CN2926970Y - High-temperature heat exchanger - Google Patents
High-temperature heat exchanger Download PDFInfo
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- CN2926970Y CN2926970Y CN 200620073474 CN200620073474U CN2926970Y CN 2926970 Y CN2926970 Y CN 2926970Y CN 200620073474 CN200620073474 CN 200620073474 CN 200620073474 U CN200620073474 U CN 200620073474U CN 2926970 Y CN2926970 Y CN 2926970Y
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- heat exchanger
- temperature
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- exchanging
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Abstract
The utility model discloses a high temperature heat exchanger, which is used for heat recycling of high temperature smoke. The utility model comprises a heat exchanger body; at the front end of the heat exchanger, a high temperature smoke inlet is arranged; at the back end of the heat exchanger, a high temperature smoke outlet is arranged. The heat exchanger body consists of a high temperature heat exchanger in the front and a low temperature heat exchanger at the back which is communicated with the high temperature heat exchanger. The low temperature heat exchanger is equipped with fittings for an inlet for a shell side; the high temperature heat exchanger consists of first high temperature stage which is in the front, and the second high temperature stage which is at the back communicated with the first high temperature stage. Tube plates are arranged in the first high temperature stage, the second high temperature stage and the low temperature heat exchanger; a hollow interspace connecter is arranged between the first high temperature stage and the second high temperature stage; on the first high temperature stage a fitting for an outlet for the shell side is arranged, so that when the first high temperature stage, which is at a relatively short life expectancy, is broken, only need to replace the first high temperature stage, without needing to replace the whole high temperature stage. In this way the utility model is convenient to maintain and costs be saved.
Description
[technical field]
The utility model relates to a kind of high-temperature heat-exchanging, refers in particular to a kind of high-temperature heat-exchanging that is used for high-temperature flue gas is carried out heat recovery.
[background technology]
High-temperature heat-exchanging be used for to the big flow high-temperature flue gas that in incinerator, produces cool off, the equipment of heat recovery.
Usually, in the color painted steel strip production line, via being mixed with environmentally harmful inflammable substance in the gas that the spraying coating process process produces in the spraying curing room, therefore before atmosphere, need to carry out harmless processing row, after normally pernicious gas being drawn, add a certain proportion of coal gas, enter in the incinerator after the mixing and burn, the high-temperature flue gas (about 800 ℃) that produces enters the high-temperature heat-exchanging tube side and carries out heat recovery, successively through the high-temperature region heat exchanger, the low-temperature space heat exchanger, carry out thermal energy exchange with fresh air from air blast, fresh air passes through between the heat exchange tube of low-temperature space heat exchanger successively and between the heat exchange tube of high-temperature region heat exchanger, the fresh air temperature is heated to about 650 ℃ step by step to meet the curing demand of spraying coating process.
The high temperature fresh air enters spray booth and is used for spraying steel plate technology, enters in the incinerator behind the pernicious gas adding coal gas of generation again and burns, and moves in circles.
The major function of this equipment is: the environmentally harmful high temperature combustible waste gases (for example containing materials such as benzene, phenol) that utilizes spray booth to produce, mixed gas enters in the incinerator and burns, to eliminate environmentally harmful material, meet environmental emission standard, thus the environment-friendly function of the project of realization; The high-temperature flue gas that produces is used for heating the fresh air that enters in the spraying curing room, satisfying the spraying coating process requirement, thus the power saving function of the project of realization.
One, industry high-temperature heat-exchanging manufacturing technology commonly used is at present:
1. the two ends of high-temperature region heat exchanger, low-temperature space heat exchanger are respectively equipped with tube sheet, are connected with heat exchanger tube between the tube sheet, and the opening of corresponding heat exchanger tube is provided with perforate on the tube sheet.
2. fresh air flows between Tube Sheet of Heat Exchanger, guarantees that by four tube bundle support plates fresh air flows, and carries out exchange heat on perpendicular to the direction of tube bank;
3. an expansion joint is set, to absorb the thermal expansion that heat exchanger Yin Gaowen causes in the high-temperature flue gas exit;
4. establish fixing point at high-temperature flue gas outlet bearing place, make entire equipment at high temperature to the importer to expansion;
5. a corrugated-type expansion joint is set, to absorb the thermal expansion that heat exchanger Yin Gaowen causes on the high-temperature flue gas inlet pipeline.
6. the end socket of a hemispherical dome shape respectively is set, to guarantee the requirement of distribution of gas at the high-temperature flue gas import and export.
