CN202887006U - Cutoff water supply control device for analysis meter - Google Patents
Cutoff water supply control device for analysis meter Download PDFInfo
- Publication number
- CN202887006U CN202887006U CN 201220603708 CN201220603708U CN202887006U CN 202887006 U CN202887006 U CN 202887006U CN 201220603708 CN201220603708 CN 201220603708 CN 201220603708 U CN201220603708 U CN 201220603708U CN 202887006 U CN202887006 U CN 202887006U
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- water
- solenoid valve
- cutout
- water supply
- sampling
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Abstract
The utility model discloses a cutoff water supply control device for an analysis meter. The cutoff water supply control device comprises a medium-pressure stop valve for a sample water sampling point, and a constant temperature device, wherein the sample water enters the analysis meter or an electrode flow cell through the medium-pressure stop valve and the constant temperature device; and the cutoff water supply control device is characterized by also comprising a sampling solenoid valve, a float flowmeter with a cutoff signal, a cutoff water supply solenoid valve, a cutoff water supply tank, a water tank water supply solenoid valve, a recovery water tank and a recovery water pump, wherein the sampling solenoid valve and the float flowmeter with the cutoff signal are connected to a pipeline behind the constant temperature device; the sampling solenoid valve is opened during normal sampling, the cutoff water supply solenoid valve is closed, and the cutoff water supply tank and the water tank water supply solenoid valve are connected in parallel to the pipeline; and when the sample water is cut off, the sampling solenoid valve is closed, and the cutoff water supply solenoid valve is opened. The aim of protecting the meter is fulfilled, the resources can be recycled, and the device has significance for stable operation of the analysis meter.
Description
Technical field
The utility model relates to a kind of analysis meter cutout water-replenishing control device, especially relates to a kind of device of taking a sample in the water treatment of power plant cycle chemistry analytic set that meets, specifically analysis meter when sample water stops, control device that can the automatic cut out moisturizing.
Background technology
Chemical supervision is the important step that ensures generating plant safety, economy, stable operation, is the working contents of chemical supervision to the supervision of Water Vapor Quality.The generating plant is continuously operation, actuating medium in the therrmodynamic system cyclic process, the degree of stability of water, vapour quality and the technical characterstic that the randomness of its pollution has been consisted of chemical supervision.The random case of Water Vapor Quality in the thermal procession is measured in supervision, to realize the overall process supervision to Water Vapor Quality.Chemical technology supervision require the performance on-line chemical monitoring instrument continuously, monitoring function and can eliminate careless omission, false declaration, subjective error and technical characterstic accurately and reliably timely.Simultaneously, the Monitoring Data that diagnosis of technique also requires chemical instruments to provide can play one's part to the full, and has the sign of deterioration to predict to Water Vapor Quality, contingent accident is forecast, and accident chases after hundred million and point out the guiding suggestions such as treatment measures.The measurement data of the analysis meter of on-line continuous operation can be accurately, safety puts into operation reliably, for improving the chemical supervision level, guarantees that safety and the economical operation of Turbo-generator Set equipment has great significance.Therefore, how making normal, stable, the reliability service of on-line chemical monitoring instrument is a very important job.
On-line chemical monitoring instrument is concentrated sampling rack, and common instrument has pH, conductivity table, silicon table, sodium table, dissolved oxygen table etc.Traditional instrument sampling mode is: enter analysis meter inside or electrode flow-through cell behind pressure cutoff valve, thermostat, reduction valve, filtrator, the low-pressure shutoff valve in the sample water process.Under normal circumstances, sample water flows continuously, and analysis meter works in the situation of periodic maintenance obtaining.When unit outage, just can not provide stable sample water for analysis meter.Considered situation about may cut off the water supply during the design of the flow cell of some analysis meter, the flow cell water inlet position is lower, and the water delivering orifice position is higher, thereby so that water sample is arranged in the flow cell always, electrode can be immersed in the water always.But in actual use, because a variety of causes can not ensure enough water samples in the flow cell, this serviceable life and measuring accuracy for analysis meter has larger impact, damages instrument electrode or internal measurement element when serious.
Summary of the invention
The utility model purpose is, proposes a kind of analysis meter cutout water-replenishing control device, can be when analysis meter normal specimens water cut, can replenish qualified water sample, guarantee that analysis meter is operated under the regular service conditions, prolonged the serviceable life of analysis meter, guarantee its measuring accuracy.
Technical solution of the present utility model is: analysis meter cutout water-replenishing control device, comprise middle pressure cutoff valve, the thermostat of sample water sampling spot, sample water through in enter analysis meter inside or electrode flow-through cell behind the pressure cutoff valve, thermostat; Other is provided with the sampling solenoid valve, band connects the suspended body flowmeter of cutout signal, the moisturizing solenoid valve that stops, cutout water supply tank, water tank moisturizing solenoid valve, return water tank, recovered water pump; Sampling solenoid valve and the pipeline of being with after the suspended body flowmeter that connects the cutout signal is connected on thermostat; During normal sampling, the sampling solenoid valve is opened, cutout moisturizing closed electromagnetic valve; Cutout water supply tank and water tank moisturizing solenoid valve are parallel to this pipeline; During the sample water cutout, the sampling closed electromagnetic valve, cutout moisturizing solenoid valve is opened, and has guaranteed that analysis meter continues to flow, and has reached the purpose of protection instrument.Analysis meter is safeguarded timing signal, can come cleaning electrode or gauge internal pipeline with the water source of cutout moisturizing.
Further, be provided with return water tank, sample water flows out pipeline after linking parsing instrument or the electrode flow-through cell.
Qualified sample water or demineralized water can be reclaimed so that recycling.In addition, this device can fully automatic operation, also can the blocked operation mode, and the manual intervention operation control method.
The beneficial effects of the utility model are: this is a kind of analysis meter cutout water-replenishing control device, can when the normal specimens water cut, can replenish qualified water sample, and can reclaim resource circulation utilization.Simultaneously, in conjunction with the appropriate design of auxiliary circuit, so that device fully can fully automatic operation, also can the blocked operation mode, the manual intervention operation control method.
Description of drawings
Fig. 1 is the utility model system construction drawing.
Embodiment
Fig. 1 is described, and sampling solenoid valve 1, band connect suspended body flowmeter 2, cutout moisturizing solenoid valve 3, cutout water supply tank 4, water tank moisturizing solenoid valve 5, return water tank 6, recovered water pump 7, sampling spot 8, the analysis meter 9 of cutout signal, thermostat 10.
The connection of complete analysis meter comprises that middle pressure cutoff valve, thermostat, reduction valve, filtrator and low-pressure shutoff valve are connected successively and connects, sample water through in enter analysis meter inside or electrode flow-through cell behind the pressure cutoff valve, thermostat.The present invention has increased sampling solenoid valve, band and has connect the suspended body flowmeter of cutout signal, the moisturizing solenoid valve that stops, cutout water supply tank, water tank moisturizing solenoid valve on the basis of existing equipment; Be connected to the suspended body flowmeter that band connects the cutout signal behind the sample water process sampling solenoid valve, be connected to analysis meter.And the water inlet of cutout moisturizing solenoid valve is provided by the cutout water supply tank, and pipeline is attempted by to be with after the suspended body flowmeter that connects the cutout signal, is connected to analysis meter.During normal sampling, the sampling solenoid valve is opened, cutout moisturizing closed electromagnetic valve.When suspended body flowmeter detects cutout, send the cutout contact point signal, with cutout moisturizing solenoid valve interlocking, the closed electromagnetic valve of taking a sample this moment, cutout moisturizing solenoid valve is opened.
According to the characteristics of instrument, the water source of cutout moisturizing adopts preferably demineralized water of water quality.The cutout water supply tank arranges water tank moisturizing solenoid valve, and with the level switch interlocking of water tank, when liquid level was low, water tank moisturizing solenoid valve was opened the beginning moisturizing, and when liquid level was high, water tank moisturizing closed electromagnetic valve stopped moisturizing.In order not waste resource, be provided with return water tank, qualified sample water or demineralized water are reclaimed, when analysis meter stops, be evacuated to the cutout water supply tank so that recycling with recovered water pump.The level switch interlocking of recovered water pump and return water tank.It should be noted that the instrument such as silicon table, sodium table need to add medicament when analytic sample water, so this part water can not be recycling, need directly discharging, when pipeline system design, need to consider.Because the water source of cutout moisturizing adopts preferably demineralized water of water quality, therefore safeguards timing signal at analysis meter, can come cleaning electrode or gauge internal pipeline with it.
During normal operation, the sampling solenoid valve is opened, cutout moisturizing closed electromagnetic valve.Enter analysis meter behind pressure cutoff valve, thermostat, reduction valve, filtrator, the low-pressure shutoff valve from the sample water process that sampling spot comes, analysis meter is in normal operating conditions.
When suspended body flowmeter detects cutout, send the cutout contact point signal, with cutout moisturizing solenoid valve interlocking.This moment the closed electromagnetic valve of taking a sample, cutout moisturizing solenoid valve is opened, by cutout water supply tank sampling water to analysis meter, thereby guaranteed that analysis meter is in always water state is arranged.Cutout water supply tank moisturizing solenoid valve, with the level switch interlocking of water tank, when liquid level was low, water tank moisturizing solenoid valve was opened the beginning moisturizing, and when liquid level was high, water tank moisturizing closed electromagnetic valve stopped moisturizing.And qualified sample water or demineralized water are recycled to return water tank, when analysis meter stops, are evacuated to the cutout water supply tank so that recycling with recovered water pump, reached the effect of making rational use of resources.
Claims (2)
1. analysis meter cutout water-replenishing control device is characterized in that comprising middle pressure cutoff valve, the thermostat of sample water sampling spot, sample water through in enter analysis meter inside or electrode flow-through cell behind the pressure cutoff valve, thermostat; It is characterized in that being provided with in addition the sampling solenoid valve, be with the suspended body flowmeter, cutout moisturizing solenoid valve, cutout water supply tank, water tank moisturizing solenoid valve, return water tank, the recovered water pump that connect the cutout signal; Sampling solenoid valve and the pipeline of being with after the suspended body flowmeter that connects the cutout signal is connected on thermostat; During normal sampling, the sampling solenoid valve is opened, cutout moisturizing closed electromagnetic valve; Cutout water supply tank and water tank moisturizing solenoid valve are parallel to this pipeline; During the sample water cutout, the sampling closed electromagnetic valve, cutout moisturizing solenoid valve is opened.
2. analysis meter cutout water-replenishing control device according to claim 1 is characterized in that being provided with return water tank, and sample water flows out pipeline after linking parsing instrument or the electrode flow-through cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603708 CN202887006U (en) | 2012-11-15 | 2012-11-15 | Cutoff water supply control device for analysis meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603708 CN202887006U (en) | 2012-11-15 | 2012-11-15 | Cutoff water supply control device for analysis meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202887006U true CN202887006U (en) | 2013-04-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603708 Expired - Lifetime CN202887006U (en) | 2012-11-15 | 2012-11-15 | Cutoff water supply control device for analysis meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202887006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180998A (en) * | 2020-10-09 | 2021-01-05 | 三门核电有限公司 | Method for on-line chemical analysis instrument water cut-off and water supplement |
-
2012
- 2012-11-15 CN CN 201220603708 patent/CN202887006U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180998A (en) * | 2020-10-09 | 2021-01-05 | 三门核电有限公司 | Method for on-line chemical analysis instrument water cut-off and water supplement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |