CN208518716U - Check door system - Google Patents
Check door system Download PDFInfo
- Publication number
- CN208518716U CN208518716U CN201820895208.8U CN201820895208U CN208518716U CN 208518716 U CN208518716 U CN 208518716U CN 201820895208 U CN201820895208 U CN 201820895208U CN 208518716 U CN208518716 U CN 208518716U
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- Prior art keywords
- check door
- admission line
- door cylinder
- cylinder
- gas
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- 238000012360 testing method Methods 0.000 claims abstract description 43
- 239000012535 impurity Substances 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The main purpose of the utility model is to provide a kind of check door systems, it includes non-return flap, check door cylinder, admission line and test electromagnetic valve component.Check door cylinder is connect with non-return flap, to drive non-return flap to open or close；Admission line is connect with check door cylinder, for check door cylinder gas supply；Electromagnetic valve component is tested to be arranged on admission line, when being detected to check door cylinder, make the gas for entering predetermined amount in check door cylinder, and judges whether check door cylinder works normally according to the motion state of the piston of check door cylinder after the gas for entering predetermined amount in check door cylinder.The utility model solves the problems, such as that check door system in the prior art cannot judge that can non-return flap piston work normally.
Description
Technical field
The utility model relates to steam turbine technology fields, in particular to a kind of check door system.
Background technique
After the effect of pumping non-return flap is halt turbines, pumping non-return flap is closed, and prevents steam refluence in exhaust tube from drawing
Unit driving is played, there are also being exactly after heater full water acts, linkage steam extraction non-return flap is closed, and preventing water from pouring into steam turbine makes steamer
Machine water inlet.It is one of critical valves for protecting steam turbine.The closing of this valve is exactly to be performed by single-acting cylinder.
Single-acting cylinder its spring in working condition is that compressive state is chronically under the pressure of air pressure, and spring is long
Phase is in compressive state, it will and there is fatigue and follows the string, and when cylinder can not close in time, it can cause to steam in exhaust tube
Vapour, which flows backwards or water is made to pour into steam turbine, makes turbine water induction.
However, in the prior art failure monitor can not be carried out to the spring of single-acting cylinder, therefore it can not just judge cylinder
Whether good working order is in.
Utility model content
The main purpose of the utility model is to provide a kind of check door systems, to solve non-return flap system in the prior art
System cannot judge the problem of can non-return flap piston work normally.
To achieve the goals above, the utility model provides a kind of check door system, including non-return flap, non-return flap gas
Cylinder, admission line and test electromagnetic valve component, check door cylinder is connect with non-return flap, to drive non-return flap to open or close；Into
Feed channel is connect with check door cylinder, for check door cylinder gas supply；Test electromagnetic valve component be arranged on admission line, with
When detecting to check door cylinder, make the gas for entering predetermined amount in check door cylinder, and according to entering in check door cylinder
The motion state of the piston of check door cylinder judges whether check door cylinder works normally after the gas of predetermined amount.
Further, test electromagnetic valve component includes main solenoid valve, main solenoid valve be arranged on admission line with control into
Feed channel enters the flow of gas into check door cylinder.
Further, electromagnetic valve component is tested further include: gas bleeder valve, gas bleeder valve are arranged in main solenoid valve and check door cylinder
Between, with when being detected to check door cylinder, portion gas is discharged by gas bleeder valve so that the gas of predetermined amount enter it is inverse
Only in door cylinder.
Further, admission line has air inlet, check door system further include: needle valve, needle valve are arranged in air inlet
Between mouth and test electromagnetic valve component, to control the flow in admission line.
Further, check door system further include: pressure reducing valve, pressure reducing valve be arranged on admission line and be located at needle valve and
It tests between electromagnetic valve component, pressure reducing valve is for depressurizing the gas entered in admission line by needle valve.
Further, check door system further include: filter, filter be arranged on admission line and be located at air inlet with
It tests between electromagnetic valve component, filter is used to filter the gaseous impurity being located in admission line.
Further, check door system further include: mounting bracket, test electromagnetic valve component, needle valve, pressure reducing valve and filtering
Device is each attached in mounting bracket.
Further, check door cylinder has the air inlet for connecting with admission line, is located at check on admission line
It is provided with exhaust pipe on pipeline section between the air inlet and test electromagnetic valve component of door cylinder, to discharge the gas in check door cylinder
Body.
Further, exhaust pipe is equipped with exhaust valve, to control exhaust pipe exhaust by exhaust valve.
Further, check door cylinder is single-acting cylinder.
