CN116609003A - Pressure test detection mechanism and method for lower valve box lower seal assembly of blast furnace equipment - Google Patents
Pressure test detection mechanism and method for lower valve box lower seal assembly of blast furnace equipment Download PDFInfo
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- CN116609003A CN116609003A CN202310355575.4A CN202310355575A CN116609003A CN 116609003 A CN116609003 A CN 116609003A CN 202310355575 A CN202310355575 A CN 202310355575A CN 116609003 A CN116609003 A CN 116609003A
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- Prior art keywords
- detection
- pressure
- sealing
- seal assembly
- blast furnace
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- 238000001514 detection method Methods 0.000 title claims abstract description 68
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 18
- 238000007789 sealing Methods 0.000 claims abstract description 65
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 239000004519 grease Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010998 test method Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the technical field of blast furnace equipment, and relates to a pressure test mechanism and a pressure test method for a lower seal assembly of a lower valve box of blast furnace equipment, wherein the pressure test mechanism for the lower seal assembly of the lower valve box of the blast furnace equipment is used for dynamic and static seal detection, and comprises a detection box, and an air cavity for pressurizing detection is arranged in the detection box; one side of the detection box is provided with a connecting flange for installing a lower seal assembly; an air inlet pipeline communicated with the air cavity is arranged on the other side of the detection box, and a pressure gauge and a valve are arranged on the air inlet pipeline; the lower sealing assembly is arranged on the mounting hole and is in sealing connection with the side wall of the detection box; and (5) pressurizing the air cavity to detect each sealing point of the lower seal assembly. The pressure test detection mechanism provided by the invention realizes the tightness detection of the lower seal assembly before assembly, can improve the safety of the lower seal assembly, reduce the failure rate, improve the production efficiency and reduce the overhaul shutdown rate.
Description
Technical Field
The invention belongs to the technical field of blast furnace equipment, and relates to a pressure test detection mechanism and method for a lower valve box lower seal assembly of blast furnace equipment.
Background
The lower box seal assembly in the blast furnace installation is generally referred to as a lower box bottom seal structure for preventing leakage of molten iron from the lower box. The sealing system consists of a sewer mouth sealant, a sealing cover, a sealing disk and the like. The lower valve box lower sealing assembly is often influenced by severe working conditions such as high temperature, high pressure, corrosion and the like, and high-temperature and corrosion-resistant materials such as refractory materials, high-temperature-resistant rubber and the like are required to be selected. Meanwhile, in the process of using and maintaining, attention needs to be paid to whether the sealing performance of the sealant and the sealing disc is good or not so as to ensure the normal operation of the lower valve box lower seal assembly.
The lower sealing assembly belongs to the key equipment of the blast furnace, the quality relation production is smooth, the machine is used without pre-detection at present, and the sealing performance of the lower sealing assembly has uncertainty. The lower sealing assembly bears the pressure in the blast furnace in the production process, and has gas such as coal gas, nitrogen and the like, so that the leakage is avoided, the hazard is high, and the tightness detection is required to be carried out on the lower sealing assembly before the assembly so as to ensure the safety during the use.
Disclosure of Invention
In view of the above, the invention aims to solve the problem of tightness detection of a lower seal assembly of a lower valve box of a blast furnace, and provides a pressure test detection mechanism and a pressure test detection method for the lower seal assembly of the lower valve box of blast furnace equipment.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the pressure test detection mechanism for the lower sealing assembly of the lower valve box of the blast furnace equipment comprises a detection box, wherein an air cavity for pressurizing detection is arranged in the detection box; one side of the detection box is provided with a connecting flange for installing a lower seal assembly; an air inlet pipeline communicated with the air cavity is arranged on the other side of the detection box, and a pressure gauge and a valve are arranged on the air inlet pipeline; the lower sealing assembly is arranged on the mounting hole and is in sealing connection with the side wall of the detection box; and (5) pressurizing the air cavity to detect each sealing point of the lower seal assembly.
Further, a sealing ring is arranged between the connecting flange and the contact end face of the lower sealing assembly.
Further, the bottom of detection case is equipped with rag bolt to fix through rag bolt.
The pressure test detection method for the lower valve box seal assembly of the blast furnace equipment adopts the pressure test detection mechanism for the lower valve box seal assembly of the blast furnace equipment to carry out seal detection, and comprises the following steps:
1) The lower sealing assembly is arranged on the connecting flange, the air cavity is communicated with the inner hole of the lower sealing assembly, and the lower sealing assembly is sealed through the sealing ring;
2) Static pressure detection: compressed air is added into the air cavity through the air inlet pipeline, the pressure is controlled to be 1.5-2 times of the working condition pressure, the valve is closed, the pressure is maintained for 30 minutes, each sealing point is respectively detected, and whether the pressure value of the pressure gauge is reduced or not is judged;
3) Dynamic pressure detection: the pressure of the air cavity is kept to be 1.5-2 times of the working condition pressure, and the tightness of the sealing point at the side of the inner hole in a moving state is detected by driving the tilting oil cylinder of the lower seal assembly to reciprocate in the hole; and the sealing performance of the sealing point at the outer circle side of the shaft in a moving state is detected by rotating the crank arm to rotate the oil cylinder to rotate 90 degrees in a reciprocating manner.
Further, the pressure test in the detection process is not higher than 10MPa.
Further, in the sealing detection process, whether leakage and leakage positions are judged through hearing, grease smearing and washing powder water.
Further, in the testing process, if the pressure of the barometer is not reduced, the barometer is qualified, otherwise, the barometer is unqualified, and the leakage point is maintained.
The invention has the beneficial effects that:
the pressure test detection mechanism provided by the invention realizes the tightness detection of the lower seal assembly before assembly, can improve the safety of the lower seal assembly, reduce the failure rate, improve the production efficiency and reduce the overhaul shutdown rate.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a pressure test and detection mechanism for a lower valve box lower seal assembly of blast furnace equipment.
Marking: 1-a connecting flange; 6-a bottom plate; 7-anchor bolts; 8-a lower seal assembly mounting hole; 9-connecting bolts; 10-a lower crank arm; 11-a sealing ring; 18-tilting oil cylinder; 19-turning arm rotating oil cylinders; 20-an air inlet pipeline; 21-a pressure gauge; 23-valve; 2. 3, 4, 5 and 24 are box body panels; 12. 13, 14, 15, 16, 17, 20 are seal detection points.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, a pressure test mechanism for a lower valve box lower seal assembly of a blast furnace device comprises a test box, wherein the test box is formed by welding a box panel 2, a box panel 3, a box panel 4, a box panel 5, a box panel 24 and a bottom plate 6. An air cavity for pressurizing detection is arranged in the detection box; one side of the detection box is provided with a connecting flange 1, and a lower seal assembly mounting hole 8 on the lower seal assembly is connected to the connecting flange 1 through a connecting bolt 9; an air inlet pipeline 20 communicated with the air cavity is arranged on the other side of the detection box, and a pressure gauge 21 and a valve 23 are arranged on the air inlet pipeline 20; the lower sealing assembly is arranged on the mounting hole and is in sealing connection with the side wall of the detection box; and (5) pressurizing the air cavity to detect each sealing point of the lower seal assembly.
Wherein, be provided with the sealing washer between flange 1 and the contact terminal surface of lower close assembly. The bottom plate 6 of the detection box is provided with anchor bolts 7 and is fixed through the anchor bolts 7.
The pressure test detection method for the lower valve box seal assembly of the blast furnace equipment adopts the pressure test detection mechanism for the lower valve box seal assembly of the blast furnace equipment to carry out seal detection, and comprises the following steps:
1) The lower sealing assembly is arranged on the connecting flange 1, the lower sealing crank arm 10 extends into the air cavity, and the air cavity is communicated with the inner hole of the lower sealing assembly and is sealed by a sealing ring;
2) Static pressure detection: compressed air is added into the air cavity through the air inlet pipeline 20, the pressure is controlled to be 1.5-2 times of the working condition pressure, the valve 23 is closed, the pressure is maintained for 30 minutes, the sealing ring 11, the sealing detection point 12, the sealing detection point 13, the sealing detection point 14, the sealing detection point 15, the sealing detection point 16, the sealing detection point 17 and the sealing detection point 20 are respectively detected, and whether the pressure value of the pressure gauge 21 is reduced or not is checked;
3) Dynamic pressure detection: the pressure of the air cavity is 1.5-2 times of the pressure of the working condition, and the tightness of the sealing point at the side of the inner hole in a moving state is detected by driving the tilting oil cylinder 18 of the lower seal assembly to reciprocate in the hole; the sealing performance of the sealing point at the outer circle side of the shaft in a moving state is detected by rotating the crank arm rotary oil cylinder 19 to rotate 90 degrees in a reciprocating manner.
In the sealing detection process, whether leakage and leakage positions are judged through hearing, grease smearing and washing powder water.
In the test process, if the pressure of the barometer is not reduced, the barometer is qualified, otherwise, the barometer is unqualified, and the leakage point is maintained.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a close assembly pressure testing detection mechanism under blast furnace equipment lower valve box which characterized in that: the device comprises a detection box, wherein an air cavity for pressurizing detection is arranged in the detection box; one side of the detection box is provided with a connecting flange for installing a lower seal assembly; an air inlet pipeline communicated with the air cavity is arranged on the other side of the detection box, and a pressure gauge and a valve are arranged on the air inlet pipeline; the lower sealing assembly is arranged on the mounting hole and is in sealing connection with the side wall of the detection box; and (5) pressurizing the air cavity to detect each sealing point of the lower seal assembly.
2. The blast furnace equipment lower valve box lower seal assembly pressure test mechanism according to claim 1, wherein: and a sealing ring is arranged between the connecting flange and the contact end surface of the lower sealing assembly.
3. The blast furnace equipment lower valve box lower seal assembly pressure test mechanism according to claim 2, wherein: the bottom of detection case is equipped with rag bolt to fix through rag bolt.
4. A pressure test detection method for a lower valve box lower seal assembly of blast furnace equipment is characterized by comprising the following steps of: a sealing test using the pressure test mechanism for a lower valve box seal assembly of a blast furnace equipment according to any one of claims 1 to 3, comprising the steps of:
1) The lower sealing assembly is arranged on the connecting flange, the air cavity is communicated with the inner hole of the lower sealing assembly, and the lower sealing assembly is sealed through the sealing ring;
2) Static pressure detection: compressed air is added into the air cavity through the air inlet pipeline, the pressure is controlled to be 1.5-2 times of the working condition pressure, the valve is closed, the pressure is maintained for 30 minutes, each sealing point is respectively detected, and whether the pressure value of the pressure gauge is reduced or not is judged;
3) Dynamic pressure detection: the pressure of the air cavity is kept to be 1.5-2 times of the working condition pressure, and the tightness of the sealing point at the side of the inner hole in a moving state is detected by driving the tilting oil cylinder of the lower seal assembly to reciprocate in the hole; and the sealing performance of the sealing point at the outer circle side of the shaft in a moving state is detected by rotating the crank arm to rotate the oil cylinder to rotate 90 degrees in a reciprocating manner.
5. The method for detecting the pressure test of the lower valve box seal assembly of the blast furnace equipment according to claim 4, wherein the method comprises the following steps of: in the sealing detection process, whether leakage and leakage positions are judged through hearing, grease smearing and washing powder water.
6. The method for detecting the pressure test of the lower valve box seal assembly of the blast furnace equipment according to claim 4, wherein the method comprises the following steps of: in the test process, if the pressure of the barometer is not reduced, the barometer is qualified, otherwise, the barometer is unqualified, and the leakage point is maintained.
7. The method for detecting the pressure test of the lower valve box seal assembly of the blast furnace equipment according to claim 4, wherein the method comprises the following steps of: and the pressure test is not higher than 10MPa in the detection process.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310355575.4A CN116609003A (en) | 2023-04-04 | 2023-04-04 | Pressure test detection mechanism and method for lower valve box lower seal assembly of blast furnace equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310355575.4A CN116609003A (en) | 2023-04-04 | 2023-04-04 | Pressure test detection mechanism and method for lower valve box lower seal assembly of blast furnace equipment |
Publications (1)
Publication Number | Publication Date |
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CN116609003A true CN116609003A (en) | 2023-08-18 |
Family
ID=87680698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202310355575.4A Pending CN116609003A (en) | 2023-04-04 | 2023-04-04 | Pressure test detection mechanism and method for lower valve box lower seal assembly of blast furnace equipment |
Country Status (1)
Country | Link |
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CN (1) | CN116609003A (en) |
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2023
- 2023-04-04 CN CN202310355575.4A patent/CN116609003A/en active Pending
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