CN114295405A - Water supply pump boosting test device and method - Google Patents
Water supply pump boosting test device and method Download PDFInfo
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- CN114295405A CN114295405A CN202210013919.9A CN202210013919A CN114295405A CN 114295405 A CN114295405 A CN 114295405A CN 202210013919 A CN202210013919 A CN 202210013919A CN 114295405 A CN114295405 A CN 114295405A
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Abstract
The application discloses a water feeding pump boosting test device and method, belongs to the field of adjusting or control systems, and is used for solving the problem that the boosting rate of a boiler primary system hydrostatic test is difficult to control. The device comprises: the water feeding pump is used for boosting the pressure of a non-high-pressure medium to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feeding pump through an inlet pipe, and a valve is arranged on the inlet pipe; and the outlet pipeline is connected with the feed pump and is used for conveying the high-pressure medium to a downstream device, wherein a balance valve is arranged on the water outlet pipeline.
Description
Technical Field
The application belongs to the field of adjusting or controlling systems, and particularly relates to a water feeding pump boosting test device and method.
Background
In the technical field of thermal power plant boilers, leakage of four pipes of the boiler becomes one of main risk points of non-stop of thermal power, and a boiler hydraulic pressure test is required after the pipes on a heating surface of the boiler are replaced in a large area. The boiler water pressure test mostly adopts a boiler feed pump to boost pressure.
The first method is to boost the pressure of a primary boiler system through a boiler feed water bypass regulating valve, namely a boiler feed water pump → a feed water pump outlet valve → a boiler feed water bypass regulating valve → an economizer → a superheater system; the second method is to perform primary system pressure boosting of the boiler through a boiler superheater attemperation water regulating valve, namely a boiler feed water pump → a feed water pump outlet valve → a boiler superheater attemperation water pipeline → a superheater system. No matter the boiler feed water bypass regulating valve is used for boosting operation of a boiler hydraulic test, or the boiler superheater temperature reduction water regulating valve is used for boosting operation of the boiler hydraulic test, the boosting speed of the boiler is difficult to control due to the fact that the through-flow pipe diameter of the boiler feed water pipeline regulating valve is large, and safety of all heating surfaces of a boiler pipeline cannot be guaranteed.
Disclosure of Invention
The embodiment of the application aims to provide a water feeding pump boosting test device and method, and the problem that the boosting rate of a boiler primary system hydraulic test is difficult to control can be solved.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a water supply pump pressure rise test device, the device includes: the water feeding pump is used for boosting the pressure of a non-high-pressure medium to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feeding pump through an inlet pipe, and a valve is arranged on the inlet pipe; and the outlet pipeline is connected with the feed pump and is used for conveying the high-pressure medium to a downstream device, wherein a balance valve is arranged on the outlet pipeline.
In a second aspect, an embodiment of the present application provides a method for a boost test of a feed pump, where the method includes: boosting a non-high-pressure medium through a feed pump to obtain a high-pressure medium, wherein the non-high-pressure medium enters the feed pump through an inlet pipe, and a valve is arranged on the inlet pipe; and conveying the high-pressure medium to a downstream device through an outlet pipeline, wherein a balance valve is arranged on the outlet pipeline.
In the embodiment of the application, the water feeding pump is used for boosting the pressure of non-high-pressure medium to obtain high-pressure medium, wherein the non-high-pressure medium enters the water feeding pump through an inlet pipe, and the inlet pipe is provided with a valve; and the outlet pipeline is connected with the water feeding pump and used for conveying the high-pressure medium to a downstream device, wherein a balance valve is arranged on the outlet pipeline, so that the problem that the boosting rate of a boiler primary system hydrostatic test is difficult to control can be solved, the boosting rate of the boiler is controllable, and the safety of a heating surface in the boosting process of the boiler hydrostatic test is further ensured.
In the embodiment of the application, a non-high-pressure medium is boosted by a feed pump to obtain a high-pressure medium, wherein the non-high-pressure medium enters the feed pump through an inlet pipe, and the inlet pipe is provided with a valve; will through the outlet pipe high pressure medium carries to low reaches device, wherein be provided with the balanced valve on the outlet pipe, can solve the problem that boiler primary system hydrostatic test boost rate is difficult to control, realize that boiler boost rate is controllable, and then ensured the safety of the heating surface among the boiler hydrostatic test boost process.
Drawings
FIG. 1 is a schematic structural diagram of a water supply pump pressure rise test device provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of another feedwater pump boost test device provided in the embodiments of the present application;
FIG. 3 is a schematic flow chart of a method for testing the pressure rise of a feed pump according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The water supply pump pressure rise test device provided by the embodiment of the present application is described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a water feed pump pressure rise test device provided by an embodiment of the invention. The device comprises: a feed pump 110 and an outlet pipe 120.
And the feed water pump 110 is used for boosting the pressure of the non-high-pressure medium to obtain the high-pressure medium, wherein the non-high-pressure medium enters the feed water pump through an inlet pipe, and a valve is arranged on the inlet pipe.
And an outlet pipe 120 connected with the feed water pump and used for conveying the high-pressure medium to a downstream device 130, wherein a balance valve 121 is arranged on the outlet pipe.
Non-high-pressure medium enters the feed pump 110 through an inlet pipe, after the pressure of the feed pump 110 is increased, high-pressure medium is obtained at the outlet of the feed pump 110, for example, the pressure of the high-pressure medium can reach 8 megapascal (MPa), when the high-pressure medium passes through the outlet pipeline 120, the flow rate of the high-pressure medium is adjusted by opening the balance valve 121 arranged on the outlet pipeline 120, for example, the pressure increasing rate of a primary system hydraulic test of the boiler is controlled to be not more than 0.2MPa/min, so that the pressure increasing rate of the boiler is controllable, and the safety of a heating surface in the pressure increasing process of the hydraulic test of the boiler is further ensured.
In one implementation, the feed pump 110 may be a steam feed pump or an electric feed pump.
In one implementation, the initial speed of the feed pump 110 is greater than 2000r/min, and the feed pump outlet pressure is greater than 8 MPa.
In one implementation, a pressure gauge is further provided before the balance valve 121 for measuring the outlet pressure value of the feed water pump 110.
In one implementation, the downstream device 130 includes piping to an economizer to a superheater via a boiler feedwater bypass adjustment valve or piping to a superheater via a boiler superheater attemperation water piping adjustment door.
The non-high-pressure medium enters the water feeding pump 110 through the inlet pipe, the high-pressure medium is obtained at the outlet of the water feeding pump 110 after the pressure of the water feeding pump 110 is increased, the pressure value of the high-pressure medium is obtained by observing the display value of the pressure gauge when the high-pressure medium passes through the outlet pipeline 120, and the pressure value is generally larger than 8 MPa. At this time, when the high-pressure medium flows through the boiler feed water bypass regulating valve or the superheater attemperation water pipeline regulating valve without the flow rate regulation of the balance valve 121, the front-back differential pressure of the regulating valve is too large, so that the boiler feed water bypass regulating valve or the superheater attemperation water regulating valve is jammed and damaged, the service life of the regulating valve is influenced, and the equipment maintenance amount and the operation risk are increased.
According to the water feed pump boosting test device provided by the embodiment of the invention, the water feed pump is used for boosting a non-high-pressure medium to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feed pump through an inlet pipe, and a valve is arranged on the inlet pipe; and the outlet pipeline is connected with the water feeding pump and used for conveying the high-pressure medium to a downstream device, wherein a balance valve is arranged on the outlet pipeline, so that the problem that the boosting rate of a boiler primary system hydrostatic test is difficult to control can be solved, the boosting rate of the boiler is controllable, and the safety of a heating surface in the boosting process of the boiler hydrostatic test is further ensured.
Fig. 2 is a schematic structural diagram of another feedwater pump boost test device provided in the embodiment of the present invention. The device comprises: a feedwater pump 210 and an outlet conduit 220.
And the feed water pump 210 is used for boosting the pressure of the non-high-pressure medium to obtain the high-pressure medium, wherein the non-high-pressure medium enters the feed water pump through an inlet pipe, and a valve is arranged on the inlet pipe.
And an outlet pipe 220 connected to the feed pump 210 for delivering the high-pressure medium to a downstream device 230, wherein a balance valve 221 is disposed on the outlet pipe 220. The balance valve is used for adjusting the flow rate of the high-pressure medium in the boosting test process to obtain a secondary high-pressure medium with a preset pressure difference with the high-pressure medium. The outlet pipe 220 is further provided with an outlet valve 222, wherein the outlet valve 222 is connected in parallel with the balance valve 221 and is used for controlling the outflow of the high-pressure medium after the pressure rise test is finished. The outlet valve 222 is in a closed state during the boost test, and the equalization valve 221 is in an open state during the boost test.
The non-high pressure medium enters the feed water pump 210 through the inlet pipe, and after the pressure of the feed water pump 210 is increased, the high pressure medium is obtained at the outlet of the feed water pump 210, and the high pressure medium has two parallel passages when passing through the outlet pipeline 220: during the pressure-increasing test, by opening the balance valve 221 and closing the outlet valve 222, the balance valve 221 is used for adjusting the flow rate of the high-pressure medium, and a secondary high-pressure medium with a preset pressure difference with the high-pressure medium is obtained; after the pressure rise test is finished, the outlet valve 222 is used for regulating the flow rate of the high-pressure medium by closing the balance valve 221 and opening the outlet valve 222.
Thereby, the feed water pump 210 is used for pressurizing non-high pressure medium to obtain high pressure medium, wherein the non-high pressure medium enters the feed water pump 210 through an inlet pipe, and a valve is arranged on the inlet pipe; the outlet pipeline 220 is connected with the feed pump 210 and used for conveying the high-pressure medium to the downstream device 230, wherein a balance valve 221 is arranged on the outlet pipeline 220, the balance valve 221 is used for adjusting the flow rate of the high-pressure medium in the boosting test process to obtain a secondary high-pressure medium with a preset pressure difference with the high-pressure medium, the problem that the boosting rate is difficult to control in the hydraulic test process of a primary system of the boiler can be solved, the boosting rate of the boiler can be controlled, the safety of a heating surface in the boosting process of the hydraulic test of the boiler is further guaranteed, in addition, an outlet valve 222 is further arranged on the outlet pipeline 220, the outlet valve 222 is connected with the balance valve 221 in parallel and used for adjusting the flow rate of the high-pressure medium after the boosting test is finished, and the flexible switching between the boosting test of the boiler and the normal use of the boiler is also realized.
According to the water feed pump boosting test device provided by the embodiment of the invention, the water feed pump is used for boosting a non-high-pressure medium to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feed pump through an inlet pipe, and a valve is arranged on the inlet pipe; the outlet pipeline is connected with the water feeding pump and used for conveying the high-pressure medium to a downstream device, wherein a balance valve is arranged on the outlet pipeline, the problem that the boosting rate is difficult to control in the boiler primary system hydraulic test process can be solved, the boosting rate of the boiler is controllable, and the safety of a heating surface in the boiler hydraulic test boosting process is further guaranteed.
According to the water feed pump boosting test device provided by the embodiment of the invention, the water feed pump is used for boosting a non-high-pressure medium to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feed pump through an inlet pipe, and a valve is arranged on the inlet pipe; the outlet pipeline is connected with the water feeding pump and used for conveying the high-pressure medium to a downstream device, a balance valve is arranged on the outlet pipeline and used for adjusting the flow rate of the high-pressure medium in the boosting test process to obtain a secondary high-pressure medium with a preset pressure difference with the high-pressure medium, and an outlet valve is further arranged on the outlet pipeline and connected with the balance valve in parallel and used for adjusting the flow rate of the high-pressure medium after the boosting test is finished.
In one implementation, the feedwater pump 210 may be a steam-powered feedwater pump or an electric feedwater pump.
In one implementation, the initial speed of the feed pump 210 is greater than 2000r/min, and the outlet pressure of the feed pump is greater than 8 MPa.
In one implementation, the non-high pressure medium includes at least one fluid medium, including a gas flow medium or a liquid flow medium.
In one implementation, the material of the balance valve 221 is determined according to the fluid property and the pressure value of the high-pressure medium.
In one implementation, the material of the balance valve 221 includes at least one of a cast iron valve, a cast steel valve, and a forged steel valve.
In one implementation, the equalization valve 221 comprises a pressure relief valve.
In one implementation, the outlet valve 222 includes at least one of a shut-off valve, a gate valve, and a butterfly valve.
In one implementation, a pressure gauge is further provided before the balance valve 221 and/or the outlet valve 222 for measuring the outlet pressure value of the feed water pump 210.
In one implementation, the downstream device 230 includes piping to an economizer to a superheater via a boiler feedwater bypass adjustment valve or piping to a superheater via a boiler superheater attemperation water piping adjustment door.
According to the boosting test method for the feed pump, provided by the embodiment of the invention, a non-high-pressure medium is boosted by the feed pump to obtain a high-pressure medium, wherein the non-high-pressure medium enters the feed pump through an inlet pipe, and a valve is arranged on the inlet pipe; the high-pressure medium is conveyed to a downstream device through an outlet pipeline, wherein a balance valve is arranged on the outlet pipeline, and the problem that the boosting rate of a primary system hydraulic test of the boiler is difficult to control can be solved.
The method for testing the boost of the feed pump provided by the embodiment of the present application is described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
FIG. 3 shows a method for testing the boost pressure of a feed pump according to an embodiment of the invention. The method can be executed by the feed pump boosting test device in any device embodiment, and comprises the following steps:
s101: and boosting the non-high-pressure medium by a feed water pump to obtain a high-pressure medium, wherein the non-high-pressure medium enters the feed water pump through an inlet pipe, and a valve is arranged on the inlet pipe.
S102: and conveying the high-pressure medium to a downstream device through an outlet pipeline, wherein a balance valve is arranged on the water outlet pipeline.
The method comprises the steps that non-high-pressure media enter a water feeding pump through an inlet pipe, the non-high-pressure media are pressurized through the water feeding pump, the high-pressure media are obtained at an outlet of the water feeding pump, if the pressure of the high-pressure media can reach 8MPa, when the high-pressure media pass through an outlet pipeline, a balance valve arranged on the outlet pipeline is opened, the flow speed of the high-pressure media is adjusted, the pressure boosting rate of a boiler is controllable, and the safety of a heating surface in the pressure boosting process of a boiler hydraulic pressure test is further guaranteed.
According to the water feed pump boosting test method provided by the embodiment of the invention, a non-high-pressure medium is boosted by a water feed pump to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feed pump through an inlet pipe, and a valve is arranged on the inlet pipe; the high-pressure medium is conveyed to a downstream device through an outlet pipeline, wherein a balance valve is arranged on the outlet pipeline, and the problem that the boosting rate of a primary system hydraulic test of the boiler is difficult to control can be solved.
In one implementation, the balancing valve is used for adjusting the flow rate of the high-pressure medium during the boosting test to obtain a second high-pressure medium with a preset pressure difference with the high-pressure medium.
In one implementation, the outlet pipe is further provided with an outlet valve, wherein the outlet valve is connected in parallel with the balance valve and used for adjusting the flow rate of the high-pressure medium after the pressure rise test is finished.
In one implementation, the outlet valve is in a closed state during the boost test and the balancing valve is in an open state during the boost test.
In one implementation, the downstream device includes piping to an economizer to a superheater via a boiler feedwater bypass regulator or piping to a superheater via a boiler superheater desuperheated water piping regulating gate.
In one implementation, the feed pump may be a steam feed pump or an electric feed pump.
In one implementation mode, the initial rotating speed of the water feeding pump is larger than 2000r/min, and the outlet pressure of the water feeding pump is larger than 8 MPa.
In one implementation, the non-high pressure medium includes at least one fluid medium, including a gas flow medium or a liquid flow medium.
In one implementation, the material of the balance valve is determined according to the fluid property and the pressure value of the high-pressure medium.
In one implementation, the material of the balance valve includes at least one of a cast iron valve, a cast steel valve, and a forged steel valve.
In one implementation, the balancing valve includes a pressure relief valve.
In one implementation, the outlet valve comprises at least one of a shut-off valve, a gate valve, a butterfly valve.
In one implementation, a pressure gauge is further provided before the balancing valve and/or the outlet valve for measuring the outlet pressure value of the feed water pump.
It should be noted that, the embodiment of the method for testing the boost pressure of the feed water pump in this specification and the embodiment of the device for testing the boost pressure of the feed water pump in this specification are based on the same inventive concept, so that the specific implementation of this embodiment can refer to the implementation of the corresponding device for testing the boost pressure of the feed water pump, and repeated details are not repeated.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a feed pump pressure boost test device which characterized in that, the device includes:
the water feeding pump is used for boosting the pressure of a non-high-pressure medium to obtain a high-pressure medium, wherein the non-high-pressure medium enters the water feeding pump through an inlet pipe, and a valve is arranged on the inlet pipe;
and the outlet pipeline is connected with the feed pump and is used for conveying the high-pressure medium to a downstream device, wherein a balance valve is arranged on the outlet pipeline.
2. The apparatus of claim 1, wherein the balancing valve is configured to adjust the flow rate of the high pressure medium during a boost test to obtain a second high pressure medium having a predetermined pressure differential with the high pressure medium.
3. The device according to claim 1, wherein the outlet pipeline is further provided with an outlet valve, wherein the outlet valve is connected with the balance valve in parallel and used for regulating the flow of the high-pressure medium after the pressure rise test is finished.
4. The apparatus of claim 3, wherein the outlet valve is in a closed state during the boost test and the equalization valve is in an open state during the boost test.
5. The apparatus of claim 1, wherein the non-high pressure medium comprises at least one fluid medium.
6. The apparatus of claim 5, wherein the fluid medium comprises a gas flow medium or a liquid flow medium.
7. The apparatus of claim 1, wherein the material of the balancing valve is determined according to the high pressure medium.
8. The apparatus of claim 7, wherein the balancing valve is made of a material determined according to the high pressure medium, comprising:
and determining the material of the balance valve according to the fluid property and the pressure value of the high-pressure medium, wherein the material of the balance valve comprises at least one of a cast iron valve, a cast steel valve and a forged steel valve.
9. A method for testing the boosting of a feed pump is characterized by comprising the following steps:
boosting a non-high-pressure medium through a feed pump to obtain a high-pressure medium, wherein the non-high-pressure medium enters the feed pump through an inlet pipe, and a valve is arranged on the inlet pipe;
and conveying the high-pressure medium to a downstream device through an outlet pipeline, wherein a balance valve is arranged on the water outlet pipeline.
10. The method of claim 9, wherein the balancing valve is used to adjust the flow rate of the high pressure medium during a boost test to obtain a sub-high pressure medium having a predetermined pressure differential with the high pressure medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210013919.9A CN114295405A (en) | 2022-01-06 | 2022-01-06 | Water supply pump boosting test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210013919.9A CN114295405A (en) | 2022-01-06 | 2022-01-06 | Water supply pump boosting test device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114295405A true CN114295405A (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210013919.9A Pending CN114295405A (en) | 2022-01-06 | 2022-01-06 | Water supply pump boosting test device and method |
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| Country | Link |
|---|---|
| CN (1) | CN114295405A (en) |
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2022
- 2022-01-06 CN CN202210013919.9A patent/CN114295405A/en active Pending
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