Using the check door system of the technical solution of the utility model, including non-return flap, check door cylinder, admission line and
Electromagnetic valve component is tested, check door cylinder is connect with non-return flap, to drive non-return flap to open or close；Admission line and non-return flap
Cylinder connection, for check door cylinder gas supply；It tests electromagnetic valve component to be arranged on admission line, test electromagnetic valve component passes through
Control gas enter check door cylinder number, to control the piston motion state in check door cylinder, and pass through observation piston
Motion state judge that can piston work normally；The utility model is controlled in check door cylinder by test electromagnetic valve component
Air inlet, to make piston motion, by observing the motion state of piston to check that can non-return flap piston work normally.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of check door system according to the present utility model.
Wherein, the above drawings include the following reference numerals:
10, needle valve；20, pressure reducing valve；30, filter；40, main solenoid valve；50, mounting bracket；60, gas bleeder valve；70, it tries
Electrical verification electromagnetic valve component；80, admission line；90, check door cylinder；100, exhaust pipe；110, exhaust valve.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The utility model provides a kind of check door system, referring to FIG. 1, the check door system includes non-return flap, check
Door system further include: check door cylinder 90, admission line 80 and test electromagnetic valve component 70, check door cylinder 90 and non-return flap connect
It connects, to drive non-return flap to open or close；Admission line 80 is connect with check door cylinder 90, for the gas supply of check door cylinder 90；
It tests electromagnetic valve component 70 to be arranged on admission line 80, to make check door cylinder when detecting check door cylinder 90
Enter the gas of predetermined amount in 90, and according to the piston of check door cylinder 90 after the gas for entering predetermined amount in check door cylinder 90
Motion state judge whether check door cylinder 90 works normally.
Check door system provided by the utility model includes non-return flap, check door cylinder 90, admission line 80 and test
Electromagnetic valve component 70, check door cylinder 90 connect with non-return flap and control opening or closing for non-return flap；Admission line 80 with it is inverse
Only door cylinder 90 is connected to, and to ventilate to make the piston motion in check door cylinder 90 into check door cylinder 90, tests electromagnetism
Valve module 70 is arranged on admission line 80, the gas flow conveyed by controlling and adjusting admission line 80 into check door cylinder
Control the movement of 90 inner piston of check door cylinder, and the movement by observing the piston rod connecting with piston is to judge piston
No proper motion, spring and piston bite to check door cylinder 90 detect, and therefore, the check door system of the application passes through
Above-mentioned setting, which solves check door system in the prior art, cannot judge that can non-return flap piston work normally asks
Topic.
Preferably, admission line 80 is round tube, and internal diameter is greater than 20mm, to ensure the quickly air inlet into check door cylinder 90
Or the gas in check door cylinder 90 is quickly discharged.
Testing electromagnetic valve component 70 includes main solenoid valve 40, and main solenoid valve 40 is arranged on admission line 80 to control air inlet
The on-off of pipeline 80.
As shown in Figure 1, test electromagnetic valve component 70 in the present embodiment includes main solenoid valve 40, when needing to non-return flap gas
In cylinder 90 when gas supply, 40 power control admission line 80 of main solenoid valve is opened, to supply to make to live into check door cylinder 90
Plug movement.
Test electromagnetic valve component further include: gas bleeder valve 60, gas bleeder valve 60 are arranged in main solenoid valve 40 and check door cylinder 90
Between, with when being detected to check door cylinder 90, portion gas is discharged by gas bleeder valve 60 so that predetermined amount gas into
Enter in check door cylinder 90.
As shown in Figure 1, being provided with and losing heart on the admission line 80 after main solenoid valve 40 in one embodiment of the application
Valve 60 discharges the portion gas in admission line 80 so that the gas of predetermined amount enters non-return flap gas by setting gas bleeder valve 60
In cylinder 90, so as to avoid when check door cylinder cisco unity malfunction, the gas in admission line 80 fully enters non-return flap
It causes gas pressure excessive in cylinder 90, check door cylinder is damaged.
In another embodiment of the application, the pressure release being connected to its valve chamber is provided on the valve body of main solenoid valve 40
Mouthful, the compression relief cock for being opened and closed pressure relief opening is provided on pressure relief opening, with when detecting to check door cylinder 90, by letting out
Port discharges portion gas so that the gas of predetermined amount enters in check door cylinder 90.
Admission line 80 have air inlet, check door system further include: needle valve 10, needle valve 10 setting air inlet with
It tests between electromagnetic valve component 70, to control the on-off of admission line 80.
As shown in Figure 1, being provided with needle valve 10 at the air inlet of admission line 80 in the present embodiment, passing through needle valve
10 come close or reconcile enter admission line 80 in air-flow size.
Check door system further include: pressure reducing valve 20, pressure reducing valve 20 are arranged on admission line 80 and are located at 10 He of needle valve
It tests between electromagnetic valve component 70, pressure reducing valve 20 is used to subtract the gas entered in admission line 80 by needle valve 10
Pressure.
As shown in Figure 1, pressure reducing valve 20 is also provided on admission line 80 in the present embodiment, due to passing through needle valve 10
It is higher into the gas pressure in admission line 80, pressure reducing valve 20 is set herein to enter admission line 80 to by needle valve 10
Interior gas is depressurized, and the size of gas pressure in stable admission line 80 is played.
Check door system further include: filter 30, filter 30 are arranged on admission line 80 and are located at air inlet and examination
Between electrical verification electromagnetic valve component 70, filter 30 is used to filter the gaseous impurity being located in admission line 80.
As shown in Figure 1, being equipped with filter 30 on admission line 80, filter 30 is located at air inlet and test solenoid valve block
The gaseous impurity in admission line 80 is filtered between part 70, guarantees the gas free from admixture for entering test electromagnetic valve component 70.
Check door system further include: mounting bracket 50, test electromagnetic valve component 70, needle valve 10, pressure reducing valve 20 and filtering
Device 30 is each attached in mounting bracket 50.
Check door system in the application is additionally provided with mounting bracket 50, by the test electromagnetic valve component 70 of check door system,
Needle valve 10, pressure reducing valve 20 and filter 30 are each attached in mounting bracket 50, and by check door cylinder 90 and mounting bracket 50
It is attached, so that entire non-return flap system structure is compact, while reducing test electromagnetic valve component 70 to non-return flap gas
The length of admission line 80 between cylinder 90 advantageously reduces the time that gas is discharged in check door cylinder 90.
Check door cylinder 90 has the air inlet for connecting with admission line 80, is located at non-return flap gas on admission line 80
It is provided with exhaust pipe 100 on pipeline section between the air inlet and test electromagnetic valve component 70 of cylinder 90, to discharge check door cylinder 90
Interior gas.
As shown in Figure 1, exhaust pipe 100 is provided at the air inlet of check door cylinder 90, exhaust pipe 100 and admission line
80 connections, with the gas in quick release check door cylinder 90.
Exhaust pipe 100 is equipped with exhaust valve 110, is vented with controlling exhaust pipe 100 by exhaust valve 110.
As shown in Figure 1, being provided with exhaust valve 110 on exhaust pipe 100, exhaust valve 110 is fast-discharge valve, when in use can
Gas in exhaust pipe 100 is discharged rapidly.When needing to discharge the gas in check door cylinder 90, by open fast-discharge valve come
The gas in check door cylinder 90 is discharged out of exhaust pipe 100.
Preferably, the check door cylinder 90 in the application check door system is single-acting cylinder.
The application is accomplished in that
Check door system in the application includes main solenoid valve 40 and test electromagnetic valve component 70, in main solenoid valve energization feelings
Under condition, the movement test of steam extraction non-return flap is carried out by operation gas bleeder valve.When main solenoid valve is closed, by being mounted on cylinder
The rapid escape valve at rear portion is discharged in check door cylinder 90 rapidly by being greater than the admission line 80 and exhaust pipe 100 of 20mm
Compressed air, to realize that check door cylinder closed non-return flap in one second.
Main solenoid valve is bolted in mounting bracket 50, and mounting bracket 50 is further through bolt and check door cylinder 90
It is connected.
For needle valve 10 by connecting to silk with filtering pressure reducing valve 20, filtering pressure reducing valve 20 and filter 30 pass through bolt and close
Seal connection, filter 30 are connect with test electromagnetic valve component 70 also by bolt and sealing ring.
The Quick air-discharge pipe flange after 90s with steam extraction check door cylinder and admission line 80 are connect；
The utility model has following effect:
(1) compact-sized: the application is by mounting bracket 50 test electromagnetic valve component 70, filter 30, filtering decompression
Valve 20, needle valve 10 and steam extraction check door cylinder 90 link together, so that test electromagnetic valve component 70 arrives check door cylinder 90
Distance it is very short, shorten the efflux time of non-return flap cylinders compressing air.
