CN214360400U - Alkali ejector - Google Patents
Alkali ejector Download PDFInfo
- Publication number
- CN214360400U CN214360400U CN202023135300.0U CN202023135300U CN214360400U CN 214360400 U CN214360400 U CN 214360400U CN 202023135300 U CN202023135300 U CN 202023135300U CN 214360400 U CN214360400 U CN 214360400U
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- China
- Prior art keywords
- pipe
- nozzle
- throat
- shell
- expansion
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- 239000003513 alkali Substances 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000008929 regeneration Effects 0.000 description 13
- 238000011069 regeneration method Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 11
- 239000012530 fluid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Abstract
The utility model discloses an alkali sprayer, include: the device comprises a shell, a nozzle, a throat pipe, an expansion pipe and a liquid inlet pipe; the shell is a cylindrical pipe body with two open ends; the nozzle, the throat pipe and the expansion pipe are sequentially arranged in the shell; a gap is reserved between the outlet end of the nozzle and one end of the throat pipe, and the other end of the throat pipe is connected with one end of the expansion pipe; the lower end of the liquid inlet pipe is vertically connected with the side wall of the shell and is close to the inlet end of the nozzle. The utility model discloses optimize inner structure, solved the corruption of alkali sprayer in the operation and the not enough problem of suction, practiced thrift the cost.
Description
Technical Field
The utility model belongs to the mechanical equipment field, concretely relates to alkali sprayer.
Background
The jet pump is a fluid-dynamic pump. The fluid power pump has no mechanical transmission and mechanical working components, and the fluid power pump uses the energy of another working fluid as a power source to convey low-energy liquid, so that the fluid power pump has good safety when being used for pumping inflammable and explosive materials. It has been widely used in vacuum, refrigeration, evaporation, pure water production and other production. Because the diameter of the fluid in motion is reduced and accelerated, a higher vacuum degree can be formed, the two liquids are mixed in a parallel flow mode, the contact area is larger, and the mixing is more sufficient.
The alkali ejector is an alkali liquor concentration adjusting device of a resin regeneration system in the process of preparing desalted water of a power plant, and uniformly mixes regenerated desalted water and industrial alkali liquor by utilizing the principle of an injection pump so that the concentration of mixed liquor meets the requirement of regenerated resin.
In the process of preparing boiler demineralized water, after a resin exchanger fails to operate, the demineralized water with alkali concentration of 2.2-2.6% is used for regenerating anion exchange resin. The concentration of the liquid caustic soda sold in the market is 32%, and the liquid caustic soda needs to be diluted during normal use, wherein the liquid caustic soda and the prepared desalted water are uniformly mixed by a glass steel ejector, and the concentration of the regeneration liquid is adjusted by controlling a suction port valve of the ejector. In the long-term operation process, the glass steel ejector is easily corroded by alkali liquor, so that a nozzle is enlarged, the suction force of a chamber is reduced, and the concentration of a regeneration liquid cannot be adjusted; in the regeneration process, the liquid flow speed is accelerated and then rapidly expanded due to the nozzle, the ejector is slightly vibrated due to the change of the pressure difference of each part, and after the running time is prolonged, the ejector is corroded and vibrated, so that cracks are easily generated at different parts, and the ejector cannot be normally used due to leakage. Under the statistics of long-term operation and maintenance, the alkali ejector needs to be replaced once in 6 months on average, and certain burdens are imposed on operation, maintenance personnel, safety and production saving.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides an alkali ejector which is convenient to replace and has good mixing effect.
The utility model discloses a realize through following technical scheme.
An alkali injector, characterized in that the injector comprises: the device comprises a shell (1), a nozzle (2), a throat pipe (3), an expansion pipe (4) and a liquid inlet pipe (5); the shell (1) is a cylindrical pipe body with two open ends; the nozzle (2), the throat pipe (3) and the expansion pipe (4) are sequentially arranged in the shell; a gap is reserved between the outlet end of the nozzle (2) and one end of the throat pipe (3), and the other end of the throat pipe (3) is connected with one end of the expansion pipe (4); the lower end of the liquid inlet pipe (5) is vertically connected with the side wall of the shell (1) and is close to the inlet end of the nozzle (2).
Further, both ends of the shell (1) are provided with flanges.
Further, the nozzle (2) is a hollow conical cylinder, the large opening end of the conical cylinder is an inlet end, and the large opening end of the conical cylinder is connected with one end of the shell (1) through a first flange (10).
Furthermore, the throat pipe (3) is a cylindrical pipe body with a horn-shaped pipe orifice at one end.
Furthermore, the expansion pipe (4) comprises a reducer pipe (6) and a circular connecting plate (7) connected with the small opening end of the reducer pipe (6), a circular through hole is formed in the circular connecting plate (7), the reducer pipe (6) is communicated with the circular through hole of the circular connecting plate (7), and the circular connecting plate (7) is connected with the other end of the throat pipe (3) through a bolt (9).
Further, the liquid inlet pipe (5) is a vertical pipe, and a second flange (8) is arranged at the upper end of the vertical pipe.
Furthermore, the shell (1) is made of stainless steel, the nozzle (2) is made of steel, the throat pipe (3) is made of nylon plastic, and the expansion pipe (4) is made of steel.
The utility model has the advantages of:
(1) adopt the utility model discloses, the scene sprayer leaks the condition and obtains fully solving, and the operation does not have obvious vibrations phenomenon, and equipment is alkali-resistant and mechanical strength reinforcing. In the regeneration process of the resin, the alkali absorption capacity of the ejector is also well improved, and the flow rate of the alkali liquor can reach 4.8m3H can satisfyThe resin regeneration system is used, the mixing effect of the alkali liquor and the demineralized water is good, the resin regeneration efficiency is improved to a certain extent, each index of the regenerated ion exchanger is stable, and the operation period is prolonged by 1 day.
(2) The utility model transforms the prior injector made of glass fiber reinforced plastic material into stainless steel material, optimizes the internal structure (the structure that the nozzle, the choke, the expansion pipe and each part are arranged in the shell in sequence), solves the problems of corrosion and insufficient suction in the operation process of the alkali injector, and prolongs the service life of the alkali injector to 4-6 years from the original 6 months; the water treatment regeneration system has strong popularization significance, the water treatment regeneration system can run more stably, the maintenance amount and the maintenance cost are greatly reduced, and the maintenance spare part cost is saved by 1.3 ten thousand yuan per year on average.
(3) The operation is stable, the liquid and the liquid are uniformly mixed, the adjustable range of the concentration of the regenerated alkali liquor between 2.2 percent and 2.6 percent can be ensured, and the countercurrent regeneration efficiency of the ion exchange resin is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the housing.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a front view of the nozzle.
Fig. 5 is a left side view of fig. 4.
Figure 6 is a front view of the throat.
Fig. 7 is a left side view of fig. 6.
FIG. 8 is a front view of the dilation tube.
Fig. 9 is a left side view of fig. 8.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-9, a base sprayer includes: the device comprises a shell 1, a nozzle 2, a throat pipe 3, an expansion pipe 4 and a liquid inlet pipe 5;
the shell 1 is a cylindrical pipe body with two open ends, and two ends of the shell 1 are both provided with flanges;
the nozzle 2, the throat pipe 3 and the expansion pipe 4 are sequentially arranged in the shell, a gap is reserved between the outlet end of the nozzle 2 and one end of the throat pipe 3, and the other end of the throat pipe 3 is connected with one end of the expansion pipe 4;
specifically, the nozzle 2 is a hollow conical cylinder, a large opening end of the conical cylinder is an inlet end, a small opening end of the conical cylinder is an outlet end, and the large opening end (i.e., the inlet end) of the conical cylinder is connected with one end of the housing 1 through a first flange 10; the throat pipe 3 is a cylindrical pipe body with a horn-shaped pipe orifice at one end; the expansion pipe 4 comprises a reducer pipe 6 and a circular connecting plate 7 connected with the small-mouth end of the reducer pipe 6, the circular connecting plate 7 is provided with a circular through hole, the reducer pipe 6 is communicated with the circular through hole of the circular connecting plate 7, the circular connecting plate 7 is connected with the other end of the throat pipe 3 through a bolt 9, the throat pipe 3 is communicated with the circular through hole of the circular connecting plate 7, and the large-mouth end of the reducer pipe 6 is positioned in the other end of the shell 1;
the liquid inlet pipe 5 is a vertical pipe, a second flange 8 is arranged at the upper end of the vertical pipe, and the lower end of the liquid inlet pipe 5 is vertically connected with the side wall of the shell 1 and is close to the inlet end of the nozzle 2.
The shell 1 is made of 304 stainless steel, the nozzle 2 is made of carbon steel, the throat pipe 3 is made of nylon plastic, and the expansion pipe 4 is made of steel.
