CN215492592U - Vacuum measurement sampling device of condenser - Google Patents

Vacuum measurement sampling device of condenser Download PDF

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Publication number
CN215492592U
CN215492592U CN202121460992.8U CN202121460992U CN215492592U CN 215492592 U CN215492592 U CN 215492592U CN 202121460992 U CN202121460992 U CN 202121460992U CN 215492592 U CN215492592 U CN 215492592U
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China
Prior art keywords
sampling
condenser
pressure
header
vacuum
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CN202121460992.8U
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Chinese (zh)
Inventor
禹治坤
马克
韩国强
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Shangan Power Plant of Huaneng Power International Inc
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Shangan Power Plant of Huaneng Power International Inc
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Abstract

The utility model relates to a vacuum measurement sampling device of a condenser, which comprises a sampling header arranged in the condenser, wherein the lower end of the sampling header is communicated with a plurality of squirrel cage probes, the squirrel cage probes are arranged at the throat position in the condenser, the upper end of the sampling header is connected with a pressure switch and a pressure transmitter through a sampling pipe, and the pressure switch and the pressure transmitter are positioned outside the condenser; the sampling tube is provided with the ball valve, so that the accuracy and the reliability of the pressure measurement of the condenser are improved.

Description

Vacuum measurement sampling device of condenser
Technical Field
The utility model belongs to the technical field of pressure measurement, and particularly relates to a vacuum measurement sampling device of a condenser.
Background
The condenser is a heat exchanger for condensing the exhaust steam of the steam turbine into water, and is also called a water re-condenser. The condenser is mainly used in a steam turbine power device and is divided into a water-cooling condenser and an air-cooling condenser. The condenser can condense the exhaust steam of the turbine into water for reuse by the boiler, and can establish vacuum and maintain the vacuum at the exhaust steam part of the turbine.
A condenser of a No. 3 unit of a Huaneng power plant is provided with a plurality of pressure transmitters and pressure switches, and all measuring points are sampled from the vicinity of one point of the condenser by three sampling pipelines, so that the following problems exist:
1. the independent sampling of the sampling pipelines causes the deviation of the pressure value measured by each sampling pipeline, and the true value cannot be determined;
2. the condenser has a large volume, samples from a point nearby, and cannot effectively reflect the real pressure of the condenser.
3. The sampling mode is not standardized, so that the vacuum detection deviation is caused, and the energy-saving and high-efficiency operation of the unit is not facilitated.
In view of the current situation, a pressure measurement sampling device with high accuracy and reliability of condenser pressure measurement needs to be developed.
Disclosure of Invention
The utility model aims to provide a vacuum measuring and sampling device of a condenser, which improves the reliability of pressure measurement of the condenser.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the sampling device comprises a sampling header arranged in the condenser, wherein the lower end of the sampling header is communicated with a plurality of squirrel cage probes, the squirrel cage probes are arranged at the throat position in the condenser, the upper end of the sampling header is connected with a pressure switch and a pressure transmitter through a sampling pipe, and the pressure switch and the pressure transmitter are positioned outside the condenser;
the sampling tube is provided with a ball valve.
Furthermore, the sampling header is connected with the squirrel cage probe through a pressure guiding pipe, and one squirrel cage probe is connected with the sampling header through one pressure guiding pipe.
Further, the number of the squirrel cage probes is three.
Furthermore, the squirrel-cage probes are arranged at equal intervals and are positioned on the same horizontal plane.
Furthermore, the number of the pressure switches and the number of the pressure transmitters are respectively more than one.
Further, the sampling tube has a plurality of, and every sampling tube includes a first sampling tube and a plurality of second sampling tube, the both ends of first sampling tube are connected with sample header and second sampling tube respectively, the other end and the pressure switch or the pressure transmitter of second sampling tube are connected, are connected with at least one pressure switch in every sampling tube, and it is connected with pressure transmitter to have at least one second sampling tube in all sampling tubes.
Further, the ball valves include a first ball valve disposed on the first sampling pipe and a second ball valve disposed on each of the second sampling pipes.
Further, there are three sampling pipes, and first sampling pipe quantity has three, and every first sampling pipe is connected with two second sampling pipes.
Furthermore, one of the three sampling pipes is connected with a pressure switch and a pressure transmitter; the other of the three sampling tubes is connected with two pressure switches; the last of the three sampling tubes is connected with a pressure switch and a pressure transmitter.
Compared with the prior art, the utility model has the following beneficial effects:
according to the condenser pressure measurement device, the sampling header is arranged in the condenser, the squirrel cage probe is designed at the throat part of the condenser, the squirrel cage probe is connected with the sampling header through the pressure guiding pipe, the sampling header can truly reflect the average pressure state of the condenser, and three sampling pipelines are respectively led out from the sampling header for pressure measurement. The design of the utility model not only meets the requirement of independent sampling of the measuring points, but also ensures the representativeness and the authenticity of the measured data. The sampling header is designed in the condenser, so that measuring point misoperation and unit unplanned shutdown caused by header leakage can be effectively avoided, and the reliability of condenser pressure measurement is improved.
The utility model improves the pressure measurement mode, can truly and accurately reflect the vacuum pressure of the condenser, and avoids the defects of measuring point deviation and single sampling point. The operating personnel can ensure the stable operation of the condenser vacuum system through accurate vacuum measurement parameters, thereby achieving the purposes of energy conservation and consumption reduction.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the drawings: 1, a condenser; 2 sampling header; 3, a squirrel cage probe; 4, pressing a pipe; 5, a pressure switch; 6, a pressure transmitter; 7, sampling tube; 7-1 a first sampling tube; 7-2 a second sampling tube; 8 a first ball valve; 9 second ball valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention relates to a vacuum measurement sampling device for a condenser, which comprises a sampling header 2 disposed inside the condenser 1, wherein the sampling header 2 is a header for sampling, and the header is also called a header, which is a container.
The lower end of the sampling header 2 is communicated with a plurality of squirrel cage probes 3, the squirrel cage probes 3 are arranged at the throat position inside the condenser 1, the upper end of the sampling header 2 is connected with a pressure switch 5 and a pressure transmitter 6 through a sampling tube 7, and the pressure switch 5 and the pressure transmitter 6 are positioned outside the condenser 1;
and a ball valve is arranged on the sampling tube 7.
Squirrel cage probe 3 is latticed structure, squirrel cage probe 3 is used for obtaining the gas of the throat position department of condenser 1 inside, 3 vacuum sample of a plurality of squirrel cage probes that the sampling header 2 will be located condenser throat position are joined together, the inside vacuum of header has representativeness, with the inside vacuum of accurate detection condenser, rethread sampling tube 7 transmits for pressure switch 5 and pressure transmitter 6, pressure switch 5, pressure transmitter 6 is used for detecting the vacuum in the sampling header 2, realize that the accurate of condenser vacuum measures demonstration and vacuum alarm, the guard action.
The sampling header 2 is connected with the squirrel cage probe 3 through a pressure guiding pipe 4, and the squirrel cage probe 3 is connected with the sampling header 2 through the pressure guiding pipe 4. The squirrel-cage probe 3 sends the obtained vacuum degree at the throat position inside the condenser 1 into the sampling header 2 through the pressure guiding pipe 4. The arrangement method can ensure that the leakage point inside is absorbed, namely, even if the sampling header 2 leaks to have the leakage point, the leakage point also leaks inside, and the vacuum measurement does not generate large deviation.
The number of the squirrel cage probes 3 is three.
The squirrel-cage probes 3 are arranged at equal intervals and are positioned on the same horizontal plane. Therefore, multipoint sampling is achieved, independent sampling of measuring points is met, and representativeness and authenticity of measured data are guaranteed.
The sampling positions of the utility model are taken at different positions of the throat part of the condenser, so that the real pressure of the condenser can be effectively reflected.
The number of the pressure switches 5 and the number of the pressure transmitters 6 are respectively more than one.
The sampling tube 7 has a plurality of, and every sampling tube 7 includes a first sampling tube 7-1 and a plurality of second sampling tube 7-2, the both ends of first sampling tube 7-1 are connected with sample header 2 and second sampling tube 7-2 respectively, the other end and pressure switch 5 or pressure transmitter 6 of second sampling tube 7-2 are connected, are connected with at least one pressure switch 5 in every sampling tube 7, and at least one second sampling tube 7-2 is connected with pressure transmitter 6 in all sampling tubes 7.
The ball valves include a first ball valve 8 provided on the first sampling pipe 7-1 and a second ball valve 9 provided on each second sampling pipe 7-2. Each first sampling pipe 7-1 is provided with a first ball valve 8, and each second sampling pipe 7-2 is provided with a second ball valve 9. The ball valve is used for preventing the condensed water from blocking, and the ball valve is selected instead of a needle valve, and each pipeline can be isolated independently, so that the maintenance is convenient.
The number of the sampling tubes 7 is three, the number of the first sampling tubes 7-1 is three, and each first sampling tube 7-1 is connected with two second sampling tubes 7-2.
In the utility model, three sampling pipelines are respectively led out from the sampling header for pressure measurement. The three sampling tubes 7 are respectively connected with the following combinations: 1. a pressure switch 5 and a pressure transmitter 6; 2. two pressure switches 5; 3. a pressure switch 5 and a pressure transmitter 6. As shown in FIG. 1, the leftmost first sampling tube 7-1 is connected with a pressure switch 5 and a pressure transmitter 6, the rightmost first sampling tube 7-1 is connected with a pressure switch 5 and a pressure transmitter 6, and the middle first sampling tube 7-1 is connected with two pressure switches 5.
The utility model not only meets the independent sampling of the measuring points, but also ensures the representativeness and the authenticity of the measured data. By adopting the above mode, both improved unit condenser vacuum measurement's accuracy, guaranteed the reliability again, can be applied to thermal power factory condenser vacuum measurement.
The utility model has low cost, and the cost of the utility model is estimated by taking the structure as an example in the attached figure 1: 6 ten thousand yuan of vacuum pressure transmitter, pressure switch; 1 ten thousand yuan of sampling header and sampling pipeline; 1 ten thousand yuan of sampling valve and installation accessories; the total amount of the catalyst is 8 ten thousand yuan.
According to the condenser, the sampling header is arranged in the condenser, the squirrel cage probe is designed at the throat part of the condenser, the squirrel cage probe 3 is connected with the sampling header 2 through the pressure guiding pipe 4, the sampling header 2 can truly reflect the average pressure state of the condenser 1, and three sampling pipelines are respectively led out from the sampling header 2 and used for pressure measurement. The design of the utility model not only meets the requirement of independent sampling of the measuring points, but also ensures the representativeness and the authenticity of the measured data. The sampling header is designed in the condenser, so that measuring point misoperation and unit unplanned shutdown caused by header leakage can be effectively avoided, and the reliability of condenser pressure measurement is improved.
The utility model improves the pressure measurement mode, can truly and accurately reflect the vacuum pressure of the condenser, and avoids the defects of measuring point deviation and single sampling point. The operating personnel can ensure the stable operation of the condenser vacuum system through accurate vacuum measurement parameters, thereby achieving the purposes of energy conservation and consumption reduction.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Those skilled in the art can readily devise many other varied embodiments that will still fall within the scope of the appended claims without the use of the teachings of this invention.

Claims (9)

1. The vacuum measurement sampling device of the condenser is characterized by comprising a sampling header (2) arranged inside the condenser (1), wherein the lower end of the sampling header (2) is communicated with a plurality of squirrel cage probes (3), the squirrel cage probes (3) are arranged at the throat position inside the condenser (1), the upper end of the sampling header (2) is connected with a pressure switch (5) and a pressure transmitter (6) through a sampling pipe (7), and the pressure switch (5) and the pressure transmitter (6) are positioned outside the condenser (1);
and a ball valve is arranged on the sampling tube (7).
2. The vacuum measurement sampling device of the condenser is characterized in that the sampling header (2) is connected with the squirrel cage probe (3) through a pressure guiding pipe (4), and the squirrel cage probe (3) is connected with the sampling header (2) through the pressure guiding pipe (4).
3. Vacuum measuring and sampling device for a condenser, according to claim 2, characterized in that there are three said squirrel cage probes (3).
4. The vacuum measurement sampling device of the condenser is characterized in that the squirrel cage probes (3) are arranged at equal intervals and are positioned on the same horizontal plane.
5. The vacuum measurement sampling device of the condenser according to claim 1, wherein the number of the pressure switch (5) and the number of the pressure transmitter (6) are respectively more than one.
6. The vacuum measurement sampling device of the condenser is characterized in that the sampling tubes (7) are provided with a plurality of sampling tubes, each sampling tube (7) comprises a first sampling tube (7-1) and a plurality of second sampling tubes (7-2), two ends of each first sampling tube (7-1) are respectively connected with the sampling header (2) and the second sampling tube (7-2), the other end of each second sampling tube (7-2) is connected with the pressure switch (5) or the pressure transmitter (6), at least one pressure switch (5) is connected in each sampling tube (7), and at least one second sampling tube (7-2) in all sampling tubes (7) is connected with the pressure transmitter (6).
7. The vacuum measuring and sampling device of a condenser according to claim 6,
the ball valves include a first ball valve (8) provided on the first sampling pipe (7-1) and a second ball valve (9) provided on each second sampling pipe (7-2).
8. The vacuum measurement sampling device of the condenser is characterized in that the number of the sampling pipes (7) is three, the number of the first sampling pipes (7-1) is three, and each first sampling pipe (7-1) is connected with two second sampling pipes (7-2).
9. The vacuum measurement sampling device of a condenser according to claim 8, characterized in that one of the three sampling tubes (7) is connected with a pressure switch (5) and a pressure transmitter (6); the other one of the three sampling tubes (7) is connected with two pressure switches (5); the last of the three sampling tubes (7) is connected with a pressure switch (5) and a pressure transmitter (6).
CN202121460992.8U 2021-06-29 2021-06-29 Vacuum measurement sampling device of condenser Active CN215492592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121460992.8U CN215492592U (en) 2021-06-29 2021-06-29 Vacuum measurement sampling device of condenser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121460992.8U CN215492592U (en) 2021-06-29 2021-06-29 Vacuum measurement sampling device of condenser

Publications (1)

Publication Number Publication Date
CN215492592U true CN215492592U (en) 2022-01-11

Family

ID=79723169

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121460992.8U Active CN215492592U (en) 2021-06-29 2021-06-29 Vacuum measurement sampling device of condenser

Country Status (1)

Country Link
CN (1) CN215492592U (en)

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