switch the case, multiunit filter screen and baffle, the downside at cold water protector is installed to the filter, the inside of filter is provided with switches chamber and filter chamber, the output of inlet tube and the bottom middle part intercommunication of switching chamber, the input of two sets of outlet pipes communicates with the left and right sides on filter chamber top respectively, the output of two sets of outlet pipes all communicates with cold water protector's input, the left and right sides on switch chamber top communicates with the left and right sides on filter chamber bottom respectively, switch the cylinder and install in the right-hand member bottom of filter, switch case and switch chamber sliding connection, the right-hand member of switch the chamber is provided with the slide hole, the output of switch the cylinder passes the slide hole and is connected with the right-hand member of switch the case, multiunit filter screen is installed respectively in the left and right sides of filter chamber, the middle part at the filter chamber is installed to the baffle.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with dry-wet undisturbed switching, which also comprises a differential pressure alarm, wherein the differential pressure alarm is arranged at the left end of a filter, two groups of input ends of the differential pressure alarm are respectively communicated with an input end of a water inlet pipe and an input end of the cold water protector, and the differential pressure alarm is electrically connected with a control valve of a switching cylinder.
The utility model relates to a cold water protection device of a dry-wet undisturbed switching supercritical unit circulating pump, which further comprises two groups of sealing rings, wherein two groups of sealing grooves are arranged on the outer side of a switching valve core, and the sealing rings are arranged in the two groups of sealing grooves in a matching manner.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with dry-wet undisturbed switching, wherein a plurality of groups of equalizing grooves are uniformly arranged on the outer side of a switching valve core.
The utility model relates to a cold water protection device of a dry-wet undisturbed switching supercritical unit circulating pump, which also comprises two groups of one-way valves, wherein the two groups of one-way valves are respectively arranged at the input ends of two groups of water outlet pipes.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with undisturbed switching in a dry state and a wet state, which also comprises two groups of cleaning windows which are respectively arranged at the left end and the right end of a filter cavity.
The cold water protection device of the supercritical unit circulating pump with the undisturbed switching in the dry and wet state further comprises two groups of pressure relief electromagnetic valves, wherein the two groups of pressure relief electromagnetic valves are respectively arranged at the left end of the left cleaning window and the right end of the right cleaning window, and the input ends of the two groups of pressure relief electromagnetic valves are respectively communicated with the left end and the right end of the filter cavity.
The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching further comprises two groups of safety indicator lamps, wherein the two groups of safety indicator lamps are respectively arranged at the left end of the left cleaning window and the right end of the right cleaning window, and the two groups of safety indicator lamps are respectively electrically connected with the two groups of pressure relief electromagnetic valves.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with undisturbed switching in a dry state and a wet state, which also comprises a connecting flange, wherein the connecting flange is rotationally sleeved at the input end of a water inlet pipe.
The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching further comprises a sealing gasket, wherein the sealing gasket is arranged at the output end of the water inlet pipe.
Compared with the prior art, the utility model has the beneficial effects that: when the cold water protection device of the supercritical unit circulating pump with dry-wet undisturbed switching is used, external cold water is required to be led into the water inlet pipe, the cold water entering the water inlet pipe enters the left side of the filter cavity through the left side of the switching cavity, enters the water outlet pipe after being filtered by a plurality of groups of filter screens on the left side, and then enters the cold water protector to cool a medium before the pump; through the device, can be very convenient carry out high-efficient switching to the filter, ensure the filtration quality and the efficiency of cold water, and the economic nature is higher to the practicality has been strengthened.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic left-hand view of the present utility model;
FIG. 3 is a right side view of the present utility model;
FIG. 4 is a schematic diagram of a switching spool configuration of the present utility model;
FIG. 5 is a schematic view of the bottom construction of the inlet pipe of the present utility model;
the reference numerals in the drawings: 1. a cold water protector; 2. a filter; 3. a water inlet pipe; 4. a water outlet pipe; 5. switching the cylinder; 6. a switching valve core; 7. a filter screen; 8. a partition plate; 9. a switching cavity; 10. a filter chamber; 11. a differential pressure alarm; 12. a seal ring; 13. a pressure equalizing groove; 14. a one-way valve; 15. cleaning a window; 16. a pressure relief solenoid valve; 17. a safety indicator light; 18. a connecting flange; 19. and a sealing gasket.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 5, the cold water protection device of the dry-wet undisturbed switching supercritical unit circulating pump comprises a cold water protector 1;
the filter switching assembly comprises a filter 2, a water inlet pipe 3, two groups of water outlet pipes 4, a switching cylinder 5, a switching valve core 6, a plurality of groups of filter screens 7 and a partition plate 8, wherein the filter 2 is arranged on the lower side of the cold water protector 1, a switching cavity 9 and a filter cavity 10 are arranged in the filter 2, the output end of the water inlet pipe 3 is communicated with the middle part of the bottom end of the switching cavity 9, the input ends of the two groups of water outlet pipes 4 are respectively communicated with the left side and the right side of the top end of the filter cavity 10, the output ends of the two groups of water outlet pipes 4 are respectively communicated with the input ends of the cold water protector 1, the left side and the right side of the top end of the switching cavity 9 are respectively communicated with the left side and the right side of the bottom end of the filter cavity 10, the switching cylinder 5 is arranged at the bottom of the right end of the filter 2, the switching valve core 6 is in sliding connection with the switching cavity 9, the output end of the switching cylinder 5 passes through the sliding hole to be connected with the right end of the switching valve core 6, the plurality of groups of filter screens 7 are respectively arranged on the left side and right side of the filter cavity 10, and the partition plate 8 is arranged on the middle part of the filter cavity 10; when the cold water protection device of the supercritical unit circulating pump with dry-wet undisturbed switching is used, external cold water is required to be led into the water inlet pipe, the cold water entering the water inlet pipe enters the left side of the filter cavity through the left side of the switching cavity, enters the water outlet pipe after being filtered by a plurality of groups of filter screens on the left side, and then enters the cold water protector to cool a medium before the pump; through the device, can be very convenient carry out high-efficient switching to the filter, ensure the filtration quality and the efficiency of cold water, and the economic nature is higher to the practicality has been strengthened.
The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching also comprises a differential pressure alarm 11, wherein the differential pressure alarm 11 is arranged at the left end of the filter 2, two groups of input ends of the differential pressure alarm 11 are respectively communicated with the input ends of the water inlet pipe 3 and the cold water protector 1, and the differential pressure alarm 11 is electrically connected with a control valve of the switching cylinder 5; the pressure difference alarm can always monitor the pressure difference of the front pipeline and the rear pipeline of the filter, when the pressure difference reaches a set value, the pressure difference alarm can automatically alarm, and the output of the switching cylinder or the retraction of the switching cylinder is controlled to automatically switch the filter screen, so that the filtering effect of the filter is ensured, and the practicability is enhanced.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with dry-wet undisturbed switching, which further comprises two groups of sealing rings 12, wherein two groups of sealing grooves are arranged on the outer side of a switching valve core 6, and the sealing rings 12 are arranged in the two groups of sealing grooves in a matching way; the two groups of sealing rings can effectively improve the tightness of the left side and the right side of the switching valve core, so that the practicability is enhanced.
The utility model relates to a cold water protection device of a supercritical unit circulating pump for dry-wet undisturbed switching, wherein a plurality of groups of equalizing grooves 13 are uniformly arranged on the outer side of a switching valve core 6; the multiunit pressure equalizing groove can effectually balance the multidirectional resistance when switching the case slides, and can make the switching the case slide of being convenient for more through the lubricated effect of inslot cold water to the practicality has been strengthened.
The utility model relates to a cold water protection device of a dry-wet undisturbed switching supercritical unit circulating pump, which further comprises two groups of one-way valves 14, wherein the two groups of one-way valves 14 are respectively arranged at the input ends of two groups of water outlet pipes 4; the two groups of one-way valves can seal cold water of the water outlet pipe when the filter screen at one side does not filter, so that the blocked filter screen is more convenient to clean, and the practicability is enhanced.
The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching further comprises two groups of cleaning windows 15, wherein the two groups of cleaning windows 15 are respectively arranged at the left end and the right end of the filter cavity 10; the cleaning window can be more convenient to open the clearance and change the multiunit filter screen to the practicality has been strengthened.
The cold water protection device of the supercritical unit circulating pump with the dry-wet state undisturbed switching comprises two groups of pressure relief electromagnetic valves 16, wherein the two groups of pressure relief electromagnetic valves 16 are respectively arranged at the left end of a left cleaning window 15 and the right end of a right cleaning window 15, and the input ends of the two groups of pressure relief electromagnetic valves 16 are respectively communicated with the left end and the right end of a filter cavity 10; before the filter screen is cleaned, a small amount of cold water pressure in the filter cavity at the corresponding side can be released by opening the corresponding pressure relief electromagnetic valve, and then the cleaning window is opened to clean and replace the filter screen, so that the safety is improved, and the practicability is enhanced.
The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching further comprises two groups of safety indicator lamps 17, wherein the two groups of safety indicator lamps 17 are respectively arranged at the left end of the left cleaning window 15 and the right end of the right cleaning window 15, and the two groups of safety indicator lamps 17 are respectively electrically connected with the two groups of pressure relief electromagnetic valves 16; the two groups of safety indicator lamps can observe the normal work of the pressure relief electromagnetic valve more intuitively, and the corresponding safety indicator lamps can be controlled to be lightened after the pressure relief of the pressure relief electromagnetic valve on the corresponding side is finished, so that the practicability is enhanced.
The utility model relates to a cold water protection device of a supercritical unit circulating pump with dry-wet undisturbed switching, which further comprises a connecting flange 18, wherein the connecting flange 18 is rotationally sleeved at the input end of a water inlet pipe 3; the flange can be more convenient with the inlet tube with the pipeline carry out the alignment of bolt hole to the practicality has been strengthened.
The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching further comprises a sealing gasket 19, wherein the sealing gasket 19 is arranged at the output end of the water inlet pipe 3; the sealing gasket can omit the process of installing the sealing gasket when the water inlet pipe is connected, so that the connection efficiency is improved, and the practicability is enhanced.
When the cold water protection device of the supercritical unit circulating pump with the dry-wet state undisturbed switching is used, external cold water is required to be led into the water inlet pipe, the cold water entering the water inlet pipe enters the left side of the filter cavity through the left side of the switching cavity and enters the water outlet pipe after being filtered by the left side multiple groups of filter screens, so that a medium before the pump is cooled in the cold water protector, when the left side filter screens work for a long time to cause insufficient flow of the cold water protector, the pressure difference alarm detects a set pressure difference, the switching cylinder is operated to output and push the switching valve core to slide leftwards until the switching valve core seals a communication port at the left side of the switching cavity, water entering the right side of the filter cavity is filtered at the moment, and enters the cold water protector for cooling and heat exchange after being filtered, so that more convenient filter switching is realized, when the filter screens are cleaned and replaced, the pressure relief electromagnetic valve at the corresponding side can be opened first, a little pressure of the filter cavity at the corresponding side is leaked, and then the safety indicator lamp is cleaned after the filter screen is opened for cleaning and replacing.
The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
The terms "first," "second," and "third" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (10)
1. A cold water protection device of a supercritical unit circulating pump with undisturbed switching in a dry state and a wet state comprises a cold water protector (1);
the filter is characterized by further comprising a filter switching assembly, the filter switching assembly comprises a filter (2), a water inlet pipe (3), two groups of water outlet pipes (4), a switching cylinder (5), a switching valve core (6), a plurality of groups of filter screens (7) and a partition plate (8), the filter (2) is arranged at the lower side of the cold water protector (1), a switching cavity (9) and a filter cavity (10) are arranged in the filter (2), the output end of the water inlet pipe (3) is communicated with the middle part of the bottom of the switching cavity (9), the input ends of the two groups of water outlet pipes (4) are respectively communicated with the left side and the right side of the top of the filter cavity (10), the output ends of the two groups of water outlet pipes (4) are respectively communicated with the input ends of the cold water protector (1), the left side and the right side of the top of the switching cavity (9) are respectively communicated with the left side and the right side of the bottom of the filter cavity (10), the switching cylinder (5) is arranged at the bottom of the right side of the filter (2), the switching valve core (6) is slidably connected with the switching cavity (9), the right end of the switching cavity (9) is provided with a sliding hole, the output end of the switching cylinder (5) passes through the sliding hole, the sliding hole is connected with the right end of the switching cavity (6), and the filter screen (7) is connected with the right side of the left side of the filter cavity (6) and the left side of the filter cavity is connected with the left side of the filter cavity.
2. The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching according to claim 1, further comprising a differential pressure alarm (11), wherein the differential pressure alarm (11) is arranged at the left end of the filter (2), two groups of input ends of the differential pressure alarm (11) are respectively communicated with the input ends of the water inlet pipe (3) and the cold water protector (1), and the differential pressure alarm (11) is electrically connected with a control valve of the switching cylinder (5).
3. The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching according to claim 2, further comprising two groups of sealing rings (12), wherein two groups of sealing grooves are arranged on the outer side of the switching valve core (6), and the sealing rings (12) are installed in the two groups of sealing grooves in a matching manner.
4. The cold water protection device of the supercritical unit circulating pump for dry-wet undisturbed switching as claimed in claim 3, wherein a plurality of groups of equalizing grooves (13) are uniformly arranged on the outer side of the switching valve core (6).
5. The cold water protection device of the supercritical unit circulating pump with the dry-wet undisturbed switching as claimed in claim 4, further comprising two groups of one-way valves (14), wherein the two groups of one-way valves (14) are respectively arranged at the input ends of the two groups of water outlet pipes (4).
6. The cold water protection device of the supercritical unit circulating pump with the dry-wet undisturbed switching as claimed in claim 5, further comprising two groups of cleaning windows (15), wherein the two groups of cleaning windows (15) are respectively arranged at the left end and the right end of the filter cavity (10).
7. The cold water protection device of the supercritical unit circulating pump with the dry-wet state undisturbed switching according to claim 6, further comprising two groups of pressure relief electromagnetic valves (16), wherein the two groups of pressure relief electromagnetic valves (16) are respectively arranged at the left end of the left cleaning window (15) and the right end of the right cleaning window (15), and the input ends of the two groups of pressure relief electromagnetic valves (16) are respectively communicated with the left end and the right end of the filter cavity (10).
8. The cold water protection device of a supercritical unit circulating pump for dry-wet undisturbed switching as claimed in claim 7, further comprising two groups of safety indicator lamps (17), wherein the two groups of safety indicator lamps (17) are respectively arranged at the left end of the left cleaning window (15) and the right end of the right cleaning window (15), and the two groups of safety indicator lamps (17) are respectively electrically connected with the two groups of pressure relief electromagnetic valves (16).
9. The cold water protection device of the supercritical unit circulating pump with the dry-wet undisturbed switching as claimed in claim 8, further comprising a connecting flange (18), wherein the connecting flange (18) is rotatably sleeved at the input end of the water inlet pipe (3).
10. The cold water protection device of the supercritical unit circulating pump with the dry-wet undisturbed switching as claimed in claim 9, further comprising a sealing gasket (19), wherein the sealing gasket (19) is arranged at the output end of the water inlet pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320643759.6U CN219389690U (en) | 2023-03-28 | 2023-03-28 | Cold water protection device of supercritical unit circulating pump for dry-wet undisturbed switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320643759.6U CN219389690U (en) | 2023-03-28 | 2023-03-28 | Cold water protection device of supercritical unit circulating pump for dry-wet undisturbed switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219389690U true CN219389690U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320643759.6U Active CN219389690U (en) | 2023-03-28 | 2023-03-28 | Cold water protection device of supercritical unit circulating pump for dry-wet undisturbed switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219389690U (en) |
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2023
- 2023-03-28 CN CN202320643759.6U patent/CN219389690U/en active Active
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