CN104787912B - A kind of fresh water desalination plant - Google Patents
A kind of fresh water desalination plant Download PDFInfo
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- CN104787912B CN104787912B CN201510139097.9A CN201510139097A CN104787912B CN 104787912 B CN104787912 B CN 104787912B CN 201510139097 A CN201510139097 A CN 201510139097A CN 104787912 B CN104787912 B CN 104787912B
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- 239000013505 freshwater Substances 0.000 title claims abstract description 184
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 230000000903 blocking effect Effects 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000001223 reverse osmosis Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 241001131796 Botaurus stellaris Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Abstract
The present invention relates to a kind of fresh water desalination plant, the feed-water end of the water inlet pipe of pump is provided with anti-salt crust blocking device, in order to filter the liquid flowing into water inlet pipe; Described water inlet pipe is provided with fresh water desalination plant, and it, when pump produces salt crust, injects the fresh water of preset flow in trend pump chamber; Described fresh water desalination plant comprises interior pipe, outer tube, the first pipe connecting and the second pipe connecting, and described outer tube is provided with fresh water control unit, is also provided with fresh water flow structure in the lower end of the segmental arc of described outer tube; The first described pipe connecting upper end is provided with annular recesses alternately and flange, in order to be connected with described inner and outer tubes.
Description
Technical field
The present invention relates to fresh water desalination field, particularly relating to a kind of fresh water desalination plant by setting up inner and outer pipes.
Background technology
When salt crust material medium is easily tied in water pump self-suction conveying; pump is in normal operation or stopping process; in for some time, material can form a large amount of salt crust in pump chamber fluid reservoir; thus blocking fluid reservoir space; affect the unobstructed of pump inlet runner and operating power increase motor load; long time running has a strong impact on pump work-ing life, increases maintenance cost.Therefore common vertical self-sucking pump is difficult to when Bittern of Salt Pan is carried guarantee that high-level efficiency is normally run.
In existing desalination technology, the general mode by infiltration, as Chinese patent " a kind of tap water desalination plant " discloses the desalination plant be made up of multilayer water tank, this kind of device by arranging resin material on water tank, complete dialysis procedure, but this kind of desalination is only applicable to hydrostatic desalination, the desalination being applicable to pump is required to meet.
In view of above-mentioned defect, creator of the present invention obtains this creation finally through long research and practice.
Summary of the invention
The object of the present invention is to provide a kind of fresh water desalination plant, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the invention provides a kind of fresh water desalination plant, the output shaft of motor is connected with pump shaft, is provided with pump chamber in the pump housing, and the two ends of pump are connected to rising pipe and water inlet pipe, it is characterized in that,
The feed-water end of water inlet pipe is provided with anti-salt crust blocking device, in order to filter the liquid flowing into water inlet pipe;
Described water inlet pipe is provided with fresh water desalination plant, and it, when pump produces salt crust, injects the fresh water of preset flow in trend pump chamber; Described fresh water desalination plant comprises interior pipe, outer tube, the first pipe connecting and the second pipe connecting, wherein,
Described interior pipe is arranged in outer tube, and, be provided with between interior pipe and outer tube and store and the fresh water chamber of flowing for fresh water; Described interior pipe is connected with the first pipe connecting with the lower end of outer tube, and upper end is connected with the second pipe connecting, and the first pipe connecting and the second pipe connecting seal fresh water chamber respectively;
Described outer tube is provided with fresh water control unit, it comprises the first boss, first boss is arranged on the segmental arc upper end of outer tube, and itself and outer tube are one-body molded, are connected with electric air valve in the first boss upper end, when needs carry out freshwater input, electric air valve events, fresh water enters in fresh water chamber through feed-water end, when the fresh water pressure in fresh water chamber reaches certain value, in fresh water flows in pipe, enter in pump chamber through interior pipe, the first pipe connecting and bend pipe;
Also be provided with the second boss in the lower end of the segmental arc of described outer tube, the second boss is provided with fresh water flow structure, it comprises fresh water flow pass, and fresh water flow pass is provided with pressure valve;
In described pipe outer wall on be provided with the first water-in and the second water-in;
The first described pipe connecting upper end is provided with annular recesses alternately and flange, in order to be connected with described inner and outer tubes;
The end of described rising pipe is provided with a flow sensor, in order to detect pump duty V, and will detect real-time data transmission in control unit, in order to judge the salt crust degree of pump chamber; Fresh water water-in is provided with a fresh-water flow sensor, and it detects the flow N that fresh water is filled in real time, and transfers in control unit; The exit end of described freshet circulation passage is provided with pressure transmitter, in order to detect the pressure P of freshet circulation passage, and transfers in control unit; Control unit detects above-mentioned information, and by the electric air valve that is connected with its output terminal and pressure valve, the flow of adjustment fresh water;
Described control unit regulates the inlet of fresh water and the pressure in fresh water chamber according to the pump duty V gathered; Specifically see following formula;
Work as V
1< V < V
0time, salt crust degree is comparatively light, and now, the amount of entering of fresh water is less, the fresh water pressure P < P entered in fresh water chamber
0, fresh water only in the pore that the second water-in enters interior pipe, the constant N=N of fresh-water flow of setting
0; P
0with N
0, V
1with V
0the dielectric value transmitted according to pump of numerical value determine;
As V < V
1time, now, salt crust degree is heavier, and the amount of entering of fresh water is comparatively large, the fresh water pressure P entered in fresh water chamber
0< P < P
1, fresh water enters in the pore of interior pipe through the first water-in and the second water-in simultaneously, the constant N=N of fresh-water flow of setting
1; P
0with N
1, V
1the dielectric value transmitted according to pump of numerical value determine; Wherein, P
1for the oil pressure relief of pressure valve, the transmission performance according to pump presets.
Further, the lower end of described electric air valve is fresh water water-in, and fresh water water-in is opened in the upper surface of the first boss, and the inside of the first boss is provided with vertical water entry, and the end of water entry is intake antrum, and intake antrum is communicated with fresh water chamber.
Further, offer fresh water transition passage in the left side of described intake antrum, fresh water transition passage is provided with blocking; Fresh water flows in intake antrum and fresh water transition passage through water entry, and then flows in fresh water chamber.
Further, the first water-in and the second water-in are all arranged on the segmental arc of interior pipe, and the position of two water-ins is between intake antrum and fresh water flow pass; The height of the first described water-in is higher than the height of the second water-in, and along with the liquid level in fresh water chamber constantly raises, two water-ins successively realize water inlet and water outlet.
Further, the upper end of the first described pipe connecting from outer in be disposed with outward flange, outer groove, intermediate flange, inner groovy and inward flange, the outer tube wall of described outer tube is arranged in described outer groove, the outer tube wall of the outward flange of both sides and intermediate flange clamping outer tube; The outer tube wall of described interior pipe is arranged in inner groovy, the inner tubal wall of the intermediate flange of both sides and the interior pipe of inward flange clamping;
The bottom in described fresh water chamber is closed by intermediate flange.
Further, the first described pipe connecting comprises and connects hole and lower even hole, and holes communicates up and down, and the upper hole that connects communicates with the endoporus of interior pipe, and the upper diameter connecting hole is greater than the lower diameter connecting hole;
The lower surface of the first described pipe connecting is provided with bend pipe connecting groove, and both sides flange connector, the outer tube wall of described bend pipe is arranged in connecting groove, the bend pipe described in flange connector clamping of both sides.
Further, take the mode at interval to carry out when described each sensor gathers data, to signal waveform, within every continuous print K cycle, each cycle selects the sampling point of n predetermined time, at interval of time T
0sampling should be carried out, serial sampling M time; The timed interval Δ t of n the sampling point selected within each cycle calculates according to the following equation,
In formula, Δ t represents the timed interval of sampling point, t is the data message of previous moment, detected by corresponding sensor and obtain, the radian frequency of ω expression signal, being determined by the performance of each sensor, β is initial phase angle, the time in T expression signal cycle, h represents current sensor values, is obtained by sensor.
Further, described anti-salt crust blocking device, is connected with bend pipe in water inlet pipe and anti-salt crust blocking device, and anti-salt crust blocking device is arranged on the straight-run of pipe that is connected with bend pipe.
Further, described anti-salt crust blocking device, it comprises filter paper layer, reverse osmosis membrane and filter screen, wherein, filter screen is arranged on anti-salt crust blocking device bottom, the large granular impurity in its filtering liquid, be provided with filter paper layer topmost, fine filtering is carried out to liquid;
Also be provided with concentrated water discharge pipe on the right side of anti-salt crust blocking device, the inside of concentrated water discharge Guan Yufang salt crust blocking device is provided with reverse osmosis membrane.
Further, the output shaft of described motor is connected with pump shaft by shaft coupling, pump shaft is provided with accessory impeller and impeller from top to bottom, impeller is provided with spiral case, and described accessory impeller and impeller are all arranged in the internal space of pump.
Compared with prior art beneficial effect of the present invention is: fresh water desalination plant of the present invention, when pump chamber produces salt crust phenomenon, pump is without the need to shutting down under normal operation, and the fresh water desalination plant be arranged on water inlet pipe enters a certain amount of fresh water in trend pump chamber; The present invention arranges fresh water cavity configuration and corresponding Controlling System, can either ensure to prevent and solve salt crust problem, can improve again the stable of system, be reduced to minimum by the impact of system, extension device work-ing life; Do not affect media variations, realize the smooth self-priming conveying of vacuum primingpump to material.
Accompanying drawing explanation
Fig. 1 be vacuum primingpump of the present invention enter discharge structure schematic diagram;
Fig. 2 is the structural representation of anti-salt crust blocking device of the present invention;
Fig. 3 is the structural representation of fresh water desalination plant of the present invention;
Fig. 4 is the positive view of the first pipe connecting of the present invention;
Fig. 5 is the vertical view cutaway drawing of the first pipe connecting of the present invention;
Fig. 6 is the functional block diagram of Controlling System of the present invention.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
Refer to shown in Fig. 1, what it was vacuum primingpump of the present invention enters discharge structure schematic diagram, and the discharge structure that enters of vacuum primingpump of the present invention comprises drive part, desalination plant, preventing clogging up device and corresponding control section.In embodiments of the present invention, drive part comprises motor 1, and motor 1 is arranged on motor cabinet 14, and in the present embodiment, motor is vertically placed.Motor output shaft is connected with pump shaft 12 by shaft coupling 13, pump shaft 12 is provided with accessory impeller 11 and impeller 17 from top to bottom, impeller 17 is provided with spiral case 18, and above-mentioned accessory impeller 11 and impeller 17 are all arranged in the internal space of barrel 16.
Be rising pipe 15 in the left upper part be connected with barrel 16, right-hand member bottom is connected with water inlet pipe 2, and fluid, from the inner chamber of described water inlet pipe 2 inflow pump, at the impeller 17 of pump with under the stirring action of spiral case 18, is discharged from rising pipe 15.
In order to ensure to enter pump chamber liquid in there is less impurity, feed-water end is provided with anti-salt crust blocking device 62, in water inlet pipe 2 with anti-salt crust blocking device 62, is connected with bend pipe 6, anti-salt crust blocking device 62 is arranged on the straight-run of pipe that is connected with bend pipe 6.Shown in Fig. 2, it comprises filter paper layer 63, reverse osmosis membrane 64 and filter screen 65, wherein, filter screen 65 is arranged on anti-salt crust blocking device 62 bottom, large granular impurity in its filtering liquid, is provided with filter paper layer 63 topmost, carries out fine filtering to liquid, prevent the impurity such as mineral substance from entering, avoid the obstruction of pump.Also be provided with concentrated water discharge pipe 61 on the right side of anti-salt crust blocking device, concentrated water discharge pipe 61 and the inside of anti-salt crust blocking device 62 are provided with reverse osmosis membrane 64, prevent the concentrated stream flowed out from concentrated water discharge pipe 61 from returning.
After filtering liquid, liquid enters water inlet pipe 2 from bend pipe 6, and enters in pump.
In embodiments of the present invention, when pump chamber produces salt crust phenomenon, pump is without the need to shutting down under normal operation, and the fresh water desalination plant be arranged on water inlet pipe 2 enters a certain amount of fresh water in trend pump chamber, carries material self-priming to make vacuum primingpump.
Refer to shown in Fig. 3, it is the structural representation of fresh water desalination plant of the present invention, fresh water desalination plant in the present embodiment comprises interior pipe 26, outer tube 22, first pipe connecting 3 and the second pipe connecting 4, wherein, interior pipe 26 is arranged in outer tube 22, further, between interior pipe 26 and outer tube 22, be provided with confession fresh water store and the fresh water chamber 23 of flowing; Interior pipe 26 is connected with the first pipe connecting 3 with the lower end of outer tube 22, and upper end is connected with the second pipe connecting 4; First pipe connecting 3 is connected with bend pipe 6 at two ends respectively with the second pipe connecting 4, and the coupling end of bend pipe 6 and the first pipe connecting 3 and the second pipe connecting 4 is straight-line segment.The embodiment of the present invention arranges the nesting structure of interior pipe and outer tube, makes full use of the internal space of water inlet pipe on the one hand, on the other hand, when carrying out fresh water and filling, can enter in pump chamber fast, and automatically can carry out fresh water filling.
The feed-water end of fresh water is provided with electric air valve 5, when needs carry out freshwater input, electric air valve 5 action, fresh water enters in fresh water chamber 23 through feed-water end, when fresh water pressure in fresh water chamber 23 reaches certain value, in fresh water flows in pipe 26, enter in pump chamber through interior pipe 26, first pipe connecting 3 and bend pipe 6.In the present embodiment, freshet shares same inlet channel through passage and liquid stream through passage, enormously simplify the structure of the pump housing.
Outer tube 22 is provided with fresh water control unit, it comprises the first boss 21, first boss is arranged on the segmental arc upper end of outer tube 22, itself and outer tube 22 are one-body molded, described electric air valve 72 is connected with in the first boss 21 upper end, the lower end of electric air valve 72 is fresh water water-in, fresh water water-in is opened in the upper surface of the first boss 21, the inside of the first boss 21 is provided with vertical water entry 211, the end of water entry 211 is intake antrum 214, and intake antrum 214 is communicated with fresh water chamber 23.Offer fresh water transition passage 212 in the left side of intake antrum 214, fresh water transition passage 212 is provided with blocking 213.Fresh water flows in intake antrum 214 and fresh water transition passage 212 through water entry 211, and then flows in fresh water chamber 23.In the present embodiment, the first boss is set, is not only convenient to fresh water control unit is installed, and, in it, product water channel is set, is convenient to fresh water and enters under controllable condition in fresh water chamber; Fresh water transition passage and intake antrum are set, are not only convenient to fresh water buffering, convenient control, and, make the processing of water entry convenient.
The second boss 24 is also provided with in the lower end of the segmental arc of described outer tube 22, second boss 24 is provided with fresh water flow structure, it comprises fresh water flow pass 242, fresh water flow pass 242 is provided with pressure valve 241, pressure valve 241 is set with certain pressure, when the pressure in fresh water chamber 23 exceedes preset value, pressure valve is opened, overflow.In the present embodiment, fresh water flow structure is set in outer tube lower end, is convenient to control fresh water add-on; Prevent fresh water pressure excessive, web member and outer tube are impacted.
In described pipe 26 outer wall 25 on be provided with the first water-in 251 and the second water-in 252, in the present embodiment, first water-in 251 and the second water-in 252 are all arranged on the segmental arc of interior pipe 26, and, the position of two water-ins is between intake antrum 214 and fresh water flow pass 242, there is enough pressure when fresh water enters interior pipe 26, avoid flow rate of liquid at a high speed to cause fresh water to reflux, affect filling effect.Because the height of two water-ins is different, when intaking and stop supplying water, along with the liquid level in fresh water chamber 23 constantly raises, two water-ins successively realize water inlet and water outlet, increase gradually or reduce flow velocity, being convenient to Systematical control.
In the present embodiment, the top and bottom in fresh water chamber 23 are closed, and the first pipe connecting 3 and the second pipe connecting 4 seal fresh water chamber respectively.
Refer to shown in Figure 4 and 5, it is the structural representation of the first pipe connecting of the present invention, and in the present invention, the first described pipe connecting is identical with the second pipe connecting, casting.
The first described pipe connecting 3 comprises and connects hole 31 and lower even hole 32, and holes communicates up and down, and the upper hole 31 that connects communicates with the endoporus of interior pipe 26, and the upper diameter connecting hole 31 is greater than the lower diameter connecting hole 32.The upper end of the first pipe connecting 3 is provided with annular recesses alternately and flange, from outer in be disposed with outward flange 36, outer groove 35, intermediate flange 34, inner groovy 33 and inward flange 32, the inner side of inward flange 32 is described above connect hole 31.Above-mentioned annular recesses is connected with described interior pipe 26 and outer tube 22 with flange.
Shown in Fig. 3, the outer tube wall of described outer tube 22 is arranged in described outer groove 35, and the outward flange 36 of both sides and intermediate flange 34 clamp the outer tube wall of outer tube 22; The outer tube wall 25 of described interior pipe 26 is arranged in inner groovy 33.The intermediate flange 24 of both sides and inward flange 32 clamp the inner tubal wall 25 of interior pipe 26.After installation, the bottom in fresh water chamber 23 is closed by intermediate flange 34.The present embodiment arranges the structure that groove connects with flange, not only easy for installation, and, stable connection, good seal performance.Sealing-ring can also be arranged at the first pipe connecting 3 with the coupling end of inner and outer pipes to seal, improve sealing effectiveness.
The lower surface of the first described pipe connecting 3 is provided with bend pipe connecting groove 37, and both sides flange connector 38.Identical with above-mentioned syndeton, the outer tube wall of described bend pipe 6 is arranged in connecting groove 37, and the flange connector 38 of both sides clamps described bend pipe 6.
When pump chamber produces salt crust phenomenon, pump is without the need to shutting down under normal operation, and electric air valve 5 action described in Controlling System controls, fresh water enters fresh water chamber 23 and pump chamber.In the present embodiment, the end of the rising pipe 15 of pump chamber is provided with a flow sensor 71, in order to detect pump duty V, and will detect real-time data transmission in control unit 7, in order to judge the salt crust degree of pump chamber; Fresh water water-in is provided with a fresh-water flow sensor 72, and it detects the flow N that fresh water is filled in real time, and transfers in control unit 7; The exit end of described fresh water flow pass 242 is provided with pressure transmitter 73, in order to detect the pressure P of freshet circulation passage, and transfers in control unit 7; Control unit 7 detects above-mentioned information, and by the electric air valve 5 that is connected with its output terminal and pressure valve 241, the flow of adjustment fresh water.
In the present invention, in order to save program resource, simplified operation data, take the mode at interval to carry out when each sensor gathers data, and to signal waveform, within every continuous print K cycle, each cycle selects the sampling point of n predetermined time, at interval of time T
0sampling should be carried out, serial sampling M time; Timed interval Δ t (1) calculating according to the following equation of n the sampling point selected within each cycle,
In formula, Δ t represents the timed interval of sampling point, t is the data message of previous moment, detected by corresponding sensor and obtain, the radian frequency of ω expression signal, being determined by the performance of each sensor, β is initial phase angle, the time in T expression signal cycle, h represents current sensor values, is obtained by sensor.
Through above-mentioned formula (1) sampling, larger at signal amplitude, flow or pressure larger, the frequency of sampling is higher; Such one side can reduce at a high speed or graceful environment on the impact of Signal transmissions, the complexity of follow-up signal process can be reduced simultaneously.
The default threshold value V of pump duty V and standard that described control unit 7 will gather
0compare, as V < V
0time, then assert and now produce salt crust problem, need to fill fresh water.Described control unit controls electric air valve 5 and pressure valve 241 action.
Control unit 7 is controlled by rly. group, and, regulate the inlet of fresh water and the pressure in fresh water chamber 23 according to the pump duty V gathered; Specifically see formula (2);
Work as V
1< V < V
0time, salt crust degree is comparatively light, and now, the amount of entering of fresh water is less, the fresh water pressure P < P entered in fresh water chamber 23
0, fresh water only in the pore that the second water-in 252 enters interior pipe 26, the constant N=N of fresh-water flow of setting
0; P
0with N
0, V
1with V
0the dielectric value transmitted according to pump of numerical value determine;
As V < V
1time, now, salt crust degree is heavier, and the amount of entering of fresh water is comparatively large, the fresh water pressure P entered in fresh water chamber 23
0< P < P
1, fresh water enters in the pore of interior pipe 26 through the first water-in 251 and the second water-in 252 simultaneously, the constant N=N of fresh-water flow of setting
1; P
0with N
1, V
1the dielectric value transmitted according to pump of numerical value determine; Wherein, P
1for the oil pressure relief of pressure valve, the transmission performance according to pump presets; When the force value in fresh water chamber 23 is more than P
1time, pressure valve overflow, ensures the stability of system.
Further, the fresh water that the amount of entering of fresh water adds in the present invention is less than 5% of pump fluid transfer medium, while not affecting media variations, has both ensured that bittern was unsaturated and effectively prevent and solution finishes salt problem, eliminates the blocking that medium causes because of salt crust
In embodiments of the present invention, fresh-water flow and pressure-controlling control in different threshold ranges according to the difference of the salt crust degree of pump, salt crust mild degree, then fresh-water flow is little, and the integral pressure of fresh water chamber and system is little; Salt crust degree weight, then fresh-water flow is large, and the integral pressure of fresh water chamber and system is large, can either ensure to prevent and solve salt crust problem, can improve again the stable of system, be reduced to minimum by the impact of system, extension device work-ing life; Do not affect media variations, realize the smooth self-priming conveying of vacuum primingpump to material.
Above-mentioned detailed description is illustrating for one of them possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of technical solution of the present invention.
Claims (10)
1. a fresh water desalination plant, it comprises motor, and the output shaft of motor is connected with pump shaft, is provided with pump chamber in the pump housing, and the two ends of pump are connected to rising pipe and water inlet pipe, it is characterized in that,
The feed-water end of water inlet pipe is provided with anti-salt crust blocking device, in order to filter the liquid flowing into water inlet pipe;
Described water inlet pipe is provided with fresh water desalination plant, and it, when pump produces salt crust, injects the fresh water of preset flow in trend pump chamber; Described fresh water desalination plant comprises interior pipe, outer tube, the first pipe connecting and the second pipe connecting, wherein,
Described interior pipe is arranged in outer tube, and, be provided with between interior pipe and outer tube and store and the fresh water chamber of flowing for fresh water; Described interior pipe is connected with the first pipe connecting with the lower end of outer tube, and upper end is connected with the second pipe connecting, and the first pipe connecting and the second pipe connecting seal fresh water chamber respectively;
Described outer tube is provided with fresh water control unit, it comprises the first boss, first boss is arranged on the segmental arc upper end of outer tube, and itself and outer tube are one-body molded, are connected with electric air valve in the first boss upper end, when needs carry out freshwater input, electric air valve events, fresh water enters in fresh water chamber through feed-water end, when the fresh water pressure in fresh water chamber reaches certain value, in fresh water flows in pipe, enter in pump chamber through interior pipe, the first pipe connecting and bend pipe;
Also be provided with the second boss in the lower end of the segmental arc of described outer tube, the second boss is provided with fresh water flow structure, it comprises fresh water flow pass, and fresh water flow pass is provided with pressure valve;
In described pipe outer wall on be provided with the first water-in and the second water-in;
The first described pipe connecting upper end is provided with annular recesses alternately and flange, in order to be connected with described inner and outer tubes;
The end of described rising pipe is provided with a flow sensor, in order to detect pump duty V, and will detect real-time data transmission in control unit, in order to judge the salt crust degree of pump chamber; Fresh water water-in is provided with a fresh-water flow sensor, and it detects the flow N that fresh water is filled in real time, and transfers in control unit; The exit end of described freshet circulation passage is provided with pressure transmitter, in order to detect the pressure P of freshet circulation passage, and transfers in control unit; Control unit detects above-mentioned information, and by the electric air valve that is connected with its output terminal and pressure valve, the flow of adjustment fresh water;
Described control unit regulates the inlet of fresh water and the pressure in fresh water chamber according to the pump duty V gathered; Specifically see following formula;
Work as V
1< V < V
0time, salt crust degree is comparatively light, and now, the amount of entering of fresh water is less, the fresh water pressure P < P entered in fresh water chamber
0, fresh water only in the pore that the second water-in enters interior pipe, the constant N=N of fresh-water flow of setting
0; P
0with N
0, V
1with V
0the dielectric value transmitted according to pump of numerical value determine;
As V < V
1time, now, salt crust degree is heavier, and the amount of entering of fresh water is comparatively large, the fresh water pressure P entered in fresh water chamber
0< P < P
1, fresh water enters in the pore of interior pipe through the first water-in and the second water-in simultaneously, the constant N=N of fresh-water flow of setting
1; P
0with N
1, V
1the dielectric value transmitted according to pump of numerical value determine; Wherein, P
1for the oil pressure relief of pressure valve, the transmission performance according to pump presets.
2. fresh water desalination plant according to claim 1, it is characterized in that, the lower end of described electric air valve is fresh water water-in, fresh water water-in is opened in the upper surface of the first boss, the inside of the first boss is provided with vertical water entry, the end of water entry is intake antrum, and intake antrum is communicated with fresh water chamber.
3. fresh water desalination plant according to claim 2, is characterized in that, offers fresh water transition passage in the left side of described intake antrum, and fresh water transition passage is provided with blocking; Fresh water flows in intake antrum and fresh water transition passage through water entry, and then flows in fresh water chamber.
4. fresh water desalination plant according to claim 2, is characterized in that, the first water-in and the second water-in are all arranged on the segmental arc of interior pipe, and the position of two water-ins is between intake antrum and fresh water flow pass; The height of the first described water-in is higher than the height of the second water-in, and along with the liquid level in fresh water chamber constantly raises, two water-ins successively realize water inlet and water outlet.
5. fresh water desalination plant according to claim 1, it is characterized in that, the upper end of the first described pipe connecting from outer in be disposed with outward flange, outer groove, intermediate flange, inner groovy and inward flange, the outer tube wall of described outer tube is arranged in described outer groove, the outer tube wall of the outward flange of both sides and intermediate flange clamping outer tube; The outer tube wall of described interior pipe is arranged in inner groovy, the inner tubal wall of the intermediate flange of both sides and the interior pipe of inward flange clamping;
The bottom in described fresh water chamber is closed by intermediate flange.
6. fresh water desalination plant according to claim 5, is characterized in that, the first described pipe connecting comprises and connects hole and lower even hole, and holes communicates up and down, and the upper hole that connects communicates with the endoporus of interior pipe, and the upper diameter connecting hole is greater than the lower diameter connecting hole;
The lower surface of the first described pipe connecting is provided with bend pipe connecting groove, and both sides flange connector, the outer tube wall of described bend pipe is arranged in connecting groove, the bend pipe described in flange connector clamping of both sides.
7. fresh water desalination plant according to claim 1 and 2, is characterized in that, takes the mode at interval to carry out when described each sensor gathers data, to signal waveform, within every continuous print K cycle, each cycle selects the sampling point of n predetermined time, at interval of time T
0sampling should be carried out, serial sampling M time; The timed interval Δ t of n the sampling point selected within each cycle calculates according to the following equation,
In formula, Δ t represents the timed interval of sampling point, t is the data message of previous moment, detected by corresponding sensor and obtain, the radian frequency of ω expression signal, being determined by the performance of each sensor, β is initial phase angle, the time in T expression signal cycle, h represents current sensor values, is obtained by sensor.
8. fresh water desalination plant according to claim 1 and 2, is characterized in that, described anti-salt crust blocking device, in water inlet pipe and anti-salt crust blocking device, be connected with bend pipe, and anti-salt crust blocking device is arranged on the straight-run of pipe that is connected with bend pipe.
9. fresh water desalination plant according to claim 8, it is characterized in that, described anti-salt crust blocking device, it comprises filter paper layer, reverse osmosis membrane and filter screen, wherein, filter screen is arranged on anti-salt crust blocking device bottom, the large granular impurity in its filtering liquid, be provided with filter paper layer topmost, fine filtering is carried out to liquid;
Also be provided with concentrated water discharge pipe on the right side of anti-salt crust blocking device, the inside of concentrated water discharge Guan Yufang salt crust blocking device is provided with reverse osmosis membrane.
10. fresh water desalination plant according to claim 1 and 2, it is characterized in that, the output shaft of described motor is connected with pump shaft by shaft coupling, pump shaft is provided with accessory impeller and impeller from top to bottom, impeller is provided with spiral case, and described accessory impeller and impeller are all arranged in the internal space of pump.
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Denomination of invention: Fresh water desalting device Effective date of registration: 20191107 Granted publication date: 20160106 Pledgee: Jingjiang Branch of Bank of China Limited Pledgor: Jiangsu Chuan Jin pump valve Manufacturing Co., Ltd Registration number: Y2019320000270 |
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Date of cancellation: 20220310 Granted publication date: 20160106 Pledgee: Jingjiang Branch of Bank of China Ltd. Pledgor: JIANGSU CHUANGJIN PUMP VALVE MANUFACTURING CO.,LTD. Registration number: Y2019320000270 |