CN212513451U - Hearth negative pressure meter measuring structure - Google Patents
Hearth negative pressure meter measuring structure Download PDFInfo
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- CN212513451U CN212513451U CN202021582640.5U CN202021582640U CN212513451U CN 212513451 U CN212513451 U CN 212513451U CN 202021582640 U CN202021582640 U CN 202021582640U CN 212513451 U CN212513451 U CN 212513451U
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- negative pressure
- purified air
- measuring structure
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- 238000010079 rubber tapping Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000012423 maintenance Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 241000883966 Astrophytum capricorne Species 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000877344 Strophanthus divaricatus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a furnace negative pressure meter measuring structure, a nozzle is arranged on a flue baffle of the furnace negative pressure meter, the nozzle is connected with the positive pressure side of a micro differential pressure transmitter through a pressure tapping pipe, and a socket welding gate valve is arranged on the pressure tapping pipe; one end of the purified air pipeline is connected with the pressure tapping pipe between the socket welding gate valve and the positive pressure side of the micro differential pressure transmitter, and the other end of the purified air pipeline is a purified air inlet; an air source ball valve and a socket welding stop valve are sequentially arranged on the purified air pipeline from the purified air inlet to the joint of the purified air pipeline and the pressure tapping pipe. This embodiment guarantees furnace negative pressure measuring reliable, and its fault handling frequency of greatly reduced promotes preventative, predictive processing number of times, guarantees furnace negative pressure environment.
Description
Technical Field
The utility model belongs to the technical field of furnace negative pressure table measures, concretely relates to structure is measured to furnace negative pressure table.
Background
At present, a furnace negative pressure meter of a heating furnace is mainly distributed in the front and the back of a flue baffle plate of the heating furnace, near a convection chamber of the furnace and on the upper part, the middle part and the bottom of the heating furnace, and a micro differential pressure transmitter is adopted for measurement, and a measured value theoretically becomes larger from top to bottom, but the current pressure taking mode can generate abnormal fluctuation in one period or shorter time, and the fluctuation of an indicated value of wind blowing or rainy weather is more severe, so that the operation of the working condition of a process furnace is influenced.
The invention content is as follows:
in order to overcome the defects of the background technology, the invention provides a hearth negative pressure meter measuring structure, which ensures the reliability of hearth negative pressure measurement.
In order to solve the technical problems, the invention adopts the technical scheme that:
a furnace negative pressure gauge measuring structure is characterized in that a nozzle is arranged on a flue baffle of the furnace negative pressure gauge, the nozzle is connected with the positive pressure side of a micro-differential pressure transmitter through a pressure tapping pipe, and a socket welding gate valve is arranged on the pressure tapping pipe;
one end of the purified air pipeline is connected with the pressure tapping pipe between the socket welding gate valve and the positive pressure side of the micro differential pressure transmitter, and the other end of the purified air pipeline is a purified air inlet;
an air source ball valve and a socket welding stop valve are sequentially arranged on the purified air pipeline from the purified air inlet to the joint of the purified air pipeline and the pressure tapping pipe.
Preferably, the pressure tapping pipe also comprises a rain cover with an opening at the lower part, the rain cover is connected to the pressure tapping pipe close to the micro differential pressure transmitter, and the micro differential pressure transmitter is arranged at the hollow part of the rain cover.
Preferably, the pressure tapping pipe is a straight pipe, and the horizontal position of the end of the pressure tapping pipe connected to the nozzle is lower than that of the end connected to the micro differential pressure transmitter.
Preferably, the plane where the pressure sampling pipe is located and the horizontal plane where the hearth negative pressure gauge is located form an included angle within 5 degrees.
Preferably, a single-thread head is arranged on one side, close to the air source ball valve, of the socket welding stop valve.
Preferably, the outlet of the low-pressure side of the micro differential pressure transmitter is a waterproof cavel outlet.
Preferably, the waterproof cavel outlet is flat.
Preferably, the nozzles are disposed at an upper portion of the flue damper.
Preferably, the device further comprises a maintenance platform, and the straight distance between the nozzle and the horizontal plane where the maintenance platform is located is not less than 1.2 meters.
The invention has the beneficial effects that: this embodiment guarantees furnace negative pressure measuring reliable, and its fault handling frequency of greatly reduced promotes preventative, predictive processing number of times, guarantees furnace negative pressure environment. The structure of the invention reduces the threaded connection, flange connection and detachable structure, can directly measure the change amplitude of the negative pressure surface value of the hearth, and can conduct dredging treatment on the pressure guiding pipe. The purification wind pipeline can carry out preventive cleaning to the draught tube, and the gauge outfit negative pressure is surveyed the installation and is prevent wind the goat's horn and install the rain-proof cover of preventing wind, reaches the purpose of preventing wind and rain, has increased the stability of equipment, increase of service life.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In the figure: 1-flue baffle, 2-pipe mouth, 3-pressure taking pipe, 4-micro differential pressure transmitter, 5-socket welding gate valve, 6-purified air pipeline, 7-air source ball valve, 8-socket welding stop valve, 9-rain cover, 10-single-screw head and 11-waterproof goat's horn outlet
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
A furnace negative pressure gauge measuring structure is characterized in that a nozzle 2 is arranged on a flue baffle 1 of the furnace negative pressure gauge, the nozzle 2 is connected with the positive pressure side of a micro-differential pressure transmitter 4 through a pressure tapping pipe 3, and a socket welding gate valve 5 is arranged on the pressure tapping pipe 3;
one end of a purified air pipeline 6 is connected with a pressure tapping pipe 3 between a socket welding gate valve 5 and the positive pressure side of the micro differential pressure transmitter 4, and the other end of the purified air pipeline 6 is a purified air inlet;
an air source ball valve 7 and a socket welding stop valve 8 are sequentially arranged on a purified air pipeline 6 from a purified air inlet to the joint of the pressure sampling pipe 3.
Still include rain-proof cover 9 of below open-ended, rain-proof cover 9 is connected in the pressure pipe 3 of getting close to differential pressure transmitter 4, and differential pressure transmitter 4 sets up the hollow position at rain-proof cover 9. The pressure tapping pipe 3 is a straight pipe, and the horizontal position of one end of the pressure tapping pipe 3 connected to the nozzle 2 is lower than that of one end connected to the micro differential pressure transmitter 4. The plane of the pressure sampling pipe 3 and the horizontal plane of the negative pressure meter of the hearth form an included angle within 5 degrees. And a single-thread head 10 is arranged on one side of the socket welding stop valve 8 close to the air source ball valve 7. The outlet of the low-pressure side of the micro differential pressure transmitter 4 is a waterproof cavel outlet 11. The waterproof cavel outlet 11 is flat. The nozzle 2 is disposed at an upper portion of the flue damper 1. The device also comprises a maintenance platform, and the linear distance between the nozzle 2 and the horizontal plane where the maintenance platform is located is not less than 1.2 m.
This embodiment guarantees furnace negative pressure measuring reliable, and its fault handling frequency of greatly reduced promotes preventative, predictive processing number of times, guarantees furnace negative pressure environment.
To reduce the sealing points: be flange gate valve (bolted connection) with traditional primary valve, change into socket joint welding gate valve 5 (welding), set up socket joint and weld stop valve 8 (welding, this valve is the state of closing entirely usually), because of air supply ball valve 7 sealing performance is not too good, realize secondary seal to this purification wind pipeline 6 through it, ensure to purify the wind and do not cause the influence to system's negative pressure measurement, newly-increased detachable air supply ball valve 7, can change at any time when judging its sealing performance decline.
The purified air pipeline 6 adopts a low-in high-out mode, and a straight pipe section between the transmitter and the nozzle 2 is upward inclined (within 5 degrees), namely when a small amount of water vapor in the hearth can flow back to the hearth, or the water vapor is condensed to cause a purified air pipe. The measurement is not affected.
The rain cover 9 is made of heat-insulating aluminum skin according to the size of a gauge outfit and is fixed on a gauge outfit fixed mounting bracket by screws, and waterproof goat horns are formed by bending phi 6 fluid stainless pipes, so that the measurement error caused by the fact that the external environment pressure enters a negative pressure side in strong wind and heavy rain weather is avoided.
The distance between the nozzle 2 and the pressure guiding pipe and the maintenance platform is kept at 1.2 meters, so that the maintenance, the later-period disassembly and the field measurement value of the observation instrument are convenient.
The invention reduces the screw connection, flange connection and detachable structure, thereby replacing a secondary valve, a blow-down valve and a flange gate valve with a socket welding gate valve 5 and the like. Through the variation range of the measuring value, the pressure guiding pipe is dredged in an operable mode, the DCS sets the HH value of the alarm value, and maintenance personnel are reminded of regularly processing the pressure guiding pipe. The outlet of the primary valve of the pressure guiding pipe is added with one path of purified air, and the pressure guiding pipe is cleaned preventively at regular intervals. The negative pressure of the meter head is measured and installed with a wind-proof cleat and a wind-proof and rain-proof cover 9, thus achieving the purpose of wind-proof and rain-proof.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a furnace negative pressure table measures structure which characterized in that: a nozzle (2) is arranged on a flue baffle (1) of a hearth negative pressure meter, the nozzle (2) is connected with the positive pressure side of a micro-differential pressure transmitter (4) through a pressure tapping pipe (3), and a socket welding gate valve (5) is arranged on the pressure tapping pipe (3);
one end of a purified air pipeline (6) is connected with the pressure tapping pipe (3) between the socket welding gate valve (5) and the positive pressure side of the micro differential pressure transmitter (4), and the other end of the purified air pipeline (6) is a purified air inlet;
an air source ball valve (7) and a socket welding stop valve (8) are sequentially arranged from the purified air inlet to a purified air pipeline (6) at the joint of the pressure sampling pipe (3).
2. The hearth negative pressure gauge measuring structure according to claim 1, characterized in that: still include below open-ended rain-proof cover (9), rain-proof cover (9) are connected and are close to pressure pipe (3) are got to differential pressure transmitter (4), differential pressure transmitter (4) set up the hollow position of rain-proof cover (9).
3. The hearth negative pressure gauge measuring structure according to claim 1, characterized in that: the pressure tapping pipe (3) is a straight pipe, and the horizontal position of one end of the pressure tapping pipe (3) connected to the nozzle (2) is lower than that of one end connected to the micro-differential pressure transmitter (4).
4. The hearth negative pressure gauge measuring structure according to claim 3, characterized in that: and an included angle within 5 degrees is formed between the plane where the pressure sampling pipe (3) is located and the horizontal plane where the hearth negative pressure meter is located.
5. The hearth negative pressure gauge measuring structure according to claim 1, characterized in that: and a single-wire head (10) is arranged on one side of the socket welding stop valve (8) close to the gas source ball valve (7).
6. The hearth negative pressure gauge measuring structure according to claim 1, characterized in that: the outlet of the low-pressure side of the micro differential pressure transmitter (4) is a waterproof cavel outlet (11).
7. The hearth negative pressure gauge measuring structure according to claim 6, characterized in that: the waterproof cavel outlet (11) is flat.
8. The hearth negative pressure gauge measuring structure according to claim 1, characterized in that: the nozzle (2) is arranged at the upper part of the flue baffle (1).
9. The hearth negative pressure gauge measuring structure according to claim 1, characterized in that: the device is characterized by further comprising a maintenance platform, and the linear distance between the nozzle (2) and the horizontal plane where the maintenance platform is located is not less than 1.2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021582640.5U CN212513451U (en) | 2020-08-03 | 2020-08-03 | Hearth negative pressure meter measuring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021582640.5U CN212513451U (en) | 2020-08-03 | 2020-08-03 | Hearth negative pressure meter measuring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212513451U true CN212513451U (en) | 2021-02-09 |
Family
ID=74443873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021582640.5U Active CN212513451U (en) | 2020-08-03 | 2020-08-03 | Hearth negative pressure meter measuring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212513451U (en) |
-
2020
- 2020-08-03 CN CN202021582640.5U patent/CN212513451U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A measuring structure of furnace negative pressure gauge Effective date of registration: 20220124 Granted publication date: 20210209 Pledgee: Qingshan Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN JIAN'AN PETROCHEMICAL ENGINEERING Co.,Ltd. Registration number: Y2022420000028 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210209 Pledgee: Qingshan Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN JIAN'AN PETROCHEMICAL ENGINEERING Co.,Ltd. Registration number: Y2022420000028 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |