CN206281602U - A kind of differential pressure transmitter blowdown apparatus - Google Patents
A kind of differential pressure transmitter blowdown apparatus Download PDFInfo
- Publication number
- CN206281602U CN206281602U CN201621437185.3U CN201621437185U CN206281602U CN 206281602 U CN206281602 U CN 206281602U CN 201621437185 U CN201621437185 U CN 201621437185U CN 206281602 U CN206281602 U CN 206281602U
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- Prior art keywords
- pipe
- differential pressure
- pressure transmitter
- delivery pipe
- delivery
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Abstract
The utility model discloses a kind of differential pressure transmitter blowdown apparatus, it is related to the technical field of differential pressure transmitter, including the first check valve and the second check valve, the first water inlet and the first delivery port are provided with first check valve, wherein, first water inlet connects the positive pressure side sewage draining exit of differential pressure transmitter, and the first delivery port connects the first booster pump through the first delivery pipe, and first booster pump connects the first blow-off pipe；The second water inlet and the second delivery port are provided with second check valve, wherein, the second water inlet connects the negative pressure end sewage draining exit of differential pressure transmitter, and the second delivery port connects the second booster pump through the second delivery pipe, and second booster pump connects the second blow-off pipe；Differential pressure transmitter blowdown apparatus also include the 3rd delivery pipe, and the two ends of the 3rd delivery pipe connect the conveying initiating terminal of the first delivery pipe and the second delivery pipe, two-way valve is provided with the 3rd delivery pipe respectively.The utility model is easy to improve the blowdown automaticity of differential pressure transmitter.
Description
Technical field
The utility model is related to the technical field of differential pressure transmitter, and in particular to a kind of differential pressure transmitter blowdown apparatus.
Background technology
Pressure transmitter is generally divided into three types, i.e., general pressure transmitter, negative pressure transmitter and differential pressure transmitter, fire
Power plant it is relatively conventional have two kinds of general pressure transmitter and differential pressure transmitter.It is the dust that is contained due to measurement medium, grease, micro-
Little particle etc. can be deposited or deposited in pressure measuring valve in the connecting pipe of differential pressure transmitter, directly or indirectly influence differential pressure transporting
Device is measured, and is accomplished by carrying out blowdown to differential pressure transmitter when running into such case.Method for discharging pollution commonplace at present has two kinds：
1st, the direct blowdown of plug of differential pressure transmitter base is turned on；2nd, a sewage door is welded on connecting pipe, after carrying out related measure
Opening sewage door again carries out blowdown.
Thermal power plant needs various chemical substances to participate in chemical reaction when generating electricity or auxiliary equipment is run, the ammonia that such as prepared by ammonia station
The NOX (nitrogen oxides) that gas is used for during denitrating system removes flue gas, hydrogen prepared by hydrogen station is used to cool down engine, buckling of being on duty
When sending device to measure these poisonous, inflammable and explosive gases, common method for discharging pollution is just easy to make staff be exposed to these
In the middle of poisonous, flammable explosive gas, the staff of blowdown is poisoned or is occurred to explode and injure, cause thing of keeping the safety in production
Therefore.
The various blowdown apparatus for differential pressure transmitter, the sensor film for easily damaging in transmitter in the process of running
Piece, so as to damage differential pressure transmitter.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model aims to provide a kind of differential pressure transmitter blowdown apparatus,
The flexibility of pipeline blowdown is improved, influence of the blowdown apparatus to differential pressure transmitter internal structure is reduced.
To achieve the above object, the utility model is adopted the following technical scheme that：
A kind of differential pressure transmitter blowdown apparatus, including the first check valve and the second check valve, set on first check valve
The first water inlet and the first delivery port are equipped with, wherein, the first water inlet connects the positive pressure side sewage draining exit of differential pressure transmitter, and first goes out
The delivery pipe of the mouth of a river first connects the first booster pump, and first booster pump connects the first blow-off pipe；Set on second check valve
There are the second water inlet and the second delivery port, wherein, the second water inlet connects the negative pressure end sewage draining exit of differential pressure transmitter, the second water outlet
Mouth connects the second booster pump through the second delivery pipe, and second booster pump connects the second blow-off pipe；The differential pressure transmitter is filled with blowdown
Putting also includes the 3rd delivery pipe, and the two ends of the 3rd delivery pipe connect the conveying starting of the first delivery pipe and the second delivery pipe respectively
End, two-way valve is provided with the 3rd delivery pipe.
