CN207379787U - A kind of system for desulfuration and denitration measuring point switching device - Google Patents
A kind of system for desulfuration and denitration measuring point switching device Download PDFInfo
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- CN207379787U CN207379787U CN201721521787.1U CN201721521787U CN207379787U CN 207379787 U CN207379787 U CN 207379787U CN 201721521787 U CN201721521787 U CN 201721521787U CN 207379787 U CN207379787 U CN 207379787U
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- sampler
- way valve
- sampling
- flue
- desulfuration
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Abstract
The utility model discloses a kind of system for desulfuration and denitration measuring point switching device, including the first sampler, the second sampler, valve group control cabinet and controller；One end of first sampler and one end of the second sampler are respectively protruding into flue to be measured；Three-position four-way valve is provided in valve group control cabinet, samples passage and gassing pipe, the other end of the first sampler and the second sampler is connected respectively by pipeline with two interfaces of the one side of three-position four-way valve；One end of sampling passage and gassing pipe is connected respectively with two interfaces of the opposite side of three-position four-way valve, samples the other end connection sample tap of passage, the other end connection compressed gas source of gassing pipe；The control signal output of controller is connected with the control signal input on three-position four-way valve.The system for desulfuration and denitration measuring point switching device can make the first sampler and the regular alternate samples of the second sampler and cleaning, realize the continuity of sampling.
Description
Technical field
The heat-engine plant desulfurized denitration flue gas inspection technical field of the utility model is surveyed more particularly, to a kind of system for desulfuration and denitration
Point switching device.
Background technology
SO is detected in means of flue gas desulfurization of power plant denitrating system2、NOxGas is to be detected mostly using single-point single channel at present, due to
The filter of long-term sampling meeting blocking channel front end, it is therefore necessary to it is purged, however when purging requirement increases, it must
The phenomenon that continuity of measurement can so be made to be deteriorated, cause sampling process off and on, it can not realize continuous sampling.
Utility model content
To solve problem above, the purpose of this utility model is to provide a kind of system for desulfuration and denitration measuring point switching device,
Measuring point can be made to be switched fast in sampling and purging, so as to fulfill the continuity of sampling, improve the reliability of sampling test point.
In order to achieve the above object, the utility model is solved using following technical scheme.
The content of the utility model proposes a kind of system for desulfuration and denitration measuring point switching device, for the flue of examining system
On, which is characterized in that including the first sampler, the second sampler, valve group control cabinet and controller；The first sampling dress
The one end put and one end of second sampler are respectively protruding into the flue；Three are provided in the valve group control cabinet
The other end of four-way valve, sampling passage and gassing pipe, first sampler and second sampler passes through respectively
Pipeline is connected with two interfaces of the one side of the three-position four-way valve；One end of the sampling passage and the gassing pipe point
It is not connected with two interfaces of the opposite side of the three-position four-way valve, the other end connection sample tap of the sampling passage, institute
State the other end connection compressed gas source of gassing pipe；Control signal output, the control signal are provided on the controller
Output terminal is connected with the control signal input on the three-position four-way valve.
System for desulfuration and denitration measuring point switching device according to the present utility model, the first sampler and the second sampler
One end is respectively protruding into the flue of examining system, and convenient to be sampled out of flue, the first sampler and the second sampler are adjacent,
It can thus be assumed that its sample point is same sample point, the accuracy of sampling is not influenced；First sampler is sampled with second
The other end of device is connected respectively by pipeline with two interfaces of the one side of three-position four-way valve, samples passage and gassing pipe
One end be connected respectively with two interfaces of the opposite side of three-position four-way valve.
Specifically, when using the sampling of the first sampler, a ports of three-position four-way valve and d ends are controlled by controller
Mouth connection, b ports are connected with c ports, are connected at this point, the first sampler will pass through three-position four-way valve with sampling passage, cigarette
Flue gas in road is flowed out by sampling passage from sample tap, completes the sampling of flue gas；And the second sampler will pass through three four
Port valve is connected with gassing pipe, and the compressed gas source of gassing pipe other end connection blows to the second sampling by gassing pipe and fills
It puts, realizes the cleaning to the second sampler, prevent it from blocking.When the first sampler needs to clean, controller control
The a ports of three-position four-way valve processed are connected with c ports, and b ports are connected with d ports, and the first sampler will pass through three-position four-way valve
It is connected with gassing pipe, the compressed gas source of gassing pipe other end connection blows to the first sampler by gassing pipe, real
Now to the cleaning of the first sampler, prevent it from blocking；And at this point, the second sampler will pass through three-position four-way valve with taking
Sample passage is connected, and is sampled so as to be switched to by the second sampler；Hereby it is achieved that the first sampler and second
Sampler alternate samples and cleaning ensure that the continuity of sampling.
The system for desulfuration and denitration measuring point switching device of the utility model is simple in structure, and design is reasonable, and safe operation is simple, and
And the control of full automation can be realized by controller, make the first sampler and the regular alternate samples of the second sampler and
It cleans, realizes the continuity of sampling, improve the reliability and stability of sampling test point.
As preference, three-position three-way valve and pump-line, the 3-position-3-way are additionally provided in the valve group control cabinet
Valve is connected on the gassing pipe, is set on the three-position three-way valve there are one total interface and two support interfaces, described three
Total interface on triple valve is connected with the three-position four-way valve, on the three-position three-way valve a support interface and the compression
Source of the gas is connected, another support interface on the three-position three-way valve is connected with one end of the pump-line, the pumping
The other end of pipeline is connected with air exhauster.
As preference, the control signal input of the three-position three-way valve and the control signal input of the air exhauster
The control signal output with the controller is connected respectively.
System for desulfuration and denitration measuring point switching device according to the present utility model, three-position three-way valve are connected on gassing pipe,
Total interface e ends on three-position three-way valve are connected with the c ends of three-position four-way valve, at the first sampler or the second sampler
When the state of purging, the e ports of controller control three-position three-way valve are connected with f ports；When the first sampler or second take
When sampling device needs are switched to sampling state by cleaning state, the e ports of three-position three-way valve and g ends are controlled by controller first
Mouthful connection, at this point, the other end of gassing pipe is connected by three-position three-way valve with one end of pump-line, pump-line it is another
One end is connected with air exhauster, opens air exhauster, and the bleeding point that the compressed gas in gassing pipe has air exhauster is extracted out；Pass through again
Controller control three-position four-way valve switches over the working condition of the first sampler or the second sampler.Pump-line and
The setting of air exhauster ensure that the fume sample taken out in exhaust gases passes by the first probe tube or the second probe tube is continuous
's.
As preference, first sampler is identical with the second sampler structure, the first sampling dress
Put includes probe tube with second sampler, and one end of the probe tube is sampling end, and the other end is filter end, described
The sampling end of probe tube is radially into the inside of the flue, and the filter end of the probe tube passes through pipeline and the 3-position 4-way
Valve is connected, and filter is provided on the inside of the filter end of the probe tube.
System for desulfuration and denitration measuring point switching device according to the present utility model, the sampling end of probe tube are radially into flue
Inside, the convenient sampling to flue gas in flue；The inside of the filter end of probe tube sets filter, convenient in flue
Flue gas is filtered.
As preference, be set up in parallel on the tube wall of the flue there are two weld nipple, the weld nipple with it is described
It is connected on the inside of flue, first sampler and second sampler stretch into respectively from two weld nipples
In the flue.
System for desulfuration and denitration measuring point switching device according to the present utility model, weld nipple facilitate the first sampler and
Second sampler is fixed in flue.
Description of the drawings
The utility model is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 1 is a kind of structure diagram of embodiment of the system for desulfuration and denitration measuring point switching device of the utility model.
In Fig. 1：1 first sampler；101 filters；2 second samplers；3 valve group control cabinets；4 3-position 4-ways
Valve；5 three-position three-way valves；6 sampling passages；7 gassing pipes；8 sample taps；9 compressed gas sources；10 controllers；11 pump-lines；12
Air exhauster；13 weld nipples；14 bleeding points.
Specific embodiment
With reference to figure 1, system for desulfuration and denitration measuring point switching device according to the present utility model, for the flue of examining system
On, including the first sampler 1, the second sampler 2, valve group control cabinet 3 and controller 10；First sampler 1
One end and one end of second sampler 2 are respectively protruding into the flue；Three four are provided in the valve group control cabinet 3
The other end of port valve 4, sampling passage 6 and gassing pipe 7, first sampler 1 and second sampler 2 leads to respectively
Pipeline is crossed with two interfaces of the one side of the three-position four-way valve 4 to be connected；The sampling passage 6 and the gassing pipe 7
One end is connected respectively with two interfaces of the opposite side of the three-position four-way valve 4, and the other end connection of the sampling passage 6 takes
Sample mouth 8, the other end connection compressed gas source 9 of the gassing pipe 7；Control signal output is provided on the controller 10,
The control signal output is connected with the control signal input on the three-position four-way valve 4.
In the embodiment above, one end of the first sampler 1 and the second sampler 2 is respectively protruding into the cigarette of examining system
In road, convenient to be sampled out of flue, the first sampler 1 and the second sampler 2 are adjacent, it can thus be assumed that its sample point is same
The sample point of sample does not influence the accuracy of sampling；First sampler 1 and the second sampler 2 the other end passes through respectively
Pipeline is connected with two interfaces of the one side of three-position four-way valve 4, sample one end of passage 6 and gassing pipe 7 respectively with three
Two interfaces of the opposite side of four-way valve 4 are connected.
Specifically, when using the sampling of the first sampler 1, a ports of three-position four-way valve 4 are controlled by controller 10
It is connected with d ports, b ports are connected with c ports, at this point, the first sampler 1 will pass through three-position four-way valve 4 with sampling 6 phase of passage
It connects, the flue gas in flue is flowed out by sampling passage 6 from sample tap 8, completes the sampling of flue gas；And the second sampler 2 is just
It is connected by three-position four-way valve 4 with gassing pipe 7, the compressed gas source 9 of 7 other end of gassing pipe connection passes through gassing pipe 7
The second sampler 2 is blowed to, the cleaning to the second sampler 2 is realized, prevents it from blocking.When the first sampler 1 needs
When cleaning, controller 10 controls a ports of three-position four-way valve 4 to be connected with c ports, and b ports are connected with d ports, the first sampling
Device 1 will pass through three-position four-way valve 4 and be connected with gassing pipe 7, and the compressed gas source 9 of 7 other end of gassing pipe connection is by blowing
Feed channel 7 blows to the first sampler 1, realizes the cleaning to the first sampler 1, prevents it from blocking；And at this point, second
Sampler 2 will pass through three-position four-way valve 4 and be connected with sampling passage 6, be carried out so as to be switched to by the second sampler 2
Sampling；Hereby it is achieved that the first sampler 1 and 2 alternate samples of the second sampler and cleaning, ensure that the continuous of sampling
Property.
The system for desulfuration and denitration measuring point switching device of the utility model is simple in structure, and design is reasonable, and safe operation is simple, and
And the control of full automation can be realized by controller 10, the first sampler 1 and the second sampler 2 is made periodically alternately to take
The continuity of sampling is realized in sample and cleaning, improves the reliability and stability of sampling test point.
One embodiment according to the present utility model is additionally provided with three-position three-way valve 5 and pumping in the valve group control cabinet 3
Pipeline 11, the three-position three-way valve 5 are connected on the gassing pipe 7, and there are one total interfaces for setting on the three-position three-way valve 5
With two support interfaces, total interface on the three-position three-way valve is connected with the three-position four-way valve 4, the three-position three-way valve 5
On a support interface be connected with the compressed gas source 9, another support interface on the three-position three-way valve 5 and the pumping
One end of pipeline 11 is connected, and the other end of the pump-line 11 is connected with air exhauster 12.
One embodiment according to the present utility model, the control signal input of the three-position three-way valve 5 and the pumping
Control signal output of the control signal input of machine 12 respectively with the controller 10 is connected.
In the embodiment above, three-position three-way valve 5 is connected on gassing pipe 7, total interface e ends on three-position three-way valve with
The c ends of three-position four-way valve 4 are connected, when the first sampler 1 or the second sampler 2 are in purging state, controller 10
The e ports of control three-position three-way valve 5 are connected with f ports；When the first sampler 1 or the second sampler 2 are needed by cleaning
When state is switched to sampling state, the e ports for controlling three-position three-way valve 5 by controller 10 first are connected with g ports, at this point,
The other end of gassing pipe 7 is connected by three-position three-way valve with one end of pump-line 11, and the other end of pump-line 11 connects
Air exhauster 12 is connected to, air exhauster 12 is opened, the bleeding point 14 that the compressed gas in gassing pipe 7 has air exhauster 12 is extracted out；Again
By controller 10 three-position four-way valve 4 is controlled to switch over the working condition of the first sampler 1 or the second sampler 2.
The setting of pump-line 11 and air exhauster 12 ensure that is taken out in exhaust gases passes by the first probe tube or the second probe tube
Fume sample is continuous.
One embodiment according to the present utility model, 2 structure phase of first sampler 1 and second sampler
Together, first sampler 1 and second sampler 2 include probe tube, and one end of the probe tube is sampling end,
The other end is filter end, and the sampling end of the probe tube is radially into the inside of the flue, and the filter end of the probe tube is led to
It crosses pipeline with the three-position four-way valve 4 to be connected, filter is provided on the inside of the filter end of the probe tube.
In the embodiment above, the sampling end of probe tube is radially into the inside of flue, convenient that flue gas in flue is taken
Sample；The inside of the filter end of probe tube sets filter, convenient that flue gas in flue is filtered.
One embodiment according to the present utility model is set up in parallel on the tube wall of the flue there are two weld nipple 13,
The weld nipple 13 with being connected on the inside of the flue, distinguish by first sampler 1 and second sampler 2
It is stretched into from two weld nipples 13 in the flue.
In the embodiment above, weld nipple 13 facilitates is fixed on cigarette by the first sampler 1 and the second sampler 2
In feed channel.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
New spirit and scope.If in this way, these modification and variations of the utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these modification and variations.
Claims (5)
1. a kind of system for desulfuration and denitration measuring point switching device, for the flue of examining system, which is characterized in that including：
First sampler (1) and the second sampler (2), one end of first sampler (1) and second sampling
One end of device (2) is respectively protruding into the flue；
Valve group control cabinet (3), the valve group control cabinet (3) is interior to be provided with three-position four-way valve (4), sampling passage (6) and gas blow pipe
The other end of road (7), first sampler (1) and second sampler (2) passes through pipeline and described three respectively
Two interfaces of the one side of four-way valve (4) are connected；It is described sampling passage (6) and the gassing pipe (7) one end respectively with
Two interfaces of the opposite side of the three-position four-way valve (4) are connected, the other end connection sample tap of the sampling passage (6)
(8), the other end connection compressed gas source (9) of the gassing pipe (7)；
Controller (10), is provided with control signal output on the controller (10), the control signal output with it is described
Control signal input on three-position four-way valve (4) is connected.
2. system for desulfuration and denitration measuring point switching device according to claim 1, which is characterized in that the valve group control cabinet
(3) three-position three-way valve (5) and pump-line (11) are additionally provided in, the three-position three-way valve (5) is connected to the gassing pipe
(7) on, set on the three-position three-way valve (5) there are one total interface and two support interfaces, it is total on the three-position three-way valve (5)
Interface is connected with the three-position four-way valve (4), a support interface on the three-position three-way valve (5) and the compressed gas source
(9) it is connected, another support interface on the three-position three-way valve (5) is connected with one end of the pump-line (11), institute
The other end for stating pump-line (11) is connected with air exhauster (12).
3. system for desulfuration and denitration measuring point switching device according to claim 2, which is characterized in that the three-position three-way valve
(5) control signal input and the control with the controller (10) respectively of the control signal input of the air exhauster (12)
Signal output part is connected.
4. system for desulfuration and denitration measuring point switching device according to claim 1, which is characterized in that first sampler
(1) identical with the second sampler (2) structure, first sampler (1) and second sampler (2) wrap
Probe tube is included, one end of the probe tube is sampling end, and the other end is filter end, and the sampling end of the probe tube is radially into institute
The inside of flue is stated, the filter end of the probe tube is connected by pipeline with the three-position four-way valve (4), the probe tube
Filter (101) is provided on the inside of filter end.
5. system for desulfuration and denitration measuring point switching device according to claim 1, which is characterized in that on the tube wall of the flue
It is set up in parallel there are two weld nipple (13), with being connected on the inside of the flue, described first takes the weld nipple (13)
Sampling device (1) and second sampler (2) are stretched into from two weld nipples (13) in the flue respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721521787.1U CN207379787U (en) | 2017-11-15 | 2017-11-15 | A kind of system for desulfuration and denitration measuring point switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721521787.1U CN207379787U (en) | 2017-11-15 | 2017-11-15 | A kind of system for desulfuration and denitration measuring point switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207379787U true CN207379787U (en) | 2018-05-18 |
Family
ID=62332676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721521787.1U Expired - Fee Related CN207379787U (en) | 2017-11-15 | 2017-11-15 | A kind of system for desulfuration and denitration measuring point switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207379787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804515A (en) * | 2021-09-13 | 2021-12-17 | 浙江天地环保科技股份有限公司 | Chimney exhaust port SO of coal-fired power plant3Continuous sampling device and method |
-
2017
- 2017-11-15 CN CN201721521787.1U patent/CN207379787U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804515A (en) * | 2021-09-13 | 2021-12-17 | 浙江天地环保科技股份有限公司 | Chimney exhaust port SO of coal-fired power plant3Continuous sampling device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20191115 |