CN220716215U - Inner leakage detection system for disc valve on cabin pump balance pipe - Google Patents
Inner leakage detection system for disc valve on cabin pump balance pipe Download PDFInfo
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- CN220716215U CN220716215U CN202322287497.7U CN202322287497U CN220716215U CN 220716215 U CN220716215 U CN 220716215U CN 202322287497 U CN202322287497 U CN 202322287497U CN 220716215 U CN220716215 U CN 220716215U
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- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses an internal leakage detection system for a disc valve on a balance pipe of a bin pump. The utility model can automatically close the first electric valve when the DCS control system detects the internal leakage of the disc valve, and can reduce the times and the workload of disassembling the valve for checking by on-site maintainers before checking the internal leakage. Meanwhile, a second balance pipe is newly added on the ash bucket and the bin pump to serve as a standby pipeline of the first balance pipe, and a second electric valve is arranged on the second balance pipe and forms interlocking control with the first electric valve through the DCS control system, so that the normal operation of the electric dust removal and ash transportation system can be ensured during the period of overhauling the disc valve.
Description
Technical Field
The utility model belongs to the technical field of electric dust removal ash conveying systems, and particularly relates to an internal leakage detection system for a disc valve on a balance pipe of a bin pump.
Background
In the operation of the electric dust removing and conveying system, a dome valve is used for switching off a balance pipe connected between an ash bucket and a bin pump, and after the conveying process of the bin pump is finished, the pressure in the bin is discharged by opening the dome valve, so that the pressure is the same as the atmospheric pressure, and the feeding valve is opened for feeding in the follow-up operation. However, the dome valve needs the sealing ring to be in sealing connection in the installation process, and the sealing ring on the market is uneven in quality, namely, the rubber materials of the sealing ring are different in polarity and are easy to damage, so that maintenance personnel are required to replace the sealing ring frequently.
In order to solve the problems, the dome valve is replaced by the disc valve, and the disc valve is arranged on the balance pipe without a sealing ring, so that the tedious work of replacing the sealing ring can be greatly reduced when the disc valve is put into use. However, after a period of operation, the disc valve is found to leak inwards, so that the material stopping effect is affected, and the phenomena of frequent pipe blockage and ash position elevation of an ash hopper of an ash conveying system are further caused, so that the safe operation of the electric dust-removing ash hopper and the continuous high-load stable operation of the unit are seriously affected.
By on-site maintenance and analysis, the internal leakage of the disc valve mainly has the following three conditions: (1) The valve is opened and closed to run out (the movable disc is not concentric with the static disc), the valve is leaked, and the maintenance and adjustment of the stroke can be performed; (2) The valve sealing surface is blown to damage the inner leakage, and the valve needs to be replaced; (3) The valve has improper sealing gap (the upper and lower gaps between the movable disc and the static disc are large), the sealing surface leaks inwards, and the sealing gap treatment is adjusted. The replacement of the valve is mainly caused by offset of the sealing gap and insufficient stroke of the cylinder, so that the sealing surface of the valve is damaged to cancel the pin. After the disc valve arranged on the balance pipe of the bin pump of the electric dust removal ash conveying system leaks in the process of operation, the detection is difficult, especially when the leakage is small, the detection and analysis are carried out only by experienced personnel at present, so that the valve inspection is frequently required to be disassembled by maintenance personnel, the workload of personnel is increased, and the frequent pipe blockage of the ash conveying system is influenced.
Disclosure of Invention
Aiming at the problems that in the background art, the valve sealing surface of a disc valve is damaged by blowing and the valve needs to be replaced due to internal leakage, and the valve needs to be frequently detached by an maintainer for inspection and frequent operation. Based on the existing electric dust removing and ash conveying system, the utility model aims to provide an internal leakage detection system for a disc valve on a balance pipe of a bin pump.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an interior leak detecting system for disc valve on storehouse pump balance pipe, is linked together through discharging pipe and storehouse pump including ash bucket to and set up the feed chute on its bottom discharge gate the manual push-pull valve, pneumatic valve are installed respectively on the discharging pipe, are linked together through a balance pipe between ash bucket and the storehouse pump, install the disc valve on a balance pipe install flow transmitter, an electric valve respectively on a balance pipe, flow transmitter's signal output part and an electric valve's signal input part insert respectively and form flow interlocking control in the DCS control system of electric precipitation ash conveying system.
As a further explanation and limitation of the above technical solution, the flow transmitter is located between the disc valve and the ash bucket, and the first electric valve is located between the disc valve and the bin pump.
As a further supplementary explanation of the technical scheme, a temperature transmitter is arranged on the first balance pipe, the signal output end of the temperature transmitter is connected to a DCS control system of the electric dust removing and conveying system, and the temperature transmitter and the first electric valve form temperature interlocking control.
As a further supplementary explanation of the technical scheme, a manual shutoff valve is arranged on the balance pipe between the first electric valve and the bin pump and is used for shutting off the balance pipe, so that the maintenance and replacement of the disc valve, the flow transmitter, the first electric valve and the temperature transmitter are facilitated.
As a further supplementary explanation of the technical scheme, the ash bucket and the bin pump are further provided with a second balance pipe, the second balance pipe is used as a standby pipeline of the first balance pipe, a second electric valve is arranged on the second balance pipe, and a signal input end of the second electric valve is connected into a DCS control system of the electric dust collection and transmission system to form interlocking control with the first electric valve.
Compared with the transformation scheme which is not implemented before transformation, the transformation scheme provided by the utility model has the following advantages:
1. the utility model is characterized in that a flow transmitter and a first electric valve are respectively arranged on the first balance pipe, wherein the flow transmitter and the first electric valve form flow linkage control through a DCS control system of an electric dust removal ash conveying system. When the electric dust removing and conveying system operates, the DCS control system can automatically close the first electric valve when detecting internal leakage of the disc valve under the condition that the disc valve is closed, and on-site maintainers can check the internal leakage. Therefore, the internal leakage detection system can reduce the times of disassembling the valve for inspection by overhauling staff, reduce the workload of staff and reduce the phenomenon of frequent pipe blockage of the ash conveying system.
2. In the utility model, in the flow linkage control formed by the flow transmitter and the first electric valve, the temperature transmitter is arranged on the first balance pipe, so that the temperature linkage control formed by the flow transmitter and the first electric valve is increased, and the effectiveness of an internal leakage detection system is ensured by the double linkage control of the first electric valve.
3. According to the utility model, the manual shutoff valve is arranged on the first balance pipe, so that the first electric valve just meeting the condition of internal leakage of the disc valve can be effectively prevented from being failed, and the first balance pipe is shut off through the manual shutoff valve to carry out maintenance and replacement on the disc valve, the flow transmitter, the first electric valve and the temperature transmitter.
4. According to the utility model, the second balance pipe is newly added on the ash bucket and the bin pump to serve as a standby pipeline of the first balance pipe, and the second electric valve is arranged on the second balance pipe and forms interlocking control with the first electric valve through the DCS control system, so that the normal operation of the electric dust removal ash conveying system can be ensured during the maintenance of the disc valve.
Drawings
FIG. 1 is a flow chart of the reforming process of the present utility model.
In the figure: the ash bucket is 1, the feed chute is 2, the discharging pipe is 3, the bin pump is 4, the manual push-pull valve is 5, the pneumatic valve is 6, the balance pipe is 7, the disc valve is 8, the flow transmitter is 9, the electric valve is 10, the temperature transmitter is 11, the manual shutoff valve is 12, the balance pipe is 13, and the electric valve is 14.
Detailed Description
In order to further explain the technical scheme of the utility model, the utility model is further described by four embodiments according to the implementation conditions of the technical improvement project by combining the drawings.
As shown in figure 1, the existing electric dust removing and ash conveying system mainly comprises an ash bucket 1, a feeding trough 2 and a bin pump 4, wherein the feeding trough 2 is arranged on a bottom discharge hole of the ash bucket 1, the feeding trough 2 is communicated with the bin pump 4 through a discharge pipe 3, a manual gate valve 5 and a pneumatic valve 6 are respectively arranged on the discharge pipe 3 and used for controlling feeding, the ash bucket 1 and the bin pump 4 are communicated through a balance pipe 7, and a disc valve 8 is arranged on the balance pipe 7.
Example 1
The utility model provides an interior leak detection system for disc valve on storehouse pump balance pipe is mainly installed flow transmitter 9, no. one electric valve 10 respectively on the balance pipe 7 of current electric precipitation ash conveying system, and wherein flow transmitter 9 is located between disc valve 8 and ash bucket 1, and No. one electric valve 10 is located between disc valve 8 and storehouse pump 4, flow transmitter 9's signal output part and No. one electric valve 10's signal input part insert respectively in the DCS control system of electric precipitation ash conveying system and form flow interlocking control. When the electric dust removing and conveying system is operated, the disc valve 8 is closed, if the DCS control system cannot detect the flow, the disc valve 8 is free from internal leakage, and the DCS control system controls the first electric valve 10 to be in a normally open state; on the contrary, once the flow transmitter 9 detects that the compressed air in the bin pump 4 in the first balance pipe 7 is strung into the ash bucket 1, the DCS control system automatically controls the first electric valve 10 to be closed, and on-site maintenance personnel check whether the running position and the insufficient cylinder stroke can occur due to the sealing gap or not before, if the running position and the insufficient cylinder stroke are caused by the reasons, the problem of internal leakage of the disc valve is solved by adopting measures for adjusting the upper and lower gaps of the movable disc and the static disc or adjusting the cylinder stroke, and if the two adjusting measures do not work, the condition that the sealing surface of the valve is internal leakage due to blowing damage is indicated, and the valve needs to be replaced.
Example two
In order to prevent the disc valve from internal leakage, the first electric valve is just in contact with the disc valve to fail, and meanwhile, the normal operation of the electric dust removing and conveying system is not affected. The following technical scheme is supplemented on the basis of the first embodiment: a manual shutoff valve 12 is arranged on the balance pipe 7 between the first electric valve 10 and the cabin pump 4, and the manual shutoff valve 12 is used for shutting off the balance pipe 7, so that the maintenance and the replacement of the disc valve 8, the flow transmitter 9, the first electric valve 10 and the temperature transmitter 11 are facilitated.
Example III
In order to avoid the failure of the flow transmitter, the inner leakage of the disc valve is not timely found, so that the first electric valve is in linkage failure, the sealing surface of the valve is damaged by air flow, and finally the disc valve is replaced. We supplement the following temperature linkage control scheme in the two embodiments described above: because the compressed air in the bin pump is used for stringing the heat carried by ash into the ash bucket through the internal-leakage disc valve, the temperature of the first balance pipe is increased, so that the first balance pipe 7 is provided with the temperature transmitter 11, the signal output end of the temperature transmitter 11 is connected into the DCS control system of the electric dust-removing ash-conveying system, and the temperature transmitter and the first electric valve 10 form temperature linkage control. In this embodiment, if the DCS control system detects that any of the flow or temperature in the first balance pipe is abnormal, the first electrically operated valve 10 is automatically controlled to be closed.
Example IV
In order to not influence the normal operation of the whole electric dust removing and ash conveying system and realize the purpose of continuous operation, in the first to third embodiments, the following standby schemes are supplemented: the second balance pipe 13 is added between the ash bucket 1 and the bin pump 4 and is used as a standby pipeline of the first balance pipe 7, the second electric valve 14 is arranged on the second balance pipe 13, and the signal input end of the second electric valve 14 is connected into a DCS control system of the electric dust-removing and ash-transporting system to form interlocking control with the first electric valve 10. When the disc valve 8 leaks internally, the DCS control system automatically controls the first electric valve 10 to be closed, and simultaneously, the normally closed second electric valve 14 is automatically opened, a standby pipeline is started, and an maintainer can overhaul the disc valve 8 in the process.
While the principal features and advantages of the present utility model have been shown and described, it will be apparent to those skilled in the art that the detailed description of the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other embodiments without departing from the spirit or essential characteristics of the utility model, and the inventive concept and design concept of the utility model shall be equally included in the scope of the utility model disclosed in the appended claims. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides an interior leak detecting system for disc valve on storehouse pump balance pipe, is including ash bucket (1) and feed chute (2) of setting on its bottom discharge gate, feed chute (2) are linked together through discharging pipe (3) with storehouse pump (4) install manual push-pull valve (5), pneumatic valve (6) respectively on discharging pipe (3), be linked together through balance pipe (7) between ash bucket (1) and storehouse pump (4), install disc valve (8) on balance pipe (7), its characterized in that: the first balance pipe (7) is respectively provided with a flow transmitter (9) and a first electric valve (10), and the signal output end of the flow transmitter (9) and the signal input end of the first electric valve (10) are respectively connected into a DCS control system of the electric dust removal ash conveying system to form flow linkage control.
2. An internal leakage detection system for a disc valve on a balance tube of a cartridge pump according to claim 1, wherein: the flow transmitter (9) is positioned between the disc valve (8) and the ash bucket (1), and the first electric valve (10) is positioned between the disc valve (8) and the bin pump (4).
3. An internal leakage detection system for a disc valve on a balance tube of a cartridge pump according to claim 1 or 2, wherein: a temperature transmitter (11) is arranged on the first balance pipe (7), the signal output end of the temperature transmitter (11) is connected to a DCS control system of the electric dust-collecting and ash-transporting system, and the temperature transmitter and the first electric valve (10) form temperature linkage control.
4. An internal leakage detection system for a disc valve on a balance tube of a cartridge pump according to claim 3, wherein: a manual shutoff valve (12) is arranged on a balance pipe (7) between the first electric valve (10) and the bin pump (4), and the manual shutoff valve (12) is used for shutting off the first balance pipe (7) so as to facilitate maintenance and replacement of the disc valve (8), the flow transmitter (9), the first electric valve (10) and the temperature transmitter (11).
5. An internal leakage detection system for a disc valve on a balance tube of a cartridge pump according to claim 4, wherein: the dust hopper (1) and the bin pump (4) are further provided with a second balance pipe (13), the second balance pipe (13) is used as a standby pipeline of the first balance pipe (7), a second electric valve (14) is arranged on the second balance pipe, and a signal input end of the second electric valve (14) is connected into a DCS control system of the electric dust removal and ash transmission system to form interlocking control with the first electric valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322287497.7U CN220716215U (en) | 2023-08-24 | 2023-08-24 | Inner leakage detection system for disc valve on cabin pump balance pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322287497.7U CN220716215U (en) | 2023-08-24 | 2023-08-24 | Inner leakage detection system for disc valve on cabin pump balance pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220716215U true CN220716215U (en) | 2024-04-05 |
Family
ID=90488879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322287497.7U Active CN220716215U (en) | 2023-08-24 | 2023-08-24 | Inner leakage detection system for disc valve on cabin pump balance pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220716215U (en) |
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2023
- 2023-08-24 CN CN202322287497.7U patent/CN220716215U/en active Active
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