As a kind of improvement of the present utility model, first flow switch, first flow switch are provided with the first delivery pipe
With the first booster pump signal communication；Second flow switch, second flow switch and the second booster pump are provided with second delivery pipe
Signal communication.
As it is of the present utility model it is another improve, differential pressure transmitter blowdown apparatus also include threaded a pipe outside first and
Threaded a pipe outside second, wherein being threaded a pipe outside first is communicated in the first delivery pipe, the first delivery pipe is threaded a pipe outward outside connection through first
Boundary, this thread a pipe outside first on be provided with the first ball valve；Thread a pipe outside second and is communicated in the second delivery pipe, the second delivery pipe is through the
Connection of threading a pipe outside two is extraneous, this thread a pipe outside second on be provided with the second ball valve.
The beneficial effects of the utility model are：Power is provided by booster pump, by check valve, delivery pipe and blow-off pipe pair
Differential pressure transmitter carries out blowdown；When the conveyance conduit at differential pressure transmitter malleation end or negative pressure end is blocked, can be by the 3rd
The blow-off line of delivery pipe and the other end carries out blowdown；Flow switch is provided with delivery pipe to be carried out to the blowdown flow in pipeline
Monitoring, the first booster pump or the second booster pump are closed when blowdown flow reaches the flux lower limit of setting, it is to avoid pipeline occurs and blocks up
Supercharging is still carried out during plug, the parts such as the sensor diaphragm in differential pressure transmitter are caused damage；Easily in pipe when blocking
Pressure differential is produced between road, the danger that there is the part such as sensor diaphragm damaged in differential pressure transmitter, by setting outer siphunculus
Road can occur to connect conveyance conduit and the external world when pressure is uneven, reduce pressure differential；Also by ball valve and can thread a pipe to defeated outward
Pipeline is sent to be cleaned.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Reference：1st, the first check valve；11st, the first water inlet；12nd, the first delivery port；2nd, the second check valve；21st,
Two water inlets；22nd, the second delivery port；31st, the first delivery pipe；32nd, the second delivery pipe；41st, the first booster pump；42nd, the second supercharging
Pump；51st, the first blow-off pipe；52nd, the second blow-off pipe；6th, the 3rd delivery pipe；7th, two-way valve；81st, first flow switch；82nd, second
Flow switch；91st, first thread a pipe outward；92nd, second thread a pipe outward；101st, the first ball valve；102nd, the second ball valve.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：
As shown in figure 1, a kind of differential pressure transmitter blowdown apparatus, including the first check valve 1 and the second check valve 2, this
The first water inlet 11 and the first delivery port 12 are provided with one check valve 1, wherein, the connection differential pressure transmitter of the first water inlet 11
Positive pressure side sewage draining exit, the first delivery port 12 connects the first booster pump 41 through the first delivery pipe 31, first booster pump 41 connection the
One blow-off pipe 51, is provided with first flow switch 81 in the first delivery pipe 31, first flow switch 81 is believed with the first booster pump 41
Number connection；The second water inlet 21 and the second delivery port 22 are provided with second check valve 2, wherein, the second water inlet 21 is connected
The negative pressure end sewage draining exit of differential pressure transmitter, the second delivery port 22 connects the second booster pump 42 through the second delivery pipe 32, second increasing
Press pump 42 connects the second blow-off pipe 52, and second flow switch 82, second flow switch 82 and the are provided with the second delivery pipe 32
The signal communication of two booster pump 42；Differential pressure transmitter blowdown apparatus also include the 3rd delivery pipe 6, the two ends of the 3rd delivery pipe 6
The conveying initiating terminal of the first delivery pipe 31 and the second delivery pipe 32 is connected respectively, and two-way valve 7 is provided with the 3rd delivery pipe 6；
Differential pressure transmitter blowdown apparatus also to include thread a pipe outside first threads a pipe 92 outside 91 and second, wherein threading a pipe 91 outside first
It is communicated in the first delivery pipe 31, the first delivery pipe 31 is extraneous through 91 connections of threading a pipe outside first, this is threaded a pipe outside first and set on 91
It is equipped with the first ball valve 101；Thread a pipe outside second and 92 be communicated in the second delivery pipe 32, the second delivery pipe 32 is through threading a pipe 92 outside second
Connection is extraneous, and this to be threaded a pipe outside second and be provided with the second ball valve 102 on 92.
When the utility model is used, the positive pressure side row of the connection differential pressure transmitter of the first water inlet 11 on the first check valve 1
Dirty mouth, the second water inlet 21 on the second check valve 2 connects the negative pressure end sewage draining exit of differential pressure transmitter, when differential pressure transmitter is normal
During operation, the first check valve 1 and the second check valve 2 are closed；Switched in first flow and flow is set on 81/ second flow switch 82
Lower limit, when the positive pressure side of differential pressure transmitter or negative pressure end need to carry out blowdown, opens the He of the first 1/ second check valve of check valve 2
The booster pump 42 of first booster pump 41/ second, carries out blowdown；During blowdown, first flow switchs 81/ second flow and switchs 82 pairs
Blowdown flow in the delivery pipe 32 of first delivery pipe 31/ second is monitored, when blowdown flow reaches the flux lower limit of setting
Close the booster pump 42 of the first booster pump 41/ second, it is to avoid occur to still carry out supercharging during line clogging, in differential pressure transmitter
The parts such as sensor diaphragm cause damage.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (3)
1. a kind of differential pressure transmitter blowdown apparatus, it is characterised in that including the first check valve and the second check valve, described first
The first water inlet and the first delivery port are provided with check valve, wherein, the positive pressure side row of the first water inlet connection differential pressure transmitter
Dirty mouth, the first delivery port connects the first booster pump through the first delivery pipe, and first booster pump connects the first blow-off pipe；Described
The second water inlet and the second delivery port are provided with two check valves, wherein, the second water inlet connects the negative pressure end of differential pressure transmitter
Sewage draining exit, the second delivery port connects the second booster pump through the second delivery pipe, and second booster pump connects the second blow-off pipe；It is described
Differential pressure transmitter blowdown apparatus also include the 3rd delivery pipe, and the two ends of the 3rd delivery pipe connect the first delivery pipe and second respectively
The conveying initiating terminal of delivery pipe, two-way valve is provided with the 3rd delivery pipe.
2. differential pressure transmitter blowdown apparatus as claimed in claim 1, it is characterised in that be provided with first delivery pipe
First flow is switched, and first flow is switched and the first booster pump signal communication；Second flow switch is provided with second delivery pipe,
Second flow is switched and the second booster pump signal communication.
3. differential pressure transmitter blowdown apparatus as claimed in claim 1, it is characterised in that the differential pressure transmitter is filled with blowdown
To put also include to be threaded a pipe outside first and threaded a pipe outward with second, wherein being threaded a pipe outside first is communicated in the first delivery pipe, first is defeated
Send pipe extraneous through connection of threading a pipe outside first, threaded a pipe outside described first on be provided with the first ball valve；Thread a pipe outside second connection
In the second delivery pipe, the second delivery pipe is extraneous through connection of threading a pipe outside second, threaded a pipe outside described second on be provided with the second ball
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621437185.3U CN206281602U (en) | 2016-12-26 | 2016-12-26 | A kind of differential pressure transmitter blowdown apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621437185.3U CN206281602U (en) | 2016-12-26 | 2016-12-26 | A kind of differential pressure transmitter blowdown apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206281602U true CN206281602U (en) | 2017-06-27 |
Family
ID=59071348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621437185.3U Expired - Fee Related CN206281602U (en) | 2016-12-26 | 2016-12-26 | A kind of differential pressure transmitter blowdown apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206281602U (en) |
-
2016
- 2016-12-26 CN CN201621437185.3U patent/CN206281602U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20181226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |