A condensate flow measurement device

Abstract

This invention relates to a condensate flow measurement device, characterized by comprising: a low-pressure heater, a deaerator, a first pipe, a second pipe, a third pipe, a first connector, a second connector, and an ASME nozzle. When unit performance testing is required, the third and fourth connectors of the third pipe are detached from the first and second connectors, respectively. The ASME nozzle is then placed between the first and second pipes. A fifth connector of the ASME nozzle is then connected to the first connector, and a sixth connector is connected to the second connector. This detachable ASME nozzle allows for the simultaneous construction of two or more units in a power plant to utilize only one set of ASME flow nozzles. Performance tests of different units can be conducted at different times, allowing multiple units to share a single ASME flow nozzle.

Description

Technical Field

[0001] This invention relates to a condensate flow rate measuring device. Background Technology

[0002] Currently, in thermal power plants, the main function of the condensate system is to pressurize the condensate from the condenser hot well using a condensate pump, and then transport it to the deaerator after passing through a chemical demineralization unit, shaft seal cooler, and low-pressure heater. A flow meter must be installed before the condensate enters the deaerator to measure the main condensate flow rate, as this flow rate is crucial data for daily unit operation monitoring and performance testing.

[0003] Because standard orifice plates offer high measurement accuracy, wide applicability, and low cost, they are commonly used for condensate flow measurement in daily unit operation monitoring. Standard orifice plates are inexpensive to calibrate and easy to disassemble and send for testing. However, unit performance evaluation tests require higher accuracy in flow measurement, necessitating the use of high-precision differential pressure element ASME nozzles. Furthermore, each unit requiring measurement needs an ASME nozzle. The high accuracy of ASME nozzles leads to higher equipment costs, resulting in cumbersome and expensive maintenance and high periodic calibration fees. Summary of the Invention

[0004] The purpose of this invention is to provide a condensate flow measurement device that allows multiple units to use a single ASME nozzle.

[0005] To achieve the above objectives, the present invention provides a condensate flow measurement device, comprising: a low-pressure heater, a deaerator, a first pipe, a second pipe, a third pipe, a first connector, a second connector, and an ASME nozzle; a first end of the first pipe is connected to the low-pressure heater, and a second end of the first pipe is connected to the first connector; a first end of the second pipe is connected to the second connector, and a second end of the second pipe is connected to the deaerator;

[0006] The third pipe is provided with a third connector that can be detachably connected to the first connector and a fourth connector that can be detachably connected to the second connector at opposite ends; the ASME nozzle is provided with a fifth connector that can be detachably connected to the first connector and a sixth connector that can be detachably connected to the second connector at opposite ends.

[0007] Optionally, it also includes: a flow orifice plate; the flow orifice plate is disposed on the second pipe.

[0008] Optionally, it also includes: a tee, a fourth pipe, and a fifth pipe; the first end of the tee is connected to the second pipe; the second end of the tee is connected to the first end of the fourth pipe; the third section of the tee is connected to the first end of the fifth pipe; the second end of the fourth pipe is connected to the deaerator; and the second end of the fifth pipe is connected to the deaerator.

[0009] Optionally, it further includes: a first check valve and a second check valve; the first check valve is disposed on the fourth pipe and is configured to allow condensate to flow from the second pipe to the fourth pipe while preventing condensate from flowing in the opposite direction; the second check valve is disposed on the fifth pipe and is configured to allow condensate to flow from the second pipe to the fifth pipe while preventing condensate from flowing in the opposite direction.

[0010] Optionally, it also includes: a first bolt; the first connector, the third connector, and the fifth connector are all flanges; the first connector is provided with a first mounting hole; the third connector is provided with a third mounting hole; and the fifth connector is provided with a fifth mounting hole.

[0011] Wherein, the first bolt passes through the first mounting hole and the third mounting hole in sequence to fix the first connector and the third connector, or the first bolt passes through the first mounting hole and the fifth mounting hole in sequence to fix the first connector and the fifth connector.

[0012] Optionally, the first connector, the third connector, and the fifth connector are circular structures.

[0013] Optionally, it also includes: a second bolt; the second connector, the fourth connector, and the sixth connector are all flanges; the second connector is provided with a second mounting hole; the fourth connector is provided with a fourth mounting hole; and the sixth connector is provided with a sixth mounting hole.

[0014] The second bolt passes through the second mounting hole and the fourth mounting hole in sequence to fix the second connector and the fourth connector, or the second bolt passes through the second mounting hole and the sixth mounting hole in sequence to fix the second connector and the sixth connector.

[0015] Optionally, the second connector, the fourth connector, and the sixth connector are circular structures.

[0016] Compared with the prior art, the condensate flow measurement device of this invention has the following advantages:

[0017] In this embodiment of the invention, the ASME nozzle and the third pipe can be installed in a switchable manner into the condensate flow measurement device. During normal system operation, the third and fourth connectors of the third pipe are connected to the first and second connectors respectively, so that the first, third, and second pipes sequentially form a passage, enabling normal system operation. When unit performance testing is required, the third and fourth connectors of the third pipe are detached from the first and second connectors respectively. Then, the ASME nozzle is placed between the first and second pipes, and the fifth connector of the ASME nozzle is connected to the first connector, and the sixth connector of the ASME nozzle is connected to the second connector, so that the first, ASME nozzle, and second pipe sequentially form a passage. This application, through the detachable design of the ASME nozzle, allows for the simultaneous construction of two or more units in a power plant to procure only one set of ASME flow nozzles. Performance tests of different units can be conducted at different times, allowing multiple units to share a single set of ASME flow nozzles. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention (with a third pipe installed);

[0019] Figure 2 This is a structural schematic diagram of an embodiment of the present invention (with an ASME nozzle installed).

[0020] In the diagram, 1. Low-pressure heater; 2. Deaerator; 3. First pipe; 4. Second pipe; 5. Third pipe; 6. First connector; 7. Second connector; 8. ASME nozzle; 9. Third connector; 10. Fourth connector; 11. Fifth connector; 12. Sixth connector; 13. Flow orifice plate; 14. Tee; 15. Fourth pipe; 16. Fifth pipe; 17. First check valve; 18. Second check valve; 19. First valve. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0022] First, it should be noted that the directions such as top, bottom, upward, and downward mentioned in this article are defined relative to the directions in the various accompanying figures. They are relative concepts and therefore can change depending on their different positions and practical applications. Therefore, these or other directions should not be interpreted as restrictive terms.

[0023] It should be noted that the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude the plural.

[0024] Furthermore, it should be noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the accompanying drawings, can still be combined among these technical features (or their equivalents) to obtain other embodiments of this application not directly mentioned herein.

[0025] It should also be understood that while the terms "first," "second," etc., are used in this document to describe various types of information, this information should not be limited to these terms, which are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0026] It should be noted that in different figures, the same reference numerals denote the same or substantially the same components.

[0027] like Figure 1 and Figure 2 As shown in the preferred embodiment of the present invention, a condensate flow measurement device includes: a low-pressure heater 1, a deaerator 2, a first pipe 3, a second pipe 4, a third pipe 5, a first connector 6, a second connector 7, and an ASME nozzle 8. The first end of the first pipe 3 is connected to the low-pressure heater 1, and the second end of the first pipe 3 is connected to the first connector 6; the first end of the second pipe 4 is connected to the second connector 7, and the second end of the second pipe 4 is connected to the deaerator 2.

[0028] The third pipe 5 is provided with a third connector 9 that can be detachably connected to the first connector 6 and a fourth connector 10 that can be detachably connected to the second connector 7 at opposite ends. The ASME nozzle 8 is provided with a fifth connector 11 that can be detachably connected to the first connector 6 and a sixth connector 12 that can be detachably connected to the second connector 7 at opposite ends.

[0029] Based on the above structure, the ASME nozzle 8 and the third pipe 5 in this application can be installed in a switchable manner into the condensate flow measurement device. See also Figure 1 During normal system operation, the third connector 9 and the fourth connector 10 of the third pipe 5 are connected to the first connector 6 and the second connector 7, respectively, so that the first pipe 3, the third pipe 5, and the second pipe 4 form a passage in sequence, thereby enabling normal system operation. (See also...) Figure 2When unit performance testing is required, the third connector 9 and the fourth connector 10 of the third pipe 5 are detached from the first connector 6 and the second connector 7, respectively. Then, the ASME nozzle 8 is placed between the first pipe 3 and the second pipe 4. Then, the fifth connector 11 of the ASME nozzle 8 is connected to the first connector 6, and the sixth connector 12 of the ASME nozzle 8 is connected to the second connector 7, so that the first pipe 3, the ASME nozzle 8 and the second pipe 4 form a passage in sequence. This application allows the detachable setting of the ASME nozzle 8 to enable a power plant to build two or more units at the same time, and only one set of ASME flow nozzles needs to be purchased. The performance tests of different units are carried out in different time periods, and multiple units can share one set of ASME flow nozzles.

[0030] Furthermore, this application also includes a flow orifice plate 13. The flow orifice plate 13 is disposed on the second pipe 4, so that the flow orifice plate 13 and the ASME nozzle 8 are arranged in series during the unit performance test of the condensate flow measuring device of this application, so that the ASME nozzle 8 and the flow orifice plate 13 can measure simultaneously.

[0031] In one possible embodiment, this application further includes: a tee 14, a fourth pipe 15, and a fifth pipe 16. The first end of the tee 14 is connected to the second pipe 4, the second end of the tee 14 is connected to the first end of the fourth pipe 15, the third section of the tee 14 is connected to the first end of the fifth pipe 16, the second end of the fourth pipe 15 is connected to the deaerator 2, and the second end of the fifth pipe 16 is connected to the deaerator 2, so that the condensate from the second pipe 4 can be diverted through the tee 14.

[0032] In one possible embodiment, the application further includes a first check valve 17 and a second check valve 18. The first check valve 17 is disposed on the fourth conduit 15 and is configured to allow condensate to flow from the second conduit 4 towards the fourth conduit 15 while preventing condensate from flowing in the opposite direction. The second check valve 18 is disposed on the fifth conduit 16 and is configured to allow condensate to flow from the second conduit 4 towards the fifth conduit 16 while preventing condensate from flowing in the opposite direction, thereby preventing condensate from flowing back into the second conduit 4 from the fourth conduit 15 and the fifth conduit 16, which could cause measurement errors in the ASME nozzle 8 and the flow orifice plate 13.

[0033] Furthermore, this application also includes a first valve 19. The first valve 19 is disposed on the first pipe 3 to control the condensate passage on the first pipe 3.

[0034] Furthermore, this application also includes: a first bolt. The first connecting member 6, the third connecting member 9, and the fifth connecting member 11 are all flanges. The first connecting member 6 is provided with a first mounting hole, the third connecting member 9 is provided with a third mounting hole, and the fifth connecting member 11 is provided with a fifth mounting hole. There are multiple first mounting holes, third mounting holes, and fifth mounting holes, and they are provided in a one-to-one correspondence.

[0035] Wherein, the first bolt passes through the first mounting hole and the third mounting hole in sequence to fix the first connector 6 and the third connector 9, or the first bolt passes through the first mounting hole and the fifth mounting hole in sequence to fix the first connector 6 and the fifth connector 11.

[0036] This application enables a detachable connection between the first pipe 3, the third pipe 5, and the ASME nozzle 8 through the connection between flanges, and the flanges can provide a sealing effect to improve the accuracy of the measurement.

[0037] Furthermore, the first connector 6, the third connector 9, and the fifth connector 11 are circular structures.

[0038] Furthermore, this application also includes: a second bolt. The second connecting member 7, the fourth connecting member 10, and the sixth connecting member 12 are all flanges. The second connecting member 7 is provided with a second mounting hole, the fourth connecting member 10 is provided with a fourth mounting hole, and the sixth connecting member 12 is provided with a sixth mounting hole.

[0039] The second bolt passes through the second mounting hole and the fourth mounting hole in sequence to fix the second connector 7 and the fourth connector 10, or the second bolt passes through the second mounting hole and the sixth mounting hole in sequence to fix the second connector 7 and the sixth connector 12. The number of the second mounting hole, the fourth mounting hole and the sixth mounting hole is multiple and they are set one-to-one.

[0040] This application enables a detachable connection between the second pipe 4, the fourth pipe 15, and the ASME nozzle 8 through the connection between flanges, and the flanges can provide a sealing effect to improve the accuracy of the measurement.

[0041] Furthermore, the second connector 7, the fourth connector 10, and the sixth connector 12 are circular structures.

[0042] The working process of this invention is as follows: During normal system operation, the third connector 9 and the fourth connector 10 of the third pipe 5 are connected to the first connector 6 and the second connector 7, respectively, so that the first pipe 3, the third pipe 5, and the second pipe 4 sequentially form a passage, enabling normal system operation. When unit performance testing is required, the third connector 9 and the fourth connector 10 of the third pipe 5 are disconnected from the first connector 6 and the second connector 7, respectively. Then, the ASME nozzle 8 is placed between the first pipe 3 and the second pipe 4. Next, the fifth connector 11 of the ASME nozzle 8 is connected to the first connector 6, and the sixth connector 12 of the ASME nozzle 8 is connected to the second connector 7, so that the first pipe 3, the ASME nozzle 8, and the second pipe 4 sequentially form a passage.

[0043] In summary, the embodiments of the present invention provide a condensate flow measurement device, which, through the detachable setting of the ASME nozzle 8, allows a power plant to construct two or more units at the same time to purchase only one set of ASME flow nozzles, and allows multiple units to share one set of ASME flow nozzles when performance tests of different units are carried out in different time periods.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A condensate flow rate measuring device, characterized in that, include: The system includes a low-pressure heater, a deaerator, a first pipe, a second pipe, a third pipe, a first connector, a second connector, an ASME nozzle, a flow orifice plate, a tee, a fourth pipe, a fifth pipe, a first check valve, a second check valve, and a first bolt. The first end of the first pipe is connected to the low-pressure heater, and the second end of the first pipe is connected to the first connector. The first end of the second pipe is connected to the second connector, and the second end of the second pipe is connected to the deaerator. The third pipe has a third connector that can be detachably connected to the first connector and a fourth connector that can be detachably connected to the second connector at opposite ends; the ASME nozzle has a fifth connector that can be detachably connected to the first connector and a sixth connector that can be detachably connected to the second connector at opposite ends; the flow orifice plate is disposed on the second pipe; the first end of the tee is connected to the second pipe; the second end of the tee is connected to the first end of the fourth pipe; the third end of the tee is connected to the first end of the fifth pipe; the second end of the fourth pipe is connected to the deaerator; the second end of the fifth pipe is connected to the deaerator. The first check valve is disposed on the fourth pipe and is configured to allow condensate to flow from the second pipe to the fourth pipe while preventing condensate from flowing in the opposite direction; the second check valve is disposed on the fifth pipe and is configured to allow condensate to flow from the second pipe to the fifth pipe while preventing condensate from flowing in the opposite direction. The first connector, the third connector, and the fifth connector are all flanges; the first connector is provided with a first mounting hole; the third connector is provided with a third mounting hole; and the fifth connector is provided with a fifth mounting hole. Wherein, the first bolt passes through the first mounting hole and the third mounting hole in sequence to fix the first connector and the third connector, or the first bolt passes through the first mounting hole and the fifth mounting hole in sequence to fix the first connector and the fifth connector.

2. The condensate flow rate measuring device according to claim 1, characterized in that, The first connector, the third connector, and the fifth connector are circular structures.

3. The condensate flow rate measuring device according to claim 1, characterized in that, Also includes: The second bolt; the second connecting member, the fourth connecting member, and the sixth connecting member are all flanges; the second connecting member is provided with a second mounting hole; the fourth connecting member is provided with a fourth mounting hole; the sixth connecting member is provided with a sixth mounting hole; The second bolt passes through the second mounting hole and the fourth mounting hole in sequence to fix the second connector and the fourth connector, or the second bolt passes through the second mounting hole and the sixth mounting hole in sequence to fix the second connector and the sixth connector.

4. The condensate flow rate measuring device according to claim 1, characterized in that, The second connector, the fourth connector, and the sixth connector are circular structures.

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