CN217002308U - Start-up protection device for pneumatic circulating water pump - Google Patents
Start-up protection device for pneumatic circulating water pump Download PDFInfo
- Publication number
- CN217002308U CN217002308U CN202220220124.0U CN202220220124U CN217002308U CN 217002308 U CN217002308 U CN 217002308U CN 202220220124 U CN202220220124 U CN 202220220124U CN 217002308 U CN217002308 U CN 217002308U
- Authority
- CN
- China
- Prior art keywords
- water pump
- circulating
- circulating water
- water
- oil way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Turbines (AREA)
Abstract
The utility model provides a start-up protection device of a steam-driven circulating water pump, which comprises a water pump circulating system, wherein the water pump circulating system comprises a steam turbine and a high-level oil tank, the right side of the water pump circulating system is connected with a water outlet pipe, an outlet expansion joint, a one-way valve and a water outlet valve are sequentially arranged on the water outlet pipe from left to right, the left side of the water pump circulating system is connected with a water inlet pipe, and the water inlet pipe is sequentially connected with an inlet expansion joint, a water inlet valve and a circulating water tank from right to left; the output end of the outlet expansion joint is connected with a machine starting circulation line, the machine starting circulation line is connected into a circulation water pool, and a machine starting circulation line valve is arranged on the machine starting circulation line. This pneumatic circulating water pump starts quick-witted protection device, can more steady when circulating water pump switches the operation of electronic circulating water pump, reduce circulating water system pressure fluctuation, extension circulating water pump life.
Description
Technical Field
The utility model relates to the technical field of chemical devices, in particular to a start-up protection device for a pneumatic circulating water pump.
Background
In recent years, the national requirements on energy conservation, environmental protection and emission reduction of chemical equipment are increasingly improved, and as the circulating water pump is a large consumer with energy (electricity) consumption and cost investment in the chemical equipment, the use of a steam turbine for dragging the steam-driven circulating water pump and the electric circulating water pump is the best choice for energy conservation, consumption reduction and resource utilization optimization.
The steam turbine drags the steam-driven circulating water pump to provide power by high-pressure steam, the pressure fluctuation of a steam system is large in the process of starting and stopping the device, the steam pressure fluctuation directly influences the stable operation of the circulating water pump, the electric circulating water pump is started preferentially in the operation of a general circulating water system, and the electric circulating water pump is switched into the steam-driven circulating water pump after the device operates stably.
Because the steam turbine takes a long time from warm-up to normal operation, the pressure at the outlet of the pump cannot reach the pressure of a circulating water pipe network during the period, the one-way valve at the outlet of the pump cannot be opened, the circulating water circulates in the pump cavity all the time, the water pump operates below the minimum flow, the water temperature in the pump body rises, and the pump is damaged.
If the electric circulating water pump stops too early, the steam-operated circulating water pump does not reach the designed flow, the pressure of the circulating water system is reduced, the circulating water flow is insufficient, the heat exchange load of the heat exchanger is reduced, high-temperature materials of the production system cannot be cooled, equipment damage or safety accidents are caused, and the safe and stable operation of the device is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model is realized by the following technical scheme:
a start-up protection device of a steam-driven circulating water pump comprises a water pump circulating system, wherein the water pump circulating system comprises a steam turbine and a high-level oil tank, the right side of the steam turbine is sequentially connected with a first coupler, a speed reducer, a second coupler and a circulating water pump from left to right, the left side of the steam turbine is connected with a high-temperature steam system, the high-level oil tank is connected with an oil circuit control system, the high-level oil tank and the oil circuit control system are respectively connected with an oil circuit I, an oil circuit II, an oil circuit III, an oil circuit IV and an oil circuit V in parallel, the oil circuit I is communicated with an input shaft of the steam turbine, the oil circuit II is communicated with an output shaft of the steam turbine, the oil circuit III is communicated with an input shaft of the speed reducer, the oil circuit IV is communicated with an output shaft of the speed reducer, and the oil circuit V is communicated with the input shaft of the circulating water pump; the water pump circulating system is characterized in that the right side of the water pump circulating system is connected with a water outlet pipe, an outlet expansion joint, a one-way valve and a water outlet valve are sequentially arranged on the water outlet pipe from left to right, the left side of the water pump circulating system is connected with a water inlet pipe, and the water inlet pipe is sequentially connected with an inlet expansion joint, a water inlet valve and a circulating water tank from right to left; the output end of the outlet expansion joint is connected with a machine starting circulation line, the machine starting circulation line is connected into a circulation water pool, and a machine starting circulation line valve is arranged on the machine starting circulation line.
Preferably, the pipe diameter of the starting machine circulation line is 1/3-1/2 of the pipe diameter of the water outlet pipe.
Preferably, an output shaft of the steam turbine is connected with an input shaft of the speed reducer through a first coupling, and an output shaft of the speed reducer is connected with an input shaft of the circulating water pump through a second coupling.
Compared with the prior art, the utility model has the beneficial effects that: 1. the utility model has simple structure, convenient manufacture and lower processing cost; 2. the utility model can prevent the pressure fluctuation of the circulating water system caused in the pump switching process of the circulating water pump; 3. the circulating water pump outlet of the utility model is provided with a starting circulating pipeline which is provided with a starting circulating line valve, the starting circulating line valve is connected to the circulating water tank from the front of the one-way valve of the water outlet pipe, the outlet of the circulating water pump is ensured not to be less than the minimum flow required by the pump, and the water supply flow cannot be interfered even if the pneumatic circulating water pump has large-amplitude rotation speed change in the switching process; 4. compared with the traditional motor driving mode, the mode that the steam turbine is driven by steam to drive the circulating water pump again is adopted, and the investment condition, the operation cost analysis, the safety and the reliability of the two driving modes are compared, so that the investment cost of the steam turbine is far lower than that of the motor, and the investment cost of the steam turbine for driving the circulating water pump can be recovered in a short time; 5. the oil station system and the high-level reserve oil tank are used for supplying oil to the circulating water pump system in a centralized manner, and the oil in the high-level oil tank is supplemented to an oil way through potential energy when power is off, so that the lubricating points of the circulating water pump are kept lubricated by oil and cooled under the high-speed operation, and the equipment is prevented from being damaged.
Drawings
The utility model is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic view of the connection structure of the present invention;
fig. 2 is a schematic view of the connection structure of the water pump circulation system of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:
a start-up protection device for a pneumatic circulating water pump comprises a water pump circulating system 1, wherein the water pump circulating system 1 comprises a steam turbine 101 and a high-level oil tank 102, the right side of the steam turbine 101 is sequentially connected with a first coupling 103, a speed reducer 104, a second coupling 105 and a circulating water pump 106 from left to right, the left side of the steam turbine 101 is connected with a high-temperature steam system 2, the high-level oil tank 102 is connected with an oil way control system 3, the high-level oil tank 102 and the oil path control system 3 are respectively connected in parallel with an oil path I301, an oil path II 302, an oil path III 303, an oil path IV 304 and an oil path V305, the first oil path 301 is communicated with an input shaft of the steam turbine 101 and supplies oil, the second oil path 302 is communicated with an output shaft of the steam turbine 101 and supplies oil, the oil way III 303 is communicated with an input shaft of the speed reducer 104 and supplies oil, the oil way IV 304 is communicated with an output shaft of the speed reducer 104 and supplies oil, and the oil way V305 is communicated with an input shaft of the circulating water pump 106 and supplies oil; the water pump circulating system 1 is characterized in that the right side of the water pump circulating system 1 is connected with a water outlet pipe 4, an outlet expansion joint 5, a one-way valve 6 and a water outlet valve 7 are sequentially arranged on the water outlet pipe 4 from left to right, the left side of the water pump circulating system 1 is connected with a water inlet pipe 8, and the water inlet pipe 8 is sequentially connected with an inlet expansion joint 9, a water inlet valve 10 and a circulating water tank 11 from right to left; the output end of the outlet expansion joint 5 is connected with an engine starting circulation line 12, the engine starting circulation line 12 is connected into the circulation water tank 11, an engine starting circulation line valve 13 is arranged on the engine starting circulation line 12, circulating water enters the circulation water tank 11 through the engine outlet engine starting circulation line 12 under the condition that the rotation speed of the circulation water pump 106 is low, the outlet of the circulation water pump 106 is not smaller than the minimum flow required by the pump, and even if the rotation speed of the circulation water pump 106 is greatly changed in the switching process, the water flow cannot be interfered. Along with the gradual rise of the speed-increasing load of the rotating speed of the steam turbine 101, after the circulating water pump 106 achieves stable operation, the one-way valve 6 on the water outlet pipe 4 is opened, meanwhile, the starting circulating line valve 13 on the starting circulating line 12 is slowly turned down until the starting circulating line valve is completely closed, the circulating water pump 106 is merged into a circulating water system, the rotating speed of the steam turbine 101 is changed to control the circulating water flow, and the stable operation of the circulating water system is ensured.
Furthermore, the pipe diameter of the starting machine circulation line 12 is 1/3-1/2 of the pipe diameter of the water outlet pipe 4, so that the minimum flow of the circulation water pump 106 can be ensured.
Further, an output shaft of the steam turbine 101 and an input shaft of the speed reducer 104 are connected by a first coupling 103, and an output shaft of the speed reducer 104 and an input shaft of the circulating water pump 106 are connected by a second coupling 105.
This pneumatic circulating water pump starts quick-witted protection device, can more steady when circulating water pump switches the operation of electronic circulating water pump, reduce circulating water system pressure fluctuation, extension circulating water pump life. The utility model has simple structure and convenient operation, and avoids the safety risk and economic loss caused by the pressure fluctuation of the circulating water system due to the switching of the circulating water pump.
The above detailed description of the embodiments of the present invention is provided as an example, and the present invention is not limited to the above described embodiments, and equivalent modifications of the present invention are within the scope of the present invention.
Claims (3)
1. The start-up protection device of the steam-driven circulating water pump is characterized by comprising a water pump circulating system (1), wherein the water pump circulating system (1) comprises a steam turbine (101) and a high-level oil tank (102), the right side of the steam turbine (101) is sequentially connected with a first coupler (103), a speed reducer (104), a second coupler (105) and a circulating water pump (106) from left to right, the left side of the steam turbine (101) is connected with a high-temperature steam system (2), the high-level oil tank (102) is connected with an oil way control system (3), the high-level oil tank (102) and the oil way control system (3) are respectively connected with a first oil way (301), a second oil way (302), a third oil way (303), a fourth oil way (304) and a fifth oil way (305) in parallel, the first oil way (301) is communicated with an input shaft of the steam turbine (101), and the second oil way (302) is communicated with an output shaft of the steam turbine (101), the oil way III (303) is communicated with an input shaft of the speed reducer (104), the oil way IV (304) is communicated with an output shaft of the speed reducer (104), and the oil way V (305) is communicated with an input shaft of the circulating water pump (106); the water pump circulating system (1) is characterized in that the right side of the water pump circulating system (1) is connected with a water outlet pipe (4), an outlet expansion joint (5), a one-way valve (6) and a water outlet valve (7) are sequentially arranged on the water outlet pipe from left to right, the left side of the water pump circulating system (1) is connected with a water inlet pipe (8), and the water inlet pipe (8) is sequentially connected with an inlet expansion joint (9), a water inlet valve (10) and a circulating water tank (11) from right to left; the output end of the outlet expansion joint (5) is connected with a machine starting circulation line (12), the machine starting circulation line (12) is connected into a circulation water pool (11), and a machine starting circulation line valve (13) is arranged on the machine starting circulation line (12).
2. The starting protection device for the steam-driven circulating water pump as claimed in claim 1, wherein the pipe diameter of the starting circulating line (12) is 1/3-1/2 of the pipe diameter of the water outlet pipe (4).
3. The startup protection device for the steam-driven circulating water pump according to claim 1, wherein an output shaft of the steam turbine (101) is connected with an input shaft of the speed reducer (104) through a first coupling (103), and an output shaft of the speed reducer (104) is connected with an input shaft of the circulating water pump (106) through a second coupling (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220220124.0U CN217002308U (en) | 2022-01-27 | 2022-01-27 | Start-up protection device for pneumatic circulating water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220220124.0U CN217002308U (en) | 2022-01-27 | 2022-01-27 | Start-up protection device for pneumatic circulating water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217002308U true CN217002308U (en) | 2022-07-19 |
Family
ID=82391907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220220124.0U Active CN217002308U (en) | 2022-01-27 | 2022-01-27 | Start-up protection device for pneumatic circulating water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217002308U (en) |
-
2022
- 2022-01-27 CN CN202220220124.0U patent/CN217002308U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201326421Y (en) | Steam turbine lubricating oil supply device | |
| CN102865232A (en) | Energy saving system of electrically driven feed pump of power frequency-variable frequency switching type liquid coupling | |
| CN110762198A (en) | Wind-powered electricity generation gear box is lubricated to be purified and temperature control system | |
| CN206093462U (en) | Lubricating system with multiple emergent function | |
| CN217002308U (en) | Start-up protection device for pneumatic circulating water pump | |
| CN210164663U (en) | Double-pneumatic feed water pump steam turbine recirculation water pipeline device | |
| CN215596407U (en) | Water turbine main shaft seal water supply and drainage system | |
| CN117005917A (en) | Circulating water energy-saving system for non-contact main pipe and operation method | |
| CN201297863Y (en) | Energy-saving device for circulating water system of thermal power plant | |
| CN215861002U (en) | Machine of centrifugal pump seals sparge water bearing cooling water supply installation | |
| CN217482498U (en) | Heating system applied to wind power lubricating system | |
| CN114718682B (en) | Sintering steam dragging system and method | |
| US20240159132A1 (en) | Electrically-driven fracturing system | |
| CN202885588U (en) | Coal power plant circulating water system energy conservation device | |
| CN214091974U (en) | Device for driving feed pump by adopting main shaft of steam turbine | |
| CN210768952U (en) | Oil supply system of steam turbine | |
| CN211008781U (en) | Water pump energy-saving system for industrial large-scale circulating water station | |
| CN209943001U (en) | Circulating cooling return water surplus energy utilization facility | |
| CN201858163U (en) | Power plant large-scale unit boiler feed pump novel main shaft driving system | |
| CN202182459U (en) | Circulation line system for booster pump of turbine driven boiler feed water pump and deaerator water tank | |
| CN112483419A (en) | Double dynamical boiler feed pump system of nimble switching | |
| CN212614904U (en) | Coaxial constant-speed water supply pump system | |
| CN216142914U (en) | Exhaust gas recovery device of industrial water self-priming pump | |
| CN216306036U (en) | Steam source system of small steam turbine based on steam turbine increasing technology for deep peak shaving unit | |
| CN216904314U (en) | Turbine/electric power dual-drive and energy storage integrated system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |