CN207142885U - The manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining - Google Patents

Abstract

It the utility model is related to waste-water recovering treater technical field, it is a kind of manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining, it includes low temperature sampling frame, collector pipe, water tank, outfall sewer and the ion exchange column of at least one, samples the outlet of drainpipe and the outlet of instrument drainpipe and is connected with the import of collector pipe.The utility model reasonable and compact in structure, volume of equipment is small, floor space is small, construction cost is few, transformation difficulty is small, it may be provided in thermal power plant's steam water sampling, it is easy to operate, suitable for production scene, water sample is after simple process, it can fill into boiler circuit and recycle, by being recycled to the recycling of sampling rack draining, the make-up water percentage of unit can be reduced, realize the reasonable recycling of water, simultaneously the water in water tank can also select ultrapure water machine handle after between steam water sampling laboratory ultra-pure water be provided meet routine use, so make it that the utility model purposes is more extensive.

Description

Manual recovery and treatment device for low-temperature sampling rack drainage of steam-water system in thermal power plant

technical field

The utility model relates to the technical field of waste water recycling and processing devices, and relates to a manual recycling and processing device for draining water from a low-temperature sampling frame of a steam-water system in a thermal power plant.

Background technique

In order to avoid corrosion and fouling of the unit and ensure the safe and stable operation of the unit, the thermal power plant must strengthen the supervision of the quality of steam and water. , closed cooling water and other water samples, after cooling, lead to the low temperature sampling rack, and the low temperature sampling rack is divided into two channels, one is used for online real-time monitoring, and the other is used for manual sampling experiment comparison, in order to ensure the timeliness of the experimental results , Accuracy, and continuity, the water samples leading to the low-temperature sampling rack should be guaranteed to be continuous, and the water samples led to the low-temperature sampling rack after the experiment are discharged to industrial wastewater.

According to the requirements of GB/T 12145-2016 "Water Vapor Quality Standards for Thermal Power Generation Units and Steam Power Equipment", for units greater than 15.6Mpa, the hydrogen conductivity of steam and feed water should be less than 0.15μs/cm, and the hydrogen conductivity of condensed water should be less than 0.30μs /cm, the conductance of boiler water should be less than 15μs/cm, it can be seen that during normal operation, the quality of soda water is better; and according to relevant regulations, the flow rate of each sampling tube should be controlled at 400-700ml/min, assuming the flow rate of a single sampling tube 400ml/min, the sampling tube used for manual experiment comparison is calculated as 9 pieces, the water volume of the sampling rack for manual experiment comparison is about 5 tons/day, plus the displacement of the online instrument, the water volume of a single low-temperature sampling rack It is about 10 tons/day; due to the good water quality and large amount of water, if it is discharged into industrial wastewater, the conductivity of industrial wastewater is often greater than 1000μs/cm, which shows that its maximum value cannot be exerted. If it is recycled, after simple Purify the water to meet the requirements of demineralized water, and refill it into the soda water system to play its true value. However, there is currently no device that can recycle the water discharged from the low temperature sampling rack of the soda water system of thermal power plants.

Contents of the invention

The utility model provides a manual recovery and treatment device for draining water from a low-temperature sampling rack of a steam-water system in a thermal power plant, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the water discharged from the low-temperature sampling rack of the steam-water system in a thermal power plant cannot be recycled and processed at present. device problem.

The technical scheme of the utility model is realized through the following measures: a manual recovery and treatment device for the drainage of low-temperature sampling rack in the steam-water system of a thermal power plant, including a low-temperature sampling rack, the low-temperature sampling rack includes a manual sampling group and an online instrument group, and the manual sampling group includes The sampling drain pipe and the sampling pipe arranged on the sampling drain pipe, the online instrument group includes the meter drain pipe and the measuring instrument arranged on the meter drain pipe, it also includes a water collection pipe, a water tank, a water outlet main pipe and at least one ion exchange column , the outlet of the sampling drain pipe and the outlet of the instrument drain pipe are connected with the inlet of the water collecting pipe, the outlet end of the water collecting pipe is located in the water tank, and a liquid level gauge capable of monitoring the liquid level in the water tank is arranged on the water tank, and the outlet of the water tank The water delivery pipe to be treated is connected to the inlet of each ion exchange column respectively, and a power pump is connected in series on the water delivery pipe to be treated, and the water outlet of each ion exchange column is respectively connected to the inlet end of the water outlet main pipe. The outlet end of the main water outlet pipe is respectively connected with a sampling pipeline and a water outlet pipeline, and valves are connected in series on the sampling pipeline, the water outlet pipeline and the outlet end of each ion exchange column.

Below is the further optimization or/and improvement to above-mentioned utility model technical scheme:

The above-mentioned thermal power plant steam-water system low-temperature sampling rack drainage manual recovery treatment device also includes an ultra-pure water machine, and the water delivery pipe to be treated behind the power pump is connected with a pure water machine pipeline, and the other end of the pure water machine pipeline is connected to the The inlet of the ultra-pure water machine is connected, and a valve is connected in series on the water delivery pipe to be treated after the pipeline to the pure water machine, and a valve is connected in series on the pipeline to the pure water machine.

The outlet of the above-mentioned sampling drain pipe and the outlet of the instrument drain pipe are connected with the inlet of the water collecting pipe through latex tubes.

The outlet end of the water outlet main pipe is also connected with a self-circulation pipe, the other end of the self-circulation pipe is connected with the water tank, and a valve is connected in series with the self-circulation pipe.

In the above-mentioned manual recovery and treatment device for the low-temperature sampling rack drainage of the steam-water system of the thermal power plant, an overflow pipe is arranged on the upper part of the water tank.

The utility model has reasonable and compact structure, small equipment volume, small floor area, low construction cost, and low difficulty in transformation. It can be installed in the steam-water sampling room of thermal power plants. It is easy to operate and suitable for production sites. After simple treatment of water samples, It can be replenished into the soda water system for reuse. By recycling and reusing the drainage of the sampling rack, the water replenishment rate of the unit can be reduced, and the water can be reused reasonably. At the same time, the water in the water tank can also be treated by an ultrapure water machine for The soda sampling room laboratory provides ultrapure water to meet daily use, which makes the utility model more widely used.

Description of drawings

Accompanying drawing 1 is the technological structure schematic diagram of the preferred embodiment of the present utility model.

The codes in the drawings are: 1 is the sampling drain pipe, 2 is the sampling pipe, 3 is the instrument drain pipe, 4 is the measuring instrument, 5 is the water collection pipe, 6 is the water tank, 7 is the ion exchange column, 8 is the liquid level gauge , 9 is the water delivery pipe to be treated, 10 is the power pump, 11 is the water outlet main pipe, 12 is the sampling pipeline, 13 is the water outlet pipeline, 14 is the valve, 15 is the ultrapure water machine, 16 is the water removal machine pipeline , 17 is a latex pipe, 18 is a self-circulation pipe, and 19 is an overflow pipe.

Detailed ways

The utility model is not limited by the following examples, and the specific implementation manner can be determined according to the technical scheme of the utility model and actual conditions.

In this utility model, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout method of the accompanying drawing 1 of the specification, such as: the positional relationship of upper, lower, left, right, etc. is based on the specification It is determined by the layout direction of the attached drawing.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described:

As shown in accompanying drawing 1, this thermal power plant steam-water system low-temperature sampling rack drainage manual recovery processing device includes a low-temperature sampling rack, and the low-temperature sampling rack includes a manual sampling group and an online instrument group. The sampling pipe 2 on the pipe 1, the online instrument group includes an instrument drain pipe 3 and a measuring instrument 4 arranged on the instrument drain pipe 3, which also includes a water collection pipe 5, a water tank 6, a water outlet main pipe 11 and at least one ion exchange column 7. Both the outlet of the sampling drain pipe 1 and the outlet of the instrument drain pipe 3 are connected to the inlet of the water collection pipe 5, and the outlet end of the water collection pipe 5 is located in the water tank 6, and the water tank 6 is provided with a device capable of monitoring the liquid level in the water tank 6. The liquid level gauge 8, the outlet of the water tank 6 are respectively connected with the inlet of each ion exchange column 7 through the water delivery pipe 9 to be treated, and a power pump 10 is connected in series on the water delivery pipe 9 to be treated, and each ion exchange column The water outlet of 7 is respectively connected with the inlet end of water outlet main pipe 11, and the outlet end of water outlet main pipe 11 is connected with sampling pipeline 12 and water outlet pipeline 13 respectively, on sampling pipeline 12 and water outlet pipeline 13 and each Valves 14 are connected in series at the outlet ends of the ion exchange columns 7 . When the utility model includes at least two or three or four ion-exchange columns 7, it can be operated in a "useful and ready-to-use" mode, so that if the ion-exchange columns 7 in production need to be maintained or replaced , the standby ion exchange column 7 can be switched to the operating process, and the sampling line 12 is set to facilitate the determination of the water quality of the water treated by the ion exchange column 7 at any time. When water is measured, the valve 14 on the sampling line 12 can be opened to collect a water sample. If the measured water quality is unqualified, the ion exchange column 7 should be replaced in time.

The specific recycling process of the utility model is as follows: water samples such as condensed water, deaerator, economizer, furnace water, saturated steam, superheated steam, reheated steam, internal cooling water, closed cooling water, etc. (including manual experiment comparison water samples and online instrument discharge water samples), drained into the water collection pipe 5, and then the recovered water samples enter the water tank 6 through the water collection pipe 5, and the water tank 6 is equipped with a liquid level gauge 8, and the liquid level reaches a certain level. After the height is high, the water in the water tank 6 can be sent to the ion exchange column 7 by the power pump 10 for processing. After the water quality is qualified, the purified water will be delivered to the condensate water tank through the outlet pipeline 13 for continued use.

The utility model can reduce the water replenishment rate of the unit and realize the rational reuse of water through the recovery, treatment and reuse of the drainage of the sampling rack.

The utility model has the advantages of small volume, small floor area, low construction cost and low difficulty in transformation. It can be installed in the steam-water sampling room of thermal power plants. It is easy to operate and suitable for production sites. After simple treatment, the water samples can be added to the steam-water system. internal reuse,

According to actual needs, the above-mentioned thermal power plant steam-water system low-temperature sampling rack drainage manual recovery treatment device can be further optimized or/and improved:

As shown in accompanying drawing 1, this thermal power plant steam-water system low-temperature sampling rack drainage manual recovery treatment device also includes an ultrapure water machine 15, and the water-to-be-treated delivery pipe 9 behind the power pump 10 is communicated with a pure water machine pipeline 16 , the other end of the pure water machine pipeline 16 is communicated with the inlet of the ultrapure water machine 15, and a valve 14 is connected in series on the water delivery pipe 9 to be treated after the pure water machine pipeline 16, and a valve 14 is connected in series to the pure water machine A valve 14 is connected in series on the pipeline 16 . The water in the water tank 6 can be selected to be treated by the deion exchange column 7 as the make-up water of the condensate water tank, or can be selected to be processed by the ultrapure water machine 15 to provide ultrapure water for the soda sampling room laboratory to meet daily use, so that this Utility models are widely used.

As shown in FIG. 1 , the outlet of the sampling drain pipe 1 and the outlet of the meter drain pipe 3 are connected to the inlet of the water collecting pipe 5 through the latex tube 17 . The water sample is led to the water collection pipe 5 through the latex tube 17. The purpose of choosing the latex pipe 17 is to facilitate the introduction of the water sample into the water collection pipe 5. The second purpose is to freely select the recovered water sample. If it becomes worse, it can be introduced into the drainage ditch matching the sampling rack, and finally discharged into industrial wastewater without recycling it.

As shown in accompanying drawing 1, the outlet end of the outlet main pipe 11 is also connected with a self-circulation pipe 18, and the other end of the self-circulation pipe 18 is connected with the water tank 6, and a valve 14 is connected in series on the self-circulation pipe 18. When the water quality of the water treated by the ion exchange column 7 is not up to standard, the valve 14 on the sampling pipeline 12 and the outlet pipeline 13 can be closed, and the valve 14 on the self-circulation pipe 18 can be opened, and the substandard water can pass through the self-circulation Pipe 18 returns in the water tank 6 to continue processing, avoiding the waste of water.

As shown in accompanying drawing 1, overflow pipe 19 is set on the top of water tank 6. The outlet end of overflow pipe 19 is connected in the gutter, avoids due to the negligence of personnel, does not process the water sample in the water tank 6 in time, causes the water sample in the water tank 6 to overflow and soak the sampling room and cause an accident.

All valves in the utility model are manual valves.

The above technical features constitute the best embodiment of the utility model, which has strong adaptability and best implementation effect, and non-essential technical features can be increased or decreased according to actual needs to meet the needs of different situations.

Claims (9)

1. a kind of manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining, including low temperature sampling frame, low temperature take Sample rack includes manual sampling group and in-line meter group, and manual sampling group includes sampling drainpipe and is arranged on sampling drainpipe Probe tube, in-line meter group include instrument drainpipe and the measuring instrumentss being arranged on instrument drainpipe, it is characterised in that also wrap Collector pipe, water tank, outfall sewer and the ion exchange column of at least one are included, samples the outlet of drainpipe and going out for instrument drainpipe Mouth is connected with the import of collector pipe, and the port of export of collector pipe is located in water tank, and water can be monitored by being provided with water tank The liquid level gauge of liquid level in case, the outlet of water tank are connected by import of the accessing pending water delivery pipe respectively with every ion exchange column It is logical, it is serially connected with kinetic pump in accessing pending water delivery pipe, enters respectively with outfall sewer on the delivery port of every ion exchange column Mouth end is connected, and sampling line and outlet pipeline has been respectively communicated with the port of export of outfall sewer, in sampling line and outlet pipe On road and the port of export of every ion exchange column is serially connected with valve.

2. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 1, its feature It is also to include ultrapure water machine, is communicated with water purification machine pipeline in the accessing pending water delivery pipe after kinetic pump, removes water purification machine The other end of pipeline is connected with the import of ultrapure water machine, is serially connected with the accessing pending water delivery pipe after removing water purification machine pipeline Valve, valve is serially connected with water purification machine pipeline is removed.

3. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 1 or 2, it is special Sign is that sample the outlet of drainpipe and the outlet of instrument drainpipe is connected with the import of collector pipe by emulsion tube.

4. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 1 or 2, it is special Levy and be on the port of export of outfall sewer to be also communicated with self-loopa pipe, the other end of self-loopa pipe is connected with water tank, is following certainly Valve is serially connected with endless tube.

5. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 3, its feature It is on the port of export of outfall sewer to be also communicated with self-loopa pipe, the other end of self-loopa pipe is connected with water tank, in self-loopa Valve is serially connected with pipe.

6. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 1 or 2, it is special Sign is to set overflow pipe on the top of water tank.

7. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 3, its feature It is to set overflow pipe on the top of water tank.

8. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 4, its feature It is to set overflow pipe on the top of water tank.

9. the manual recycling and processing device of thermal power plant's boiler circuit low temperature sampling frame draining according to claim 5, its feature It is to set overflow pipe on the top of water tank.