(2) test electromagnetic valve component 70 provided by the present application has the function of on-line testing, and this functionality makes test electricity
Electromagnetic valve component 70 not only controls single-acting cylinder, while also acting as whether detection cylinder spring is normal and protection cylinder spring uses
The effect in service life.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of check door system, including non-return flap, which is characterized in that the check door system further include:
Check door cylinder (90), the check door cylinder (90) connect with the non-return flap, to drive the non-return flap to open or
It closes；
Admission line (80), the admission line (80) connect with the check door cylinder (90), for the check door cylinder
(90) it supplies；
It tests electromagnetic valve component (70), the test electromagnetic valve component (70) is arranged on the admission line (80), right
When the check door cylinder (90) is detected, make the gas for entering predetermined amount in the check door cylinder (90), and according to institute
It states in check door cylinder (90) and judges institute into the motion state of the piston of the check door cylinder (90) after the gas of predetermined amount
State whether check door cylinder (90) works normally.
2. check door system according to claim 1, which is characterized in that the test electromagnetic valve component (70) includes main electricity
Magnet valve (40), the main solenoid valve (40) are arranged on the admission line (80) to control the admission line (80) to described
Enter the flow of gas in check door cylinder (90).
3. check door system according to claim 2, which is characterized in that the test electromagnetic valve component (70) further include:
Gas bleeder valve (60), gas bleeder valve (60) setting are located at the main solenoid valve (40) and institute in the admission line (80)
It states on the pipeline section between check door cylinder (90), lost heart by described when being detected to the check door cylinder (90)
Valve (60) discharges portion gas so that predetermined amount of gas enters in the check door cylinder (90).
4. check door system according to claim 1, which is characterized in that the admission line (80) has air inlet, institute
State check door system further include:
Needle valve (10), the needle valve (10) are arranged between the air inlet and the test electromagnetic valve component (70), with
Control the flow that gas enters in the admission line (80).
5. check door system according to claim 4, which is characterized in that the check door system further include:
Pressure reducing valve (20), the pressure reducing valve (20) are arranged on the admission line (80) and are located at the needle valve (10) and institute
It states between test electromagnetic valve component (70), the pressure reducing valve (20) is used to enter admission line to by the needle valve (10)
(80) gas in is depressurized.
6. check door system according to claim 5, which is characterized in that the check door system further include:
Filter (30), the filter (30) are arranged on the admission line (80) and are located at the air inlet and the examination
Between electrical verification electromagnetic valve component (70), the filter (30) is used to filter the gaseous impurity being located in the admission line (80).
7. check door system according to claim 6, which is characterized in that the check door system further include:
Mounting bracket (50), the test electromagnetic valve component (70), needle valve (10), pressure reducing valve (20) and filter (30) are solid
It is scheduled on the mounting bracket (50).
8. check door system according to claim 1, which is characterized in that the check door cylinder (90) have for institute
The air inlet for stating admission line (80) connection, be located on the admission line (80) air inlet of the check door cylinder (90) with
Exhaust pipe (100) are provided on pipeline section between test electromagnetic valve component (70), to discharge the check door cylinder (90)
Interior gas.
9. check door system according to claim 8, which is characterized in that the exhaust pipe (100) is equipped with exhaust valve
(110), to control exhaust pipe (100) exhaust by the exhaust valve (110).
10. check door system according to claim 1, which is characterized in that the check door cylinder (90) is single-acting gas
Cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820895208.8U CN208518716U (en) | 2018-06-08 | 2018-06-08 | Check door system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820895208.8U CN208518716U (en) | 2018-06-08 | 2018-06-08 | Check door system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518716U true CN208518716U (en) | 2019-02-19 |
Family
ID=65326006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820895208.8U Active CN208518716U (en) | 2018-06-08 | 2018-06-08 | Check door system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398665A (en) * | 2020-03-03 | 2020-07-10 | 神华神东电力有限责任公司 | Charged detection device |
| CN114354177A (en) * | 2021-12-10 | 2022-04-15 | 国电长源汉川第一发电有限公司 | Automatic testing system and method for steam extraction check valve of steam turbine |
-
2018
- 2018-06-08 CN CN201820895208.8U patent/CN208518716U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398665A (en) * | 2020-03-03 | 2020-07-10 | 神华神东电力有限责任公司 | Charged detection device |
| CN114354177A (en) * | 2021-12-10 | 2022-04-15 | 国电长源汉川第一发电有限公司 | Automatic testing system and method for steam extraction check valve of steam turbine |
| CN114354177B (en) * | 2021-12-10 | 2024-03-12 | 国电长源汉川第一发电有限公司 | Automatic test system and method for steam extraction check valve of steam turbine |
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