During the use, regeneration demineralized water lets in throat 3 through nozzle 2 in, because the demineralized water is accelerated at throat department velocity of flow for demineralized water reduces and forms the negative pressure here, and alkali lye can enter into casing 1 through feed liquor pipe 5 automatically, and get into throat 3 through the clearance that leaves between nozzle 2 and the throat 3, mix the back in throat 3 with regeneration demineralized water, spout through expansion pipe 4.
Flow velocity of demineralized water at injector nozzle inlet V2-16 m3H, the pressure is 0.32MPa, and the temperature is 26 ℃; the size of the inlet of the ejector is DN80mm, the size of the liquid inlet pipe is DN40mm, and the size of the final outlet of the ejector is DN80 mm; the total length of the ejector is required to be 530mm, and the maximum concentration of the mixed regeneration liquid is 5%; the suction pressure of the alkali liquor is 0.103 MPa; the discharge pressure of the regenerated liquid was 0.15 MPa.
According to the technological requirements, the flow rate of the absorbed alkali liquor is V1，V1×32％＝(V2+V1)×5％
V1＝25×5％÷(32％-5％)＝4.63m3/h
Assuming a nozzle diameter D1Throat diameter of D2The gap between the two for passing the alkali liquor is X; let the flow velocity at the throat be c.
Under the ideal fluid state without considering friction, the energy equation according to fluid mechanics can be obtained
D2＝D1+2X
By integrating the above formulas
As the gap between the throat pipe and the nozzle is smaller, the flow speed of the alkali liquor is faster, the generated pressure is lower, the pressure difference of the alkali liquor end is larger, the production requirement can be basically met by taking X as 0.75mm, and relevant data is substituted into the formula to obtain
Calculated as D1＝11mm，D2＝12.5mm
Length L of throat2Can be replaced by 5D2Then L is2＝62.5mm
The gradient of the nozzle can be 13 degrees, which can meet the design requirement, so the length L1 of the nozzle is
Calculated L1＝150mm，
So that the length L of the expanded pipe section3＝530-150-62.5＝317.5mm。
And processing a corresponding alkali ejector according to the design size and the original related data.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. It should be noted that other modifications and equivalents may be made by those skilled in the art in light of the teachings of the present disclosure to achieve the same purpose, and should be construed as within the scope of the present disclosure.
Claims (7)
1. An alkali injector, characterized in that the injector comprises: the device comprises a shell (1), a nozzle (2), a throat pipe (3), an expansion pipe (4) and a liquid inlet pipe (5); the shell (1) is a cylindrical pipe body with two open ends; the nozzle (2), the throat pipe (3) and the expansion pipe (4) are sequentially arranged in the shell; a gap is reserved between the outlet end of the nozzle (2) and one end of the throat pipe (3), and the other end of the throat pipe (3) is connected with one end of the expansion pipe (4); the lower end of the liquid inlet pipe (5) is vertically connected with the side wall of the shell (1) and is close to the inlet end of the nozzle (2).
2. The injector as claimed in claim 1, characterized in that both ends of the housing (1) are provided with flanges.
3. The injector according to claim 1 or 2, characterized in that the nozzle (2) is a hollow conical cylinder, the large mouth end of which is the inlet end, and the large mouth end of which is connected with one end of the housing (1) by a first flange (10).
4. The ejector according to claim 1 or 2, wherein the throat (3) is a cylindrical tube with a flared mouth at one end.
5. The ejector according to claim 1 or 2, characterized in that the expansion pipe (4) comprises a reducer pipe (6) and a circular connecting plate (7) connected with the small end of the reducer pipe (6), the circular connecting plate (7) is provided with a circular through hole, the reducer pipe (6) is communicated with the circular through hole of the circular connecting plate (7), and the circular connecting plate (7) is connected with the other end of the throat pipe (3) through a bolt (9).
6. The injector according to claim 1 or 2, characterized in that the liquid inlet pipe (5) is a vertical pipe, the upper end of which is provided with a second flange (8).
7. The injector according to claim 1 or 2, characterized in that the housing (1) is made of stainless steel, the nozzle (2) is made of steel, the throat (3) is made of nylon plastic, and the expansion tube (4) is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023135300.0U CN214360400U (en) | 2020-12-23 | 2020-12-23 | Alkali ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023135300.0U CN214360400U (en) | 2020-12-23 | 2020-12-23 | Alkali ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214360400U true CN214360400U (en) | 2021-10-08 |
Family
ID=77987759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023135300.0U Active CN214360400U (en) | 2020-12-23 | 2020-12-23 | Alkali ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214360400U (en) |
-
2020
- 2020-12-23 CN CN202023135300.0U patent/CN214360400U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |