CN116179830A - Low-yield-ratio seamless steel tube processing equipment and process for oil and gas exploitation - Google Patents
Low-yield-ratio seamless steel tube processing equipment and process for oil and gas exploitation Download PDFInfo
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- CN116179830A CN116179830A CN202310135661.4A CN202310135661A CN116179830A CN 116179830 A CN116179830 A CN 116179830A CN 202310135661 A CN202310135661 A CN 202310135661A CN 116179830 A CN116179830 A CN 116179830A
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- steel tube
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 259
- 239000010959 steel Substances 0.000 title claims abstract description 259
- 238000000034 method Methods 0.000 title claims description 14
- 230000008569 process Effects 0.000 title claims description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 140
- 238000010791 quenching Methods 0.000 claims abstract description 102
- 230000000171 quenching effect Effects 0.000 claims abstract description 99
- 238000005192 partition Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 19
- 238000004321 preservation Methods 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a low yield ratio seamless steel tube processing device for oil and gas exploitation, which comprises a base, a steel tube placing chamber, a heating chamber and a quenching chamber, wherein the steel tube placing chamber, the heating chamber and the quenching chamber are arranged on the base, the left end and the right end of the steel tube placing chamber are open ends, the steel tube placing chamber is connected to the base in an opening-closing way, the heating chamber and the quenching chamber are respectively and movably connected to the base at the left end and the right end of the steel tube placing chamber, one end of the heating chamber and one end of the quenching chamber are fixed with a sealing plate, the other end of the heating chamber and the quenching chamber are open ends, a partition plate is respectively and rotatably connected between the steel tube placing chamber, the heating chamber and the quenching chamber, and the processing technology is further disclosed: when the steel pipe is subjected to heat treatment, the quenching chamber and the heating chamber alternately enter the steel pipe placing chamber to heat treat the steel pipe, and the invention can heat treat the steel pipe in batches and has the advantages of relatively small volume, good heat treatment effect and high efficiency.
Description
Technical Field
The invention relates to a processing device and a processing technology of a low-yield-ratio seamless steel tube for oil and gas exploitation, in particular to a heat treatment device and a processing technology of a low-yield-ratio seamless steel tube for oil and gas exploitation.
Background
The yield ratio reflects the cold deformation capacity and plastic deformation capacity of the steel pipe, and in the prior art, the yield ratio of the seamless steel pipe for oil and gas exploitation can reach 650MPa, wherein the heat treatment process plays a crucial role in the manufacturing process.
The steel pipe is processed by adopting on-line heat treatment equipment at present, the on-line heat treatment equipment generally comprises two or more groups of cooling equipment and heating furnaces, and the steel pipe is at least subjected to four working procedures of cooling, heating, re-cooling and heat preservation;
in addition, the on-line heat treatment equipment still carries out independent heat treatment on each steel pipe in fact, and has the defects of large occupied area, high energy consumption and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the low yield ratio seamless steel tube processing equipment for oil and gas exploitation, which can carry out batch heat treatment, has relatively small volume, good heat treatment effect and high efficiency.
The technical scheme of the invention is as follows: a low yield ratio seamless steel tube processing device for oil and gas exploitation comprises a base, a steel tube placing chamber, a heating chamber and a quenching chamber, wherein the steel tube placing chamber, the heating chamber and the quenching chamber are arranged on the base;
the steel pipe placing chamber, the heating chamber and the quenching chamber all comprise heat preservation shells with inverted concave sections;
the left end and the right end of the steel tube placing chamber are open ends, the lower end of the rear end of the steel tube placing chamber is hinged with the base, the bottom of the front end of the steel tube placing chamber is abutted against the base, the steel tube placing chamber is connected to the base in an opening-closing manner, and the rear end of the steel tube placing chamber is also connected with a first driving mechanism for driving the steel tube placing chamber to open and close;
the heating chamber and the quenching chamber are respectively and movably connected to bases at the left end and the right end of the steel pipe placing chamber, a pair of guide rails are arranged on the bases, guide grooves corresponding to the guide rails are respectively formed in the bottoms of the two sides of the heating chamber and the quenching chamber, the guide grooves are matched with the corresponding guide rails, a sealing plate is fixed at one end, far away from the steel pipe placing chamber, of the heating chamber and the quenching chamber, a second driving mechanism for driving the heating chamber and the quenching chamber to move is connected to the outer side of the sealing plate, and one end, facing the steel pipe placing chamber, of the heating chamber and the quenching chamber is an open end;
the bases at the left end and the right end of the steel pipe placing chamber are respectively and rotatably connected with a baffle plate, the two baffle plates are respectively connected with independent third driving mechanisms, and the two baffle plates are respectively arranged between the steel pipe placing chamber and the heating chamber and between the steel pipe placing chamber and the open ends of the quenching chamber so as to keep the sealing of the two ends of the steel pipe placing chamber and the open ends of the heating chamber and the quenching chamber;
when the steel pipe is subjected to heat treatment, a partition plate facing one end of the heating chamber is lifted, the other partition plate keeps sealing the steel pipe placing chamber, the heating chamber enters the steel pipe placing chamber, and a sealing plate of the heating chamber seals the open end of the steel pipe placing chamber; when the steel pipe is quenched, a partition plate facing one end of the quenching chamber is lifted, and the other partition plate keeps sealing the steel pipe placing chamber; when the steel pipe is not subjected to heat treatment and is not subjected to quenching, the heating chamber and the quenching chamber are respectively positioned at two ends of the outer side of the steel pipe placing chamber, and the two partition plates are lowered to respectively seal the two ends of the steel pipe placing chamber and the open ends of the heating chamber and the quenching chamber;
and one sides of the steel tube placing chamber and the heating chamber are respectively provided with a corresponding interface, and a plurality of ceramic partition strips are embedded on the bases at two ends of the steel tube placing chamber.
Furthermore, a plurality of electric heating pipes are arranged in the steel pipe placing chamber at equal distance, heat exchange pipes are arranged in the quenching chamber in a bending way, a plurality of spray heads are further arranged at the top of the quenching chamber, the heat exchange pipes are connected with the liquid nitrogen storage tank through connecting pipes and pump bodies, and each spray head is connected with the water storage tank through the connecting pipes and the pump bodies.
Further, the base is formed by a concrete foundation, a heat preservation brick layer, a sand layer and a steel plate layer from bottom to top in sequence, the bottom of the guide rail is provided with a fixing part, the fixing part is poured in the concrete foundation, and the upper end of the guide rail is exposed out of the top of the steel plate layer.
Specifically, the top section of the guide rail is spherical, and the bottoms of the heating chambers or the quenching chambers on two sides of the guide groove are also provided with downward convex guard plates.
Further, a sunken area is further arranged on the base corresponding to the steel pipe placing chamber, a plurality of drainage grooves are further arranged on the sunken area, and each drainage groove penetrates out of the bottom of the base to be connected with the water storage groove.
Further, a guide slope is arranged at the front end of the base corresponding to the steel tube placing chamber.
Specifically, the bottom section at both ends is the arc around the steel pipe placing chamber, still have two arc grooves that correspond steel pipe placing chamber bottom on the base, when square pipe placing chamber falls down to detain and arranges on the base, the bottom at both ends around the steel pipe placing chamber and arc groove assorted.
Specifically, the first driving mechanism is a hydraulic cylinder, the second driving mechanism is a trolley, and the third driving mechanism is a gear motor and a gear set.
Furthermore, graphite sleeves are also fixed at the open end parts of the steel tube placing chamber, the heating chamber and the quenching chamber.
A processing technology for carrying out heat treatment on a steel pipe by utilizing the processing equipment comprises the following processing steps:
firstly, placing a frame body for placing a steel pipe to be heat treated on a base of a corresponding steel pipe placing chamber, and then lowering the steel pipe placing chamber to enable the steel pipe and the frame body to be in a closed state in the steel pipe placing chamber;
after the steel pipe and the frame body are placed, a partition plate facing one end of the quenching chamber is lifted, the quenching chamber moves towards the direction of the steel pipe placing chamber until the quenching chamber completely enters the steel pipe placing chamber and coats the steel pipe and the frame body in the steel pipe placing chamber, at the moment, a spray head in the quenching chamber is firstly opened, cooling water is sprayed on the steel pipe for 1 minute, then liquid nitrogen is introduced into a heat exchange pipe in the quenching chamber, and the steel pipe is rapidly cooled to below 550 ℃;
when the steel pipe is cooled for the first time, the heating chamber begins to be preheated;
resetting the quenching chamber after the steel pipe is cooled for the first time, resetting a baffle plate facing one end of the quenching chamber, lifting the baffle plate facing one end of the heating chamber, moving the heating chamber into the steel pipe placing chamber, and then performing heat treatment on the steel pipe by the heating chamber, wherein the process temperature of the heat treatment is 780 ℃, and preserving heat for 1-2 minutes;
fourthly, after the steel pipe is subjected to heat treatment, resetting the heating chamber, resetting the partition plate facing one end of the heating chamber, and then moving the quenching chamber into the steel pipe placing chamber again to quench the steel pipe to 200-400 ℃;
step five, after the second cooling of the steel pipe is finished, the quenching chamber is removed again, and the heating chamber is removed again into the steel pipe placing chamber, so that the steel pipe is kept at 300-400 ℃ for 5 minutes;
and step six, after heat preservation is finished, the heating chamber moves out of the steel pipe placing chamber, the steel pipe placing chamber is opened, and the steel pipe and the frame body move out of the base, so that heat treatment of the steel pipe is completed.
The beneficial effects of the invention are as follows:
1. the invention can carry out heat treatment on the seamless steel pipes for oil gas exploitation in batches, can process 20-50 seamless steel pipes simultaneously according to the design of equipment specifications, has high processing efficiency, removes the restriction on the processing beats of the prior working procedure, and can improve the processing efficiency of the whole steel pipe production line.
2. Because the heating chamber and the cooling chamber alternately move into the steel pipe placing chamber to carry out heat treatment on the steel pipe, the steel pipe does not need to move in the heat treatment process, and the steel pipe can be prevented from deforming due to movement and collision in the heat treatment process.
3. The heating chamber, the steel pipe placing chamber and the quenching chamber are sequentially arranged on the base, so that the installation area is at least saved by 1/4 compared with the traditional online heat treatment equipment, and the volume of the invention has more remarkable advantages compared with the online heat treatment equipment provided with more heating and cooling steps.
4. In the heat treatment process, the steel pipe is positioned in the two layers of heat preservation shells no matter being heated or cooled, has less heat exchange with the outside, and has certain energy-saving effect.
5. After the steel pipe is heated each time, the high-temperature air in the steel pipe placing chamber can be returned to the closed heating chamber for heat preservation, so that the energy is saved.
6. The cooling of the steel pipe adopts a mode of water cooling firstly and then heat exchange and quenching by liquid nitrogen, the cooling speed of the steel pipe is high, and the heat treatment effect of the steel pipe is improved.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the structure of the heating chamber of the present invention entering the steel pipe placing chamber;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
fig. 5 is an enlarged view of a portion B in fig. 4;
FIG. 6 is a schematic view of the junction of the heating or quenching chamber and the steel pipe placement chamber of the present invention.
In the figure: the steel tube cooling device comprises a base 1, a steel tube placing chamber 2, a heating chamber 3, a quenching chamber 4, a first driving mechanism 5, a guide rail 6, a sealing plate 7, a second driving mechanism 8, a partition plate 9, a third driving mechanism 10, an interface 11, a heat preservation brick layer 12, a sand layer 13, a steel plate layer 14, a guard plate 15, a drainage groove 16, a guide slope 17, an arc-shaped groove 18, a heat preservation layer 19 and a graphite sleeve 20.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Referring to fig. 1-6, a low yield ratio seamless steel tube processing device for oil and gas exploitation comprises a base 1, a steel tube placing chamber 2 arranged on the base 1, a heating chamber 3 and a quenching chamber 4;
the steel pipe placing chamber 2, the heating chamber 3 and the quenching chamber 4 all comprise heat preservation shells with inverted concave sections;
the left end and the right end of the steel tube placing chamber 2 are open ends, the lower end of the rear end of the steel tube placing chamber 2 is hinged with the base 1, the bottom of the front end of the steel tube placing chamber 2 is abutted against the base 1, the steel tube placing chamber 2 is connected to the base 1 in an opening-closing manner, and the rear end of the steel tube placing chamber 2 is also connected with a first driving mechanism 5 for driving the steel tube placing chamber 2 to open-close;
the heating chamber 3 and the quenching chamber 4 are respectively and movably connected to the base 1 at the left end and the right end of the steel pipe placing chamber 2, a pair of guide rails 6 are arranged on the base 1, guide grooves corresponding to the guide rails 6 are respectively arranged at the bottoms of the two sides of the heating chamber 3 and the quenching chamber 4, the guide grooves are matched with the corresponding guide rails 6, a sealing plate 7 is fixed at one end, far away from the steel pipe placing chamber 2, of the heating chamber 3 and the quenching chamber 4, a second driving mechanism 8 for driving the heating chamber 3 and the quenching chamber 4 to move is connected to the outer side of the sealing plate 7, and one end, facing the steel pipe placing chamber 2, of the heating chamber 3 and the quenching chamber 4 is an open end;
the base 1 at the left end and the right end of the steel pipe placing chamber 2 is also respectively and rotatably connected with a partition plate 9, the two partition plates 9 are respectively connected with independent third driving mechanisms 10, and the two partition plates 9 are respectively arranged between the steel pipe placing chamber 2 and the heating chamber 3 and between the open ends of the steel pipe placing chamber 2 and the quenching chamber 4 so as to keep the sealing of the two ends of the steel pipe placing chamber 2 and the open ends of the heating chamber 3 and the quenching chamber 4;
when the steel pipe is subjected to heat treatment, the partition plate 9 facing one end of the heating chamber 3 is lifted, the other partition plate 9 keeps sealing the steel pipe placing chamber 2, the heating chamber 3 enters the steel pipe placing chamber 2, and the sealing plate 7 of the heating chamber 3 seals the open end of the steel pipe placing chamber 2; when the steel pipe is quenched, the partition plate 9 facing one end of the quenching chamber 4 is lifted, the other partition plate 9 keeps sealing the steel pipe placing chamber 2, the quenching chamber 4 enters the steel pipe placing chamber 2, and the sealing plate 7 of the quenching chamber 4 seals the open end of the steel pipe placing chamber 2; when the steel pipe is not subjected to heat treatment and is not quenched, the heating chamber 3 and the quenching chamber 4 are respectively positioned at two ends of the outer side of the steel pipe placing chamber 2, and the two partition plates 9 are lowered to respectively seal the two ends of the steel pipe placing chamber 2 and the open ends of the heating chamber 3 and the quenching chamber 4;
one side of the steel tube placing chamber 2 and one side of the heating chamber 3 are respectively provided with a corresponding interface 11, and the functions of the interfaces 11 are as follows: after the steel pipe is heated, high-temperature gas in the steel pipe placing chamber 2 can be conveyed back into the heating chamber 3 in a closed state through the connecting pipe and the axial flow fan for heat preservation, so that the energy consumption is reduced;
the base 1 at two ends of the steel tube placing chamber 2 is also embedded with a plurality of ceramic partition strips so as to prevent the steel tube placing chamber 2, the heating chamber 3 and the quenching chamber 4 from generating excessive heat exchange through the base 1.
In another embodiment, a plurality of electric heating pipes are equidistantly arranged in the steel pipe placing chamber 2, heat exchange pipes are arranged in the quenching chamber 4 in a bending way, a plurality of spray heads are further arranged at the top of the quenching chamber 4, the heat exchange pipes are connected with a liquid nitrogen storage tank through connecting pipes and a pump body, and each spray head is connected with a water storage tank through the connecting pipes and the pump body.
The technological process of the structure is as follows: in the initial state, the heating chamber 3 and the quenching chamber 4 are both positioned on the base 1 outside the steel pipe placing chamber 2, the steel pipe placing chamber 2 is lifted to be in an open state, and the two partition plates 9 are in a descending state;
the worker uses fork truck and other tools to place the frame body for placing the steel pipe to be heat treated on the base 1 corresponding to the steel pipe placing chamber 2, at the moment, the steel pipe is just shaped, and the temperature is about 1250 ℃; then the steel pipe placing chamber 2 descends to enable the steel pipe and the frame body to be in the steel pipe placing chamber 2 in a closed state;
after the steel pipe and the frame body are placed, a partition plate 9 facing one end of the quenching chamber 4 is lifted, the quenching chamber 4 moves towards the direction of the steel pipe placing chamber 2 until the quenching chamber 4 completely enters the steel pipe placing chamber 2 and coats the steel pipe and the frame body in the steel pipe placing chamber, at the moment, a spray head in the quenching chamber 4 is firstly opened, cooling water is sprayed on the steel pipe for 1 minute, then liquid nitrogen is introduced into a heat exchange pipe in the quenching chamber 4, and the steel pipe is rapidly cooled to below 550 ℃; when the steel pipe is water-cooled, the air pipe connected with the axial flow fan can be used for connecting the interfaces 11 on two sides of the steel pipe placing chamber 2, and steam generated when the steel pipe is water-cooled is pumped out;
when the steel pipe is cooled for the first time, the heating chamber 3 starts preheating;
after the steel pipe is cooled for the first time, the quenching chamber 4 is reset, a partition plate 9 facing one end of the heating chamber 3 is lifted, the heating chamber 3 is moved into the steel pipe placing chamber 2, then the heating chamber 3 carries out heat treatment on the steel pipe, and the process temperature of the heat treatment is 780 ℃ and the heat preservation is carried out for 1-2 minutes;
after the steel pipe is subjected to heat treatment, the heating chamber 3 is reset, the partition plate 9 facing one end of the heating chamber 3 is reset, and at the moment, high-temperature air in the steel pipe placing chamber 2 can be returned into the heating chamber 3 through the connecting pipe and the axial flow fan for heat preservation; then the quenching chamber 4 is moved into the steel pipe placing chamber 2 again to quench the steel pipe to 200-400 ℃;
after the second cooling of the steel pipe is finished, the quenching chamber 4 is removed again, and the heating chamber 3 is removed again into the steel pipe placing chamber 2, so that the steel pipe is kept at the temperature of 300-400 ℃ for 5 minutes;
after heat preservation is finished, the heating chamber 3 moves out of the steel pipe placing chamber 2, the steel pipe placing chamber 2 is opened, a worker moves out of the base 1 by using tools such as a forklift and the like, and heat treatment of the steel pipe is completed.
In another embodiment, as shown in fig. 5, the base 1 is composed of a concrete foundation, a heat insulation brick layer 12, a sand layer 13 and a steel plate layer 14 in sequence from bottom to top, the bottom of the guide rail 6 is provided with a fixing part, the fixing part is poured in the concrete foundation, and the upper end of the guide rail 6 is exposed out of the top of the steel plate layer 14; in the structure, the insulating brick layer 12 mainly plays a role in heat preservation, and the sand layer 13 plays a role in protecting the insulating brick layer 12 and the concrete layer in consideration of rapid temperature change during heat treatment and quenching treatment of the steel pipe in the steel pipe placing chamber 2, so that cracking of the insulating brick layer and the concrete layer under severe temperature difference is avoided.
In another embodiment, as shown in fig. 5, the top section of the guide rail 6 is spherical, and the bottom of the heating chamber 3 or the quenching chamber 4 at two sides of the guide groove is further provided with a downward convex guard plate 15, so as to avoid excessive heat exchange between the heating chamber 3 or the quenching chamber 4 and the outside, which is beneficial to energy saving.
In another embodiment, as shown in fig. 2, a concave area is further provided on the base 1 corresponding to the steel pipe placing chamber 2, a plurality of drainage grooves 16 are further provided on the concave area, each drainage groove 16 penetrates out of the bottom of the base 1 to be connected with a water storage groove, when the steel pipe is cooled by water after heat treatment, the extracted steam can be recycled by the heat exchanger, and the redundant water is discharged into the water storage groove along the drainage groove 16 to wait for recycling.
In another embodiment, as shown in fig. 1, a guiding slope 17 is further provided at the front end of the base 1 corresponding to the steel pipe placing chamber 2, so as to facilitate the input and output of the steel pipe and the frame body.
In another embodiment, as shown in fig. 5, the cross sections of the bottoms of the front and rear ends of the steel tube placing chamber 2 are arc-shaped, the base 1 is further provided with two arc-shaped grooves 18 corresponding to the bottoms of the steel tube placing chamber 2, when the square tube placing chamber is placed on the base 1 in a descending buckle mode, the bottoms of the front and rear ends of the steel tube placing chamber 2 are matched with the arc-shaped grooves 18, and therefore heat exchange with the outside when the steel tube is heated or quenched is reduced.
In another embodiment, the first driving mechanism 5 is a hydraulic cylinder, the second driving mechanism 8 is a trolley, and the third driving mechanism 10 is a gear motor and a gear set.
In another embodiment, as shown in fig. 6, the middle parts of the closing plate 7 and the partition plate 9 are also provided with a heat insulation layer 19.
In another embodiment, as shown in fig. 6, the open end parts of the steel pipe placing chamber 2, the heating chamber 3 and the quenching chamber 4 are further fixed with a graphite sleeve 20, and the graphite sleeve 20 has a self-lubricating function to avoid rapid abrasion of the partition plate 9 on one hand and has a certain sealing function to improve the sealing performance when the partition plate 9 is connected with the end parts of the steel pipe placing chamber 2, the heating chamber 3 or the quenching chamber 4 on the other hand.
In another embodiment, the heating chamber 3 and the quenching chamber 4 have a length smaller than the length of the steel pipe placement chamber 2, and the volume of the steel pipe placement chamber 2 is larger than the volumes of the heating chamber 3 and the quenching chamber 4.
Claims (10)
1. The low-yield-ratio seamless steel tube processing equipment for oil and gas exploitation is characterized by comprising a base (1), a steel tube placing chamber (2), a heating chamber (3) and a quenching chamber (4), wherein the steel tube placing chamber (2), the heating chamber (3) and the quenching chamber (4) are arranged on the base (1);
the steel pipe placing chamber (2), the heating chamber (3) and the quenching chamber (4) all comprise heat preservation shells with inverted concave sections;
the left end and the right end of the steel tube placing chamber (2) are open ends, the lower end of the rear end of the steel tube placing chamber (2) is hinged with the base (1), the bottom of the front end of the steel tube placing chamber (2) is abutted against the base (1), the steel tube placing chamber (2) is connected to the base (1) in an opening and closing manner, and the rear end of the steel tube placing chamber (2) is also connected with a first driving mechanism (5) for driving the steel tube placing chamber (2) to open and close;
the heating chamber (3) and the quenching chamber (4) are respectively and movably connected to the bases (1) at the left end and the right end of the steel pipe placing chamber (2), a pair of guide rails (6) are arranged on the bases (1), guide grooves corresponding to the guide rails (6) are respectively arranged at the bottoms of the two sides of the heating chamber (3) and the quenching chamber (4), the guide grooves are matched with the corresponding guide rails (6), a sealing plate (7) is fixed at one end, far away from the steel pipe placing chamber (2), of the heating chamber (3) and the quenching chamber (4), a second driving mechanism (8) for driving the heating chamber (3) and the quenching chamber (4) to move is connected to the outer side of the sealing plate (7), and one end, facing the steel pipe placing chamber (2), of the heating chamber (3) and the quenching chamber (4) is an open end;
the base (1) at the left end and the right end of the steel tube placing chamber (2) is also respectively and rotatably connected with a partition board (9), the two partition boards (9) are respectively connected with independent third driving mechanisms (10), and the two partition boards (9) are respectively arranged between the steel tube placing chamber (2) and the heating chamber (3) and between the open ends of the steel tube placing chamber (2) and the quenching chamber (4) so as to keep the sealing of the two ends of the steel tube placing chamber (2) and the open ends of the heating chamber (3) and the quenching chamber (4);
when the steel pipe is subjected to heat treatment, a partition plate (9) facing one end of the heating chamber (3) is lifted, the other partition plate (9) keeps sealing the steel pipe placing chamber (2), the heating chamber (3) enters the inside of the steel pipe placing chamber (2), and a sealing plate (7) of the heating chamber (3) seals the open end of the steel pipe placing chamber (2); when the steel pipe is quenched, a partition plate (9) facing one end of the quenching chamber (4) is lifted, the other partition plate (9) keeps sealing the steel pipe placing chamber (2), the quenching chamber (4) enters the steel pipe placing chamber (2), and a sealing plate (7) of the quenching chamber (4) seals the open end of the steel pipe placing chamber (2); when the steel pipe is not subjected to heat treatment and is not quenched, the heating chamber (3) and the quenching chamber (4) are respectively positioned at two ends of the outer side of the steel pipe placing chamber (2), and the two partition boards (9) are lowered to respectively seal the two ends of the steel pipe placing chamber (2) and the open ends of the heating chamber (3) and the quenching chamber (4);
one side of the steel tube placing chamber (2) and one side of the heating chamber (3) are respectively provided with a corresponding interface (11), and a plurality of ceramic partition strips are embedded on the bases (1) at two ends of the steel tube placing chamber (2).
2. The low yield ratio seamless steel tube processing equipment for oil and gas exploitation according to claim 1, wherein a plurality of electric heating tubes are equidistantly arranged in the steel tube placing chamber (2), heat exchange tubes are arranged in the quenching chamber (4) in a bending mode, a plurality of spray heads are further arranged at the top of the quenching chamber (4), the heat exchange tubes are connected with a liquid nitrogen storage tank through connecting pipes and pump bodies, and each spray head is connected with a water storage tank through a connecting pipe and a pump body.
3. The low yield ratio seamless steel tube processing equipment for oil and gas exploitation according to claim 2, wherein the base (1) sequentially comprises a concrete foundation, a heat insulation brick layer (12), a sand layer (13) and a steel plate layer (14) from bottom to top, the bottom of the guide rail (6) is provided with a fixing part, the fixing part is poured in the concrete foundation, and the upper end of the guide rail (6) is exposed out of the top of the steel plate layer (14).
4. A low yield ratio seamless steel pipe processing apparatus for oil and gas exploitation according to claim 3, wherein the top section of the guide rail (6) is spherical, and the bottom of the heating chamber (3) or the quenching chamber (4) at two sides of the guide groove is further provided with a downward convex guard plate (15).
5. The low yield ratio seamless steel tube processing equipment for oil and gas exploitation according to claim 4, wherein a concave area is further arranged on the base (1) corresponding to the steel tube placing chamber (2), a plurality of drainage grooves (16) are further arranged on the concave area, and each drainage groove (16) penetrates out of the bottom of the base (1) to be connected with a water storage groove.
6. The low yield ratio seamless steel tube processing equipment for oil and gas exploitation according to claim 5, wherein a guide slope (17) is further arranged at the front end of the base (1) corresponding to the steel tube placing chamber (2).
7. The low yield ratio seamless steel tube processing device for oil and gas exploitation according to claim 6, wherein the cross sections of the bottoms of the front end and the rear end of the steel tube placing chamber (2) are arc-shaped, the base (1) is further provided with two arc-shaped grooves (18) corresponding to the bottoms of the steel tube placing chamber (2), and when the square tube placing chamber is downwards buckled on the base (1), the bottoms of the front end and the rear end of the steel tube placing chamber (2) are matched with the arc-shaped grooves (18).
8. A low yield ratio seamless steel pipe processing apparatus for oil and gas exploitation according to claim 7, wherein the first driving mechanism (5) is a hydraulic cylinder, the second driving mechanism (8) is a trolley, and the third driving mechanism (10) is a gear motor and a gear set.
9. A low yield ratio seamless steel tube processing apparatus for oil and gas exploitation according to claim 8, wherein the open end portions of the steel tube placing chamber (2), the heating chamber (3) and the quenching chamber (4) are further fixed with graphite sleeves (20).
10. A process for manufacturing a low yield ratio seamless steel pipe manufacturing apparatus for oil and gas exploitation according to any one of claims 1-9, comprising the steps of:
firstly, placing a frame body for placing a steel pipe to be heat treated on a base of a corresponding steel pipe placing chamber, and then lowering the steel pipe placing chamber to enable the steel pipe and the frame body to be in a closed state in the steel pipe placing chamber;
after the steel pipe and the frame body are placed, a partition plate facing one end of the quenching chamber is lifted, the quenching chamber moves towards the direction of the steel pipe placing chamber until the quenching chamber completely enters the steel pipe placing chamber and coats the steel pipe and the frame body in the steel pipe placing chamber, at the moment, a spray head in the quenching chamber is firstly opened, cooling water is sprayed on the steel pipe for 1 minute, then liquid nitrogen is introduced into a heat exchange pipe in the quenching chamber, and the steel pipe is rapidly cooled to below 550 ℃;
when the steel pipe is cooled for the first time, the heating chamber begins to be preheated;
resetting the quenching chamber after the steel pipe is cooled for the first time, resetting a baffle plate facing one end of the quenching chamber, lifting the baffle plate facing one end of the heating chamber, moving the heating chamber into the steel pipe placing chamber, and then performing heat treatment on the steel pipe by the heating chamber, wherein the process temperature of the heat treatment is 780 ℃, and preserving heat for 1-2 minutes;
fourthly, after the steel pipe is subjected to heat treatment, resetting the heating chamber, resetting the partition plate facing one end of the heating chamber, and then moving the quenching chamber into the steel pipe placing chamber again to quench the steel pipe to 200-400 ℃;
step five, after the second cooling of the steel pipe is finished, the quenching chamber is removed again, and the heating chamber is removed again into the steel pipe placing chamber, so that the steel pipe is kept at 300-400 ℃ for 5 minutes;
and step six, after heat preservation is finished, the heating chamber moves out of the steel pipe placing chamber, the steel pipe placing chamber is opened, and the steel pipe and the frame body move out of the base, so that heat treatment of the steel pipe is completed.
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| CN202310135661.4A CN116179830B (en) | 2023-02-20 | 2023-02-20 | Low-yield-ratio seamless steel tube processing equipment and process for oil and gas exploitation |
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| CN202310135661.4A CN116179830B (en) | 2023-02-20 | 2023-02-20 | Low-yield-ratio seamless steel tube processing equipment and process for oil and gas exploitation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201169605Y (en) * | 2007-12-31 | 2008-12-24 | 南京长江工业炉科技有限公司 | Mobile chamber type annealing stove |
| JP5681253B1 (en) * | 2013-09-13 | 2015-03-04 | 中外炉工業株式会社 | Tube heat treatment equipment |
| CN110129520A (en) * | 2015-09-11 | 2019-08-16 | 光洋热系统股份有限公司 | Annealing device |
| KR20210104291A (en) * | 2020-02-17 | 2021-08-25 | 황우영 | Heat treatment device for heating and cooling at the same time |
| CN216107090U (en) * | 2021-09-06 | 2022-03-22 | 法垄热工技术(上海)有限公司 | Automatic change vacuum heat treatment equipment's hot material transportation module |
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2023
- 2023-02-20 CN CN202310135661.4A patent/CN116179830B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201169605Y (en) * | 2007-12-31 | 2008-12-24 | 南京长江工业炉科技有限公司 | Mobile chamber type annealing stove |
| JP5681253B1 (en) * | 2013-09-13 | 2015-03-04 | 中外炉工業株式会社 | Tube heat treatment equipment |
| CN110129520A (en) * | 2015-09-11 | 2019-08-16 | 光洋热系统股份有限公司 | Annealing device |
| KR20210104291A (en) * | 2020-02-17 | 2021-08-25 | 황우영 | Heat treatment device for heating and cooling at the same time |
| CN216107090U (en) * | 2021-09-06 | 2022-03-22 | 法垄热工技术(上海)有限公司 | Automatic change vacuum heat treatment equipment's hot material transportation module |
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| CN116179830B (en) | 2024-01-23 |
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