CN212408622U - Constant control system for outlet pressure of feed pump of vaporization system of heating furnace - Google Patents
Constant control system for outlet pressure of feed pump of vaporization system of heating furnace Download PDFInfo
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- CN212408622U CN212408622U CN202020756332.3U CN202020756332U CN212408622U CN 212408622 U CN212408622 U CN 212408622U CN 202020756332 U CN202020756332 U CN 202020756332U CN 212408622 U CN212408622 U CN 212408622U
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Abstract
The utility model discloses a heating furnace vaporization system is for water pump outlet pressure weighing apparatus and is decided control system, heating furnace vaporization system are equipped with water pump, water intaking container and the container of intaking, the water intaking container is through the input of water intaking union coupling water pump, the output of water pump is through advancing water piping connection container of intaking, install the governing valve of intaking on the inlet tube, the water intaking container is connected to on intaking the governing valve and the inlet tube between the water pump through the wet return, install the return water governing valve on the wet return. The utility model can ensure the stable value of the water inlet pressure, and the pipe wall pressure can not fluctuate greatly, thereby ensuring that the motor current is relatively stable and can not fluctuate due to the opening of the water inlet valve; the water pump operates stably, and the service cycle is prolonged.
Description
Technical Field
The utility model relates to a heating furnace vaporization system especially relates to the pressure balance of feed pump export and decides control system.
Background
When the water pump is used, particularly on a water supply pipeline controlled by a water inlet adjusting valve arranged in a vaporization system of a heating furnace, a medium is injected into a container through the water pump, when the water level reaches or is lower than a set value, the water inlet valve adjusts the opening degree of a valve position through a control system to control the water quantity, and after the water level reaches the set value target, the valve is completely closed. In the design of the water pump pipeline, a water return pipeline is arranged in front of a check valve at the outlet of the water pump and is controlled by a manual valve. In daily work, the water return valve cannot be adjusted in time, and the valve position is fixed at a certain position in the past.
The water return pipeline designed by the pipeline can not control the water return amount along with the water inlet amount and the water inlet pressure, when the valve position is adjusted by the water inlet adjusting valve, the pressure of the water supply outlet can be reduced or increased along with the opening or closing (even closing) of the valve position, the small flow of the water inlet can be influenced by the pressure of the water pump outlet, and after the water inlet valve is closed, the pressure of the water inlet pipe wall can reach the maximum value, so that the pipe wall, particularly the old pipe wall, is influenced and even explodes; the motor current is ultrahigh due to the large water inlet flow for a long time, so that the motor is burnt out.
Disclosure of Invention
The utility model aims to solve the technical problem of realize a water-feeding pump outlet pressure balance fixed control system who guarantees that heating furnace vaporization system work is totally stable.
In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides a control system is decided to feed pump outlet pressure balance for heating furnace vaporization system, heating furnace vaporization system is equipped with feed pump, water intaking container and water intake container, the input of water intaking pump is connected through the water intaking pipe to the water intaking container, the output of feed pump is through advancing water piping connection water intake container, install the governing valve of intaking on the inlet tube, the water intaking container passes through water pump outlet pipe way and water pump access connection, is equipped with manual valve and check valve on the water pump outlet pipe way, and the return water pipeline branches before manual valve of water pump outlet pipe way and check valve, returns the water intaking container with the medium drainage, install return water governing valve and check valve on the return water pipe.
The heating furnace vaporization system is provided with a water feeding pump and a standby water feeding pump, the input ends of the water feeding pump and the standby pump are connected to a water taking pipe through a water taking branch pipe, the output ends of the water feeding pump and the standby pump are connected to the outlet of a water inlet pipe water pump through a steam pocket water inlet branch pipe, and a water return pipe is branched before a water pump outlet steam pocket water inlet pipe manual regulating valve and a check valve and refluxes to a water taking container.
The position that the water inlet branch pipe is connected to the water inlet pipe is located on the water inlet pipe between the water inlet regulating valve and the water feeding pump, and the position that the water return branch pipe is connected to the water return pipe is located on the water return pipe between the water return regulating valve and the water feeding pump.
The water supply pump is characterized in that the return water regulating valve and the water inlet regulating valve are both electromagnetic valves, a pressure balance control system of the outlet of the water supply pump is provided with a controller, the controller is connected with control ends of the return water regulating valve and the water inlet regulating valve through signal lines, and a communication interface of the controller is connected with a display control mechanism.
The utility model can ensure the stable value of the water inlet pressure, and the pipe wall pressure can not fluctuate greatly, thereby ensuring that the motor current is relatively stable and can not fluctuate due to the opening of the water inlet valve; the water pump operates stably, and the service cycle is prolonged.
Drawings
The following brief descriptions of the contents expressed by each figure and the marks in the figures in the specification of the present invention are as follows:
FIG. 1 is a schematic diagram of a feedwater pump outlet pressure balance control system;
the labels in the above figures are: 1. a water intake container; 2. a water inlet container; 3. a feed pump; 4. a backup pump; 5. a water intake pipe; 6. a water return pipe; 7. a water inlet pipe; 8. a return water regulating valve; 9. a water inlet regulating valve; 10. a check valve; 11. the valve is adjusted manually.
Detailed Description
The following description of the embodiments with reference to the drawings is intended to illustrate the present invention in further detail, such as the shapes and structures of the components, the mutual positions and connections between the components, the functions and working principles of the components, the manufacturing process, and the operation and use methods, etc., so as to help those skilled in the art understand the present invention more completely, accurately and deeply.
As shown in figure 1, the constant pressure control system for the outlet of a feed water pump 3 of a vaporization system of a heating furnace is provided with the feed water pump 3, a water taking container 1 and a water inlet container 2, wherein the water pump is preferably additionally provided with an identical standby pump 4.
The pipeline connection mode is as follows: water intaking container 1 connects the input of water-feeding pump 3 through water intaking pipe 5, and water intaking container 2 is connected through inlet tube 7 to the output of water-feeding pump 3, installs into water governing valve 9 and the manual regulation valve 11, check valve 10 of intaking on the inlet tube 7, and water intaking container 1 is connected to into water governing valve 9 and water-feeding pump between 3 through wet return 6 on the inlet tube 7, installs the return water governing valve 8 that can realize remote control on wet return 6. The heating furnace vaporization system is provided with a standby pump 4, the input end of the standby pump 4 is connected to a water intake pipe 5 through a water intake branch pipe, the output end of the standby pump 4 is connected to a water inlet pipe 7 through a water inlet branch pipe, and the water inlet branch pipe is connected to a water return pipe 6 through a water return branch pipe. The position that the inlet branch pipe is connected to the inlet pipe 7 is located and sets up into manual control valve 11, check valve 10 between inlet valve 7 between water supply pump 3 and the inlet regulating valve 9, and the position that the return branch pipe is connected to the wet return 6 is located wet return 6 between return governing valve 8 and water supply pump 3, and sets up between manual control valve 11, check valve 10 and the water pump export of intaking. Therefore, the 6-way valve of the water return pipe in the original design is fully opened or is not provided with a valve, and the water inlet loop of the online used water pump and the standby water pump is collected into a collecting pipe to be used as a loop to a water taking point.
The water return regulating valve 8 and the water inlet regulating valve 9 are both solenoid valves with remote regulating functions, a constant pressure control system at the outlet of the water feeding pump 3 is provided with a controller (such as a PLC controller), the controller is connected with the control ends of the water return regulating valve 8 and the water inlet regulating valve 9 through signal lines, a communication interface of the controller is connected with a display control mechanism, the display control mechanism is a device capable of displaying and controlling, the state of the solenoid valves can be displayed, the opening degree of the solenoid valves is controlled, and the like, and the opening degree of the regulating valves is regulated in a PID (proportion integration differentiation). A target pressure value is set in the model, when the water supply pressure is larger than the target value, the opening of the water return automatic regulating valve is increased, the pressure is reduced, and when the water supply pressure is smaller than the target value, the opening of the water return regulating valve is reduced, and the pressure is increased. In the automatic adjustment, the model adjusts the opening of the water return valve in due time according to the change of the water supply pressure, so that the water supply pressure is stabilized at a target value. During the adjustment process, the pressure is reduced when the valve opening is increased, and the pressure is increased when the valve opening is decreased. The P value of PID must be negative.
The controller can input an interface on an operation picture through the display control mechanism, set the water inlet pressure value and feed back the actual pressure value, and when the water inlet valve is closed or opened, the water return pressure correspondingly opens or closes the 6-way regulating valve of the water return pipe according to the set pressure value, so that the water inlet pressure is ensured to be constant.
The present invention has been described above with reference to the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments described above, and that the invention is not limited to the specific embodiments described above, but rather is intended to cover various insubstantial modifications of the inventive method and solution, or its application to other applications without modification.
Claims (4)
1. The utility model provides a heating furnace vaporization system water-feeding pump outlet pressure constant control system, heating furnace vaporization system are equipped with water-feeding pump, water intaking container and water intake container, the water intaking container passes through the input of water intaking union coupling water-feeding pump, the output of water-feeding pump is through advancing water piping connection water intake container, its characterized in that: the water intake device is characterized in that a water intake regulating valve is installed on the water inlet pipe, the water intake container is connected with an inlet of the water pump through an outlet pipeline of the water pump, a manual valve and a check valve are arranged on an outlet pipeline of the water pump, a water return pipeline is branched in front of the manual valve and the check valve on the outlet pipeline of the water pump to drain media back to the water intake container, and a water return regulating valve and a check valve are installed on the water.
2. The feedwater pump outlet pressure balance control system of claim 1, wherein: the heating furnace vaporization system is provided with a water feeding pump and a standby water feeding pump, the input ends of the water feeding pump and the standby pump are connected to a water taking pipe through a water taking branch pipe, the output ends of the water feeding pump and the standby pump are connected to the outlet of a water inlet pipe water pump through a steam pocket water inlet branch pipe, and a water return pipe is branched before a water pump outlet steam pocket water inlet pipe manual regulating valve and a check valve and refluxes to a water taking container.
3. The feedwater pump outlet pressure balance control system of claim 2, wherein: the position that the water inlet branch pipe is connected to the water inlet pipe is located on the water inlet pipe between the water inlet regulating valve and the water feeding pump, and the position that the water return branch pipe is connected to the water return pipe is located on the water return pipe between the water return regulating valve and the water feeding pump.
4. A feed water pump outlet pressure balance control system as claimed in claim 1, 2 or 3, wherein: the water supply pump is characterized in that the return water regulating valve and the water inlet regulating valve are both electromagnetic valves, a pressure balance control system of the outlet of the water supply pump is provided with a controller, the controller is connected with control ends of the return water regulating valve and the water inlet regulating valve through signal lines, and a communication interface of the controller is connected with a display control mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020756332.3U CN212408622U (en) | 2020-05-09 | 2020-05-09 | Constant control system for outlet pressure of feed pump of vaporization system of heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020756332.3U CN212408622U (en) | 2020-05-09 | 2020-05-09 | Constant control system for outlet pressure of feed pump of vaporization system of heating furnace |
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| CN212408622U true CN212408622U (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464924A (en) * | 2021-07-27 | 2021-10-01 | 山西沃能化工科技有限公司 | Method for improving stability of boiler feed water |
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2020
- 2020-05-09 CN CN202020756332.3U patent/CN212408622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464924A (en) * | 2021-07-27 | 2021-10-01 | 山西沃能化工科技有限公司 | Method for improving stability of boiler feed water |
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