CN207366045U - A kind of coal-burning power plant's level measurement device - Google Patents
A kind of coal-burning power plant's level measurement device Download PDFInfo
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- CN207366045U CN207366045U CN201721242552.9U CN201721242552U CN207366045U CN 207366045 U CN207366045 U CN 207366045U CN 201721242552 U CN201721242552 U CN 201721242552U CN 207366045 U CN207366045 U CN 207366045U
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- measuring cylinder
- water level
- level measuring
- measurement device
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Abstract
The utility model discloses a kind of coal-burning power plant's level measurement device, including tested container, water level measuring cylinder and guided wave radar water-level gauge, water level measuring cylinder is connected by probe tube with tested container, the bottom of water level measuring cylinder is welded with discharge tube, discharge tube outlet lower section is equipped with funnel and blow-off pipe, guided wave radar water-level gauge is installed on water level measuring cylinder by flange, guided wave radar water-level gauge includes controller, radar sensor, wireless communication module, waveguide pipe and waterproof case, waveguide pipe is by water level measuring cylinder top open part insertion water level measuring cylinder, waveguide pipe is connected with radar sensor, controller is connected with DCS system.The utility model uses the level measurement device being made of water level measuring cylinder and guided wave radar water-level gauge, water level in tested container is measured, it make use of electromagnetic wave principle to measure water level, improve measure data precision, ensure the economical operation and safety in production of steam turbine.
Description
Technical field
It the utility model is related to a kind of coal-burning power plant's level measurement device.
Background technology
At present, water level protection and adjusting are to ensure the important indicator of Steam Turbine in Fire Power Plant normal operation, water level protection
The safety and economic operation of unit is beneficial to, advantageously reduces cost of electricity-generating, improves the economy of unit operation.Existing simulation
It is to use equalizing reservoir principle to measure level measurement device, comparing water column is established, using the differential pressure transmitter of 3051 type of Rosemount
Measure.Differential pressure transmitter measurement water level shortcoming has：(1) container or transmitter just put into operation, and positive pressure side not yet condenses out foot
Enough condensation waters, measurement result is meaningless at this time；(2) pressure in container reduces suddenly, and water boiling point reduces, and causes positive pressure sidepiece
Divide water column boiling rapid evaporation, measurement result is not allowed；(3) there is air column in positive pressure side ducts, measurement shows that water level often has sawtooth waveforms
It is dynamic；(4) have ensured that water level is shown correctly, it is necessary to positive pressure side progress water filling after the overhaul life；(5) in container during negative pressure, measurement
As a result easily there is error.Existing switching value level measuring uses magnetic floating ball formula water level switch, and machine is affected using the buoyancy of water
Tool float movement, electromagnetic wand on float, by magnetostatic field principle, the conducting of magnetic reed switch contact, wherein, there are following for float switch
Shortcoming：(1) after long-time use, floating drum inner wall gradually can adhere to impurity and cause floating ball bite water level float switch, float
The repdocutbility of float switch definite value can be caused to be deteriorated after ball bite, even more so that floating ball cannot be acted or resetted in time, influence to join
Lock, the regular event of protection；(2) after float switch breaks down, cannot generally judge at the first time, it is necessary to which others are sentenced
Broken strip part comprehensive descision is；(3) installation site of float switch is generally nearer from tested container, easily influenced be subject to high temperature and
Cause aging circuit, oxidation；(4) precision of float switch and reliability are unstable.
Often reported by mistake in conclusion existing water protective device exists, malfunction, cause real-time measuring data not
Accurately deficiency.Therefore, it is still to be solved for how designing a kind of coal-burning power plant's level measurement device that can accurately measure water level
Technical problem.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of coal-burning power plant's level measurement device,
Using the level measurement device being made of water level measuring cylinder and guided wave radar water-level gauge, water level in tested container is measured,
Electromagnetic wave principle is make use of, solves the problems, such as measurement accuracy from principle by temperature, pressure and Effects of Density, and water level is surveyed
Graduated cylinder is connected by probe tube with tested container, and guided wave radar water-level gauge is arranged on water level measuring cylinder, avoids being subject to high temperature shadow
Ring and cause aging circuit, the deficiency of oxidation, improve measure data precision, ensure that the economical operation of steam turbine and safety are raw
Production.
Technical solution is used by the utility model：
A kind of coal-burning power plant's level measurement device, including tested container, water level measuring cylinder and guided wave radar water-level gauge, it is described
The barrel upper and lower part of water level measuring cylinder is respectively welded probe tube, and the water level measuring cylinder passes through probe tube and tested container
Connection, the bottom of the water level measuring cylinder are welded with discharge tube, and discharge tube outlet lower section is equipped with funnel and blow-off pipe, described
Blow-off pipe is connected with funnel bottom, and the guided wave radar water-level gauge is installed on water level measuring cylinder by flange, the guided wave thunder
Include controller, radar sensor, wireless communication module, waveguide pipe and waterproof case up to water-level gauge, the controller, radar pass
Sensor and wireless communication module are arranged on the inside of waterproof case, the radar sensor, wireless communication module respectively with control
Device interconnects, and one end of the waveguide pipe is inserted into water level measuring cylinder by water level measuring cylinder top open part, the waveguide pipe
The other end be connected with radar sensor, the controller is connected by shielded cable with DCS system.
Further, the probe tube uses stainless steel gauge pipe.
Further, the probe tube is equipped with valve of sampling.
Further, the intracavity diameter of the probe tube is 1~1.5 times of the cavity radius of water level measuring cylinder.
Further, blowdown valve is equipped with the discharge tube, the junction of the water level measuring cylinder and discharge tube is set
It is useful for the strainer of filtering.
Further, the guided wave radar water-level gauge further includes the display panel being connected with controller.
Further, the guided wave radar water-level gauge further includes 485 communication interfaces and HART interfaces being connected with controller.
Further, the guided wave radar water-level gauge further includes wireless hand operator.
Further, the inner surface of the water level measuring cylinder is equipped with Teflon figure layer.
Further, companion flange, the bottom of the guided wave radar water-level gauge are provided with the top of the water level measuring cylinder
Instrument flange is provided with, the companion flange and instrument flange are bolted to connection, the companion flange and instrument flange
Between be provided with gasket.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model uses the level measurement device being made of water level measuring cylinder and guided wave radar water-level gauge, to quilt
Water level measures in xylometer, make use of electromagnetic wave principle, solves measurement accuracy from principle by temperature, pressure and density
The problem of influence, and water level measuring cylinder is connected by probe tube with tested container, and guided wave radar water-level gauge is arranged on water level survey
On graduated cylinder, avoid being influenced be subject to high temperature and cause aging circuit, the deficiency of oxidation, improve measure data precision, ensure steamer
The economical operation and safety in production of machine；
(2) the guided wave radar water-level gauge that the utility model uses is since its maintenance is simple, performance is high, precision is high, reliability
Good, long lifespan, has obvious advantage, there is provided the reliability of measuring signal, can be adapted for most of quilts compared with transmitter
Xylometer；Guided wave radar water-level gauge is additionally provided with external apparatus interface, and more preferable support is provided for diagnostic function；
(3) water level measuring cylinder that the utility model uses is simple in structure, only comprising a communicating pipe, without having to worry about pressure wave
Water level caused by dynamic or negative pressure is not allowed, thus be especially suitable for it is low plus, the level measuring of the negative-pressure container such as condenser；
(4) the guided wave radar water-level gauge that the utility model uses has visual display panel, being capable of real-time display liquid
Position, it is easier to failure judgement source and phenomenon of the failure.
Brief description of the drawings
Fig. 1 is level measurement device structure diagram in coal-burning power plant's disclosed in the utility model embodiment；
Wherein, 1, tested container, 2, water level measuring cylinder, 3, guided wave radar water-level gauge, 4, probe tube, 5, valve of sampling
Door, 6, discharge tube, 7, blowdown valve, 8, display panel.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
In a kind of typical embodiment of the application, as shown in Figure 1, there is provided a kind of coal-burning power plant's level measuring dress
Put, which includes tested container 1, water level measuring cylinder 2 and guided wave radar water-level gauge 3, the barrel of the water level measuring cylinder 2
Upper and lower part is respectively welded probe tube 4, and the water level measuring cylinder 2 is connected by probe tube 4 with tested container 1, the water
The bottom of position measuring cylinder 2 is welded with discharge tube 6, and the outlet of discharge tube 6 lower section is equipped with funnel and blow-off pipe, the blow-off pipe and
Funnel bottom connects, and the guided wave radar water-level gauge 3 is installed on water level measuring cylinder 2 by flange, the guided wave radar water level
Meter 3 includes controller, radar sensor, wireless communication module, waveguide pipe and waterproof case, the controller, radar sensor
The inside of waterproof case is arranged on wireless communication module, the radar sensor, wireless communication module are mutual with controller respectively
Be connected, one end of the waveguide pipe by water level measuring cylinder top open part insertion water level measuring cylinder, the waveguide pipe it is another
One end is connected with radar sensor, and the controller is connected by shielded cable with DCS system.Shielded cable uses
KVVP4X1.5 shielded cables.
In the above-described embodiments, the probe tube 4 uses stainless steel gauge pipe, and the intracavity diameter of probe tube 4 is that water level is surveyed
1~1.5 times of the cavity radius of graduated cylinder, in addition, probe tube 4 is equipped with valve 5 of sampling.
In the above-described embodiments, blowdown valve 7, the water level measuring cylinder 2 and discharge tube 6 are equipped with the discharge tube 6
Junction is provided with the strainer for filtering.
On the basis of above-described embodiment, guided wave radar water-level gauge described in one embodiment of the invention 3 is further included and controlled
The display panel 8 of device connection processed.The guided wave radar water-level gauge 3 further includes 485 communication interfaces and HART being connected with controller
Interface, easy to be connected with external equipment.
The guided wave radar water-level gauge 3 further includes wireless hand operator.Water level is demarcated by wireless hand operator, passes through display surface
Plate shows real time water level, completes measurement task, uploads data to administrative department.
In the above-described embodiments, the inner surface of the water level measuring cylinder 2 is equipped with Teflon figure layer.
In the above-described embodiments, the top of the water level measuring cylinder 2 is provided with companion flange, the guided wave radar water-level gauge
3 bottom is provided with instrument flange, and the companion flange and instrument flange are bolted to connection, the companion flange and instrument
Gasket is provided between table flange.Guided wave radar water-level gauge is connected with water level measuring cylinder by flange, can so be reached
The purpose of fast assembling-disassembling.
As shown in Figure 1, the utility model proposes coal-burning power plant's level measurement device in use, first by the one of probe tube
End is welded on tested container, and the other end of probe tube is welded on water level measuring cylinder, then, by the guided wave radar water-level gauge
With water level measuring cylinder by flanged joint, and it is fixed by bolts, guided wave radar water-level gauge is connected by shielded cable and DCS system
Connect.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, on the basis of the technical solution of the utility model, ability
Field technique personnel need not make the creative labor the various modifications that can be made or deformation still in the protection model of the utility model
Within enclosing.
Claims (10)
1. a kind of coal-burning power plant's level measurement device, it is characterized in that, including tested container, water level measuring cylinder and guided wave radar water level
Meter, the barrel upper and lower part of the water level measuring cylinder are respectively welded probe tube, the water level measuring cylinder by probe tube with
Tested container connects, and the bottom of the water level measuring cylinder is welded with discharge tube, and discharge tube outlet lower section is equipped with funnel and row
Dirt pipe, the blow-off pipe are connected with funnel bottom, and the guided wave radar water-level gauge is installed on water level measuring cylinder by flange, institute
Stating guided wave radar water-level gauge includes controller, radar sensor, wireless communication module, waveguide pipe and waterproof case, the control
Device, radar sensor and wireless communication module are arranged on the inside of waterproof case, the radar sensor, wireless communication module point
Do not interconnected with controller, one end of the waveguide pipe is inserted into water level measuring cylinder by water level measuring cylinder top open part, institute
The other end for stating waveguide pipe is connected with radar sensor, and the controller is connected by shielded cable with DCS system.
2. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the probe tube uses stainless steel instrument
Table pipe.
3. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the probe tube is equipped with sampling one
Secondary valve.
4. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the intracavity diameter of the probe tube is
1~1.5 times of the cavity radius of water level measuring cylinder.
5. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, blowdown is equipped with the discharge tube
Valve, the junction of the water level measuring cylinder and discharge tube are provided with the strainer for filtering.
6. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the guided wave radar water-level gauge also wraps
Include the display panel being connected with controller.
7. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the guided wave radar water-level gauge also wraps
Include 485 communication interfaces and HART interfaces being connected with controller.
8. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the guided wave radar water-level gauge also wraps
Include wireless hand operator.
9. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the inner surface of the water level measuring cylinder
Equipped with Teflon figure layer.
10. coal-burning power plant's level measurement device according to claim 1, it is characterized in that, the top of the water level measuring cylinder
Companion flange is provided with, the bottom of the guided wave radar water-level gauge is provided with instrument flange, the companion flange and instrument flange
It is bolted to connection, gasket is provided between the companion flange and instrument flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721242552.9U CN207366045U (en) | 2017-09-26 | 2017-09-26 | A kind of coal-burning power plant's level measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721242552.9U CN207366045U (en) | 2017-09-26 | 2017-09-26 | A kind of coal-burning power plant's level measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207366045U true CN207366045U (en) | 2018-05-15 |
Family
ID=62350135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721242552.9U Active CN207366045U (en) | 2017-09-26 | 2017-09-26 | A kind of coal-burning power plant's level measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207366045U (en) |
-
2017
- 2017-09-26 CN CN201721242552.9U patent/CN207366045U/en active Active
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