CN210922933U - Pressure detection device for outlet main pipe of fixed cold water pump - Google Patents
Pressure detection device for outlet main pipe of fixed cold water pump Download PDFInfo
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- CN210922933U CN210922933U CN201921875924.0U CN201921875924U CN210922933U CN 210922933 U CN210922933 U CN 210922933U CN 201921875924 U CN201921875924 U CN 201921875924U CN 210922933 U CN210922933 U CN 210922933U
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- pressure transmitter
- pressure gauge
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Abstract
The utility model provides a decide female pipe pressure detection device of cold water pump export, including deciding cold water pump, cold water pump water pipe, manometer valve, manometer, pressure transmitter valve, pressure transmitter, decide the cold water pump and include that 2A decides the cold water pump, 2B decides the cold water pump, the cold water pump water pipe includes cold water pump water pipe I, cold water pump water pipe II, the manometer valve includes manometer valve I, manometer valve II, the manometer includes manometer I, manometer II, the pressure transmitter valve includes pressure transmitter primary door, pressure transmitter secondary door, pressure transmitter primary door sets up on the cold water pump water pipe I, pressure transmitter secondary door input is connected pressure transmitter primary door output, pressure transmitter with pressure transmitter secondary door output is connected. The utility model discloses a pressure transmitter adds the sample secondary door, can realize deciding the function that cold water pump export female pipe pressure hangs down to ally oneself with the starting pump.
Description
Technical Field
The utility model relates to a check out test set field, concretely relates to decide female pipe pressure measurement of cold water pump export device.
Background
The stator cooling water system is one of three accessory systems of an engine, the operation reliability of the stator cooling water system is directly related to safety of a generator, the pressure of a main pipe of an outlet of a fixed cold water pump of No. 2 machine of Datangong thermal power plant is originally designed into a combined starting standby pump with a low pressure switch (less than or equal to 0.65 MPa), and because the pressure switch is directly arranged at a tee joint between an outlet of an A, B fixed cold water pump and the main pipe, the combined starting standby fixed cold water pump with the low outlet pressure of the fixed cold water pump appears for several times under the influence of pipeline vibration and sampling position factors.
Disclosure of Invention
In order to solve the problems, the pressure of the outlet main pipe of the fixed cold water pump is continuously and reliably monitored, the utility model provides a pressure detection device of the outlet main pipe of the fixed cold water pump, which comprises a fixed cold water pump, a cold water pump water pipe, a pressure gauge valve, a pressure gauge, a pressure transmitter valve and a pressure transmitter, wherein the fixed cold water pump comprises a 2A fixed cold water pump and a2B fixed cold water pump which are arranged in parallel in the horizontal direction, the cold water pump water pipe comprises a cold water pump water pipe I and a cold water pump water pipe II, the cold water pump water pipe I is arranged horizontally, a water inlet is connected with a water outlet of the 2A fixed cold water pump, the cold water pump water pipe II is arranged in an L shape, a water inlet is connected with a water outlet of the 2B fixed cold water pump, and a water; the pressure gauge valve comprises a pressure gauge valve I and a pressure gauge valve II, the pressure gauge valve I is arranged on the left side of the 2A fixed cold water pump, and the pressure gauge valve II is arranged on the left side of the 2B fixed cold water pump; the pressure gauge comprises a pressure gauge I and a pressure gauge II, the pressure gauge I is connected with the pressure gauge valve I, and the pressure gauge II is connected with the pressure gauge valve II; pressure transmitter valve includes primary door of pressure transmitter, the secondary door of pressure transmitter, primary door of pressure transmitter sets up on the cold water pump water pipe I, the contact site is for deciding the female pipe pressure detection measuring point of cold water pump export, the secondary door input of pressure transmitter is connected primary door output of pressure transmitter, pressure transmitter with secondary door output of pressure transmitter is connected, and drop15 is sent into to pressure transmitter's analog signal, through logical judgement (≦ 0.65 MPa) output switch volume (have the quality to judge), realizes deciding the function that cold water pump export female pipe pressure hangs down to ally oneself with and opens the stand-by pump.
Furthermore, the pressure gauge I and the pressure gauge II are positioned in the same vertical direction.
Further, the pressure gauge I adopts a 20MKFOOCP504 pressure gauge.
Further, the pressure gauge II adopts a 20MKFOOCP505 pressure gauge.
Furthermore, install the buffer tube additional between pressure transmitter secondary door and the pressure transmitter primary door, cool off the liquid in cold water pump water pipe I and the cold water pump water pipe II to alleviate the pressure fluctuation that liquid flow produced.
Furthermore, the output end of the primary door of the pressure transmitter is additionally provided with a sewage discharge door, so that the pressure transmitter is convenient to disassemble in maintenance.
Further, the pressure transmitter secondary door adopts a J23W-64P DN10 needle valve.
Further, the pressure transmitter adopts a 3051GP2A2B21BD1 pressure transmitter.
Compared with the prior art, the utility model discloses the beneficial effect who gains is:
the pressure switch of the outlet of the fixed cold water pump is changed into a pressure transmitter, a sampling secondary door is added, a sampling pipeline is transformed and fixed, an analog quantity signal of the transmitter is sent into drop15, and the switching value (quality judgment) is output through logic judgment (less than or equal to 0.65 MPa), so that the function of starting the backup pump under the condition of low pressure of the outlet main pipe of the fixed cold water pump is realized.
Drawings
FIG. 1 is a schematic diagram of a pressure detection device for an outlet main pipe of a fixed cold water pump;
FIG. 2 is a schematic view of a primary door of a transmitter of a pressure detection device for an outlet main pipe of a fixed cold water pump;
corresponding reference characters indicate:
the system comprises a 1.2A fixed cold water pump, a 2.2B fixed cold water pump, a 3 cold water pump water pipe I, a 4 cold water pump water pipe II, a 5 pressure gauge valve I, a 6 pressure gauge valve II, a 7 pressure gauge I, a 8 pressure gauge II, a 9 pressure transmitter primary door, a 10 pressure transmitter secondary door, a 11 pressure transmitter, a 12 buffer pipe and a 13 blow-down door.
Detailed Description
For better understanding of the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings, and it should be noted that the terms "left", "right", "upper", "lower", "middle", etc. mentioned in the present embodiment refer to the terms of position or orientation relationship, which are only provided according to the accompanying drawings of the specification, and are not specific limitations of the present invention.
With reference to the accompanying drawings 1 and 2, the utility model relates to a decide female pipe pressure detection device of cold water pump export, including deciding cold water pump, cold water pump water pipe, manometer valve, manometer, pressure transmitter valve, pressure transmitter 11, decide the cold water pump and set up on the left, including two 2A that horizontal direction parallel arrangement decide cold water pump 1, 2B decide cold water pump 2, the cold water pump water pipe includes cold water pump water pipe I3, cold water pump water pipe II 4, cold water pump water pipe I3 level sets up, the water inlet with 2A decide cold water pump 1 delivery port connection, cold water pump water pipe II 4 is "L" type setting, the water inlet with 2B decide cold water pump 2 delivery port connection, the delivery port inserts cold water pump water pipe I3; the pressure gauge valve comprises a pressure gauge valve I5 and a pressure gauge valve II 6, the pressure gauge valve I5 is arranged on the left side of the 2A fixed cold water pump 1, and the pressure gauge valve II 6 is arranged on the left side of the 2B fixed cold water pump 2; the pressure gauge comprises a pressure gauge I7 and a pressure gauge II 8, the pressure gauge I7 is connected with the pressure gauge valve I5, and the pressure gauge II 8 is connected with the pressure gauge valve II 6; pressure transmitter valve includes pressure transmitter secondary door 9, pressure transmitter secondary door 10, pressure transmitter secondary door 9 sets up on the cold water pump water pipe I3, the contact site is for deciding the female pipe pressure detection measuring point of cold water pump export, pressure transmitter secondary door 10 input is connected pressure transmitter secondary door 9 output, pressure transmitter 11 with pressure transmitter secondary door 10 output is connected, and drop15 is sent into to pressure transmitter 11's analog signal, through logical judgement (≦ 0.65 MPa) output switch volume (there is the quality to judge), realizes deciding the function that cold water pump export female pipe pressure hangs down to ally oneself with and starts the stand-by pump.
In a preferred but nonlimiting embodiment of the invention, pressure gauge i 7 and pressure gauge ii 8 are in the same vertical direction.
In a preferred, but nonlimiting embodiment, the pressure gauge i 7 is a 20 mkfcop 504 pressure gauge.
In a preferred, but nonlimiting embodiment, the pressure gauge ii 8 is a 20 mkfcp 505 pressure gauge.
In a preferred but nonlimiting embodiment of the present invention, buffer tube 12 is installed between primary door 9 of the pressure transmitter and secondary door 10 of the pressure transmitter, and it is right to cool the liquid in water pipe i 3 and water pipe ii 4 of the cold water pump and to slow down the pressure fluctuation generated by the flow of the liquid.
In a preferred but nonlimiting embodiment of the present invention, a blowdown door 13 is additionally installed below the output end of the primary door 9 of the pressure transmitter, and the pressure transmitter 11 is disconnected in the convenience of maintenance.
In a preferred but nonlimiting embodiment of the invention, the pressure transmitter secondary door 10 is a J23W-64P DN10 needle valve.
In a preferred, but nonlimiting, embodiment of the present invention, pressure transmitter 11 is a 3051GP2A2B21BD1 pressure transmitter.
The pressure detection of the original primary pipe of the fixed cold water pump is realized by setting a pressure switch for adjustment, the water pipe I3 of the cold water pump is the primary pipe of the fixed cold water pump, a water inlet is directly connected with the 2A fixed cold water pump 1, the pressure gauge I7 is used for directly detecting the water flow pressure in the 2A fixed cold water pump 1, when the pressure of the detected flowing water flow is smaller and lower than a standard value, a low pressure signal of the primary pipe of the outlet of the fixed cold water pump can be transmitted, so that the signal is transmitted to the position of the standby fixed cold water pump 2B fixed cold water pump 2, the normal cooling operation of the fixed cold water pump is influenced to a certain extent, and the generator fault is easily caused, the utility model adjusts the original pipeline, adopts the pressure transmitter 11 to replace the pressure switch, adds the secondary door 10 of the pressure transmitter at the middle position between the primary door 9 of the pressure transmitter 11 and the secondary door 9 of the pressure transmitter, and adds a buffer tube, and an analog quantity signal of the pressure transmitter 11 is sent to drop15, so that the function of starting the backup pump by the pressure of the outlet main pipe of the fixed cold water pump in a low-pressure connection mode is realized.
In the above description, it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A pressure detection device for a fixed cold water pump outlet main pipe is characterized by comprising a fixed cold water pump, a cold water pump water pipe, a pressure gauge valve, a pressure gauge, a pressure transmitter valve and a pressure transmitter, wherein the fixed cold water pump comprises a 2A fixed cold water pump and a2B fixed cold water pump which are arranged in parallel in the horizontal direction, the cold water pump water pipe comprises a cold water pump water pipe I and a cold water pump water pipe II, the cold water pump water pipe I is horizontally arranged, a water inlet is connected with a water outlet of the 2A fixed cold water pump, the cold water pump water pipe II is arranged in an L shape, the water inlet is connected with a water outlet of the 2B fixed cold water pump, and the water outlet is connected to the cold water pump water pipe I; the pressure gauge valve comprises a pressure gauge valve I and a pressure gauge valve II, the pressure gauge valve I is arranged on the left side of the 2A fixed cold water pump, and the pressure gauge valve II is arranged on the left side of the 2B fixed cold water pump; the pressure gauge comprises a pressure gauge I and a pressure gauge II, the pressure gauge I is connected with the pressure gauge valve I, and the pressure gauge II is connected with the pressure gauge valve II; the pressure transmitter valve comprises a pressure transmitter primary door and a pressure transmitter secondary door, the pressure transmitter primary door is arranged on the cold water pump water pipe I, the contact part is a pressure detection measuring point of a fixed cold water pump outlet main pipe, the input end of the pressure transmitter secondary door is connected with the output end of the pressure transmitter primary door, the pressure transmitter is connected with the output end of the pressure transmitter secondary door, an analog quantity signal of the pressure transmitter is sent into the drop15, and the function of starting the backup pump with the fixed cold water pump outlet main pipe in a low pressure linkage mode is achieved.
2. The device for detecting the pressure of the outlet main pipe of the fixed cold water pump as claimed in claim 1, wherein the pressure gauge I and the pressure gauge II are in the same vertical direction.
3. The pressure detection device for the outlet main pipe of the fixed-cold water pump as claimed in claim 2, wherein the pressure gauge I is a 20MKFOOCP504 pressure gauge.
4. The pressure detection device for the outlet main pipe of the fixed-cold water pump as claimed in claim 3, wherein the pressure gauge II is a 20MKFOOCP505 pressure gauge.
5. The device as claimed in claim 4, wherein a buffer tube is installed between the primary door of the pressure transmitter and the secondary door of the pressure transmitter.
6. The pressure detection device for the outlet main pipe of the fixed cold water pump as claimed in claim 5, wherein a blow-down door is additionally arranged at the output end of the primary door of the pressure transmitter.
7. The device as claimed in claim 6, wherein the secondary door of the pressure transmitter is a needle valve of J23W-64P DN 10.
8. The device for detecting the pressure of the outlet main pipe of the fixed cold water pump as claimed in claim 7, wherein the pressure transmitter is a 3051GP2A2B21BD1 pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921875924.0U CN210922933U (en) | 2019-11-04 | 2019-11-04 | Pressure detection device for outlet main pipe of fixed cold water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921875924.0U CN210922933U (en) | 2019-11-04 | 2019-11-04 | Pressure detection device for outlet main pipe of fixed cold water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210922933U true CN210922933U (en) | 2020-07-03 |
Family
ID=71350420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921875924.0U Active CN210922933U (en) | 2019-11-04 | 2019-11-04 | Pressure detection device for outlet main pipe of fixed cold water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210922933U (en) |
-
2019
- 2019-11-04 CN CN201921875924.0U patent/CN210922933U/en active Active
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