Two, above-mentioned manufacturing technology has the following disadvantages:
High-temperature flue gas is from about 800 ℃ about 300 ℃ of dropping to the exit of import department, the high-temperature heat-exchanging expanded by heating, because of the thermal expansion uptake of the corrugated-type expansion joint of high-temperature heat-exchanging is not enough to offset the elongation that high-temperature heat-exchanging occurs because of thermal expansion, cause occurring tube brakes, tube sheet and the phenomenon that crack deformation, pipeline are out of shape because of thermal expansion occurs, serious developing into can't guarantee the heat exchange effect.
Since the restriction of above-mentioned factor, when high-temperature heat-exchanging commonly used at present is applied to color coating line, the less stable of continuous operation, service life is undesirable.That have even the equipment production time is not long, crackle occurs with regard to pipe drawing crack, tube sheet occurring, problems such as distortion appear in pipeline, and maintenance time is longer, influence greatly color coating line normally, stable operation.
The front portion that phenomenon that crack deformation, pipeline be out of shape because of thermal expansion mainly occurs in the high-temperature region heat exchanger appears in above-mentioned tube brakes, tube sheet, high more tube sheet of the temperature of promptly bearing and the easy more generation problem of heat exchanger tube, service life is poor more, and often need to change whole high-temperature region heat exchanger in the maintenance process, cause the maintenance difficult complexity, cost is very high.
Therefore, necessaryly provide a kind of high-temperature heat-exchanging that can overcome above-mentioned defective.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of high-temperature heat-exchanging of being convenient to keep in repair.
For addressing the above problem, the utility model adopts following technical scheme: a kind of high-temperature heat-exchanging, it comprises heat exchanger body, the front end of heat exchanger body is provided with the high-temperature flue gas import, the rear end of heat exchanger body is provided with the high-temperature flue gas outlet, described heat exchanger body comprises the high-temperature region heat exchanger that is positioned at the front portion and is positioned at the low-temperature space heat exchanger that the rear portion communicates with the high-temperature region heat exchanger, be connected with the intermediate connector of hollow between described high-temperature region heat exchanger and the low-temperature space heat exchanger, described low-temperature space heat exchanger has the shell side imported equipments and parts, described high-temperature region heat exchanger has the shell side spout member, wherein said high-temperature region heat exchanger comprises first high temperature section that is positioned at the place ahead at least and is positioned at second high temperature section that the first high temperature section rear communicates with first high temperature section, described first, the front and back end of two high temperature section and low-temperature space heat exchanger is equipped with tube sheet, described first, be connected with the intermediate connector of hollow between two high temperature section, described shell side spout member is positioned at first high temperature section.
Compared with prior art, the utility model high-temperature heat-exchanging has following beneficial effect: first and second high temperature section that links to each other before and after this high-temperature region heat exchanger comprises, only need to change first high temperature section when first short high temperature section expires service life and get final product when service life, and need not whole high-temperature region heat exchanger is all replaced, thereby be convenient to maintenance, saving cost.
[description of drawings]
Fig. 1 is the overall structure schematic side view of the specific embodiment of the utility model high-temperature heat-exchanging.
Fig. 2 is the overall structure schematic top plan view of high-temperature heat-exchanging shown in Figure 1.
Fig. 3 is the enlarged diagram of analysing and observe of circle I shown in Figure 2 place structure, and it embodies the position relation of case, casing and sealing material.
Fig. 4 is that the heat exchanger tube and the cuing open of tube sheet welding of high-temperature heat-exchanging shown in Figure 1 shown schematic diagram.
[specific embodiment]
See also Fig. 1 to shown in Figure 4, a kind of high-temperature heat-exchanging, can be used in the color painted steel strip production line high-temperature flue gas being carried out heat recovery, it comprises heat exchanger body 1 and is connected to heat exchanger body forward-and-rearward tube side imported equipments and parts 2 and tube side spout member 8.
High-temperature region heat exchanger 4 is positioned at the front portion of heat exchanger body 1, it comprises first high temperature section 41 that is positioned at the place ahead and is positioned at second high temperature section 42 that the first high temperature section rear communicates with first high temperature section, the rear portion that described low-temperature space heat exchanger 5 is positioned at heat exchanger body 1 communicates with second high temperature section 42 of high-temperature region heat exchanger 4, described first, two high temperature section 41,42 and low-temperature space heat exchanger 5 be equipped with housing, the front and back end of housing all is welded with tube sheet 12, be communicated with heat exchanger tube 13 between the tube sheet, the port of corresponding heat exchanger tube is provided with perforate and welds (joining shown in Figure 4) with the port of heat exchanger tube mutually on the tube sheet, and wherein the employed material of the heat exchanger tube of high-temperature region heat exchanger 4 is more high temperature resistant than the employed material of the heat exchanger tube of low-temperature space heat exchanger 5.Zone between the described heat exchanger tube 13 is called between pipe.Be connected with expansion joint 14 by the intermediate connector 6 of hollow respectively between described first and second high temperature section 41,42 and between second high temperature section 42 and the low-temperature space heat exchanger 5.Described intermediate connector 6 is connected with the heat exchanger tube of high-temperature region heat exchanger 4 and the heat exchanger tube of low-temperature space heat exchanger 5, but all do not communicate between the pipe of described intermediate connector 6 and high-temperature region heat exchanger 4 and low-temperature space heat exchanger 5, offer the manhole of being convenient to keep in repair 15 on the sidewall of intermediate connector 6.
The front end of heat exchanger body 1 (i.e. the front end of first high temperature section 41) has the high-temperature flue gas import, and the rear end of described heat exchanger body (being the rear end of low-temperature space heat exchanger 5) has exhanst gas outlet.The housing of first high temperature section 41 is provided with the expansion joint 16 that links to each other with its front and back end tube sheet respectively, and corresponding heat exchanger tube has the expansion tube 17 that links to each other with described front and back end tube sheet respectively.The housing of second high temperature section 42 is provided with the expansion joint that links to each other with the rear end tube sheet, and corresponding heat exchanger tube has the expansion tube that links to each other with the rear end tube sheet.Be provided with the intermediate connector 6 of hollow between first and second high temperature section, described intermediate connector front end joins by the rear end tube sheet of the expansion joint and first high temperature section 41, and the rear end links to each other with the front end tube sheet of second high temperature section 42.The housing of described first high temperature section 41 is provided with the shell side spout member 11 that communicates between the pipe of upward opening and first high temperature section, the lower housing portion of described first and second high temperature section 41,42 is provided with the shell side under casing 18 that is communicated with between first and second high temperature section pipe, and described shell side under casing also is provided with expansion joint corresponding to the position of the intermediate connector between first and second high temperature section 6.The housing top of described second high temperature section 42 is provided with the shell side top case 7 that communicates between pipe with second high temperature section.
The front end tube sheet of above-mentioned low-temperature space heat exchanger 5 is connected with the rear end of intermediate connector 6, and the front end of intermediate connector 6 links to each other with the rear end tube sheet of second high temperature section 42 by expansion joint 14 and forms path.The rear of low-temperature space heat exchanger 5 is provided with tube side spout member 8, the front end of tube side spout member 8 links to each other with the rear end tube sheet of low-temperature space heat exchanger 5, the rear end of tube side spout member 8 is provided with flue gas discharge opening, the top of described low-temperature space heat exchanger 5 is provided with the shell side imported equipments and parts 9 that communicate between upward opening and pipe low-temperature space heat exchanger 5 near tube side spout member 8 sides, the top of described low-temperature space heat exchanger 5 is provided with the shell side top case 7 that communicates between pipe with low-temperature space heat exchanger 5 near intermediate connector 6 sides, the shell side top case 7 of described low-temperature space heat exchanger 5 is connected with the shell side top case 7 of second high temperature section 42, also is provided with expansion joint on the case of described shell side top.
Also be provided with the gripper shoe 19 of the support heat exchanger tube parallel in the housing of above-mentioned first and second high temperature section, low-temperature space heat exchanger with tube sheet, described gripper shoe is provided with holds the through hole that heat exchanger tube passes and diameter is bigger than heat exchanger tube overall diameter, leaves the function that the support heat exchanger tube is played in the gap between heat exchanger tube and the through hole thereby make.The lower housing portion of described low-temperature space heat exchanger 5 also is provided with the shell side under casing 50 between the pipe that is communicated with the low-temperature space heat exchanger.The below of described gripper shoe and tube sheet is provided with the supporting mechanism 10 that supports heat exchanger body, and described supporting mechanism 10 includes several bearings, and described bearing can be arranged to roller support or hold-down support according to the demand of expansion direction.In the present embodiment, the bearing of the front end tube sheet of first high temperature section 41 below is a roller support.
Between the pipe of above-mentioned shell side imported equipments and parts 9, low-temperature space heat exchanger 5, between the pipe of shell side under casing 50, shell side top case 7, second high temperature section 42, between the pipe of shell side under casing 18, first high temperature section 41 and shell side spout member 11 be communicated with and form the shell side passages.The heat exchanger tube of the heat exchanger tube of above-mentioned first and second high temperature section, two intermediate connectors 6 and low-temperature space heat exchanger 5 is communicated with and forms the tube side passage.
Above-mentioned tube side imported equipments and parts 2 comprise casing 20 and case 30, and described casing 20 is positioned at the place ahead of heat exchanger body 1, and a side of described casing 20 has high-temperature flue gas entry, and the rear end of described casing 20 communicates with the high-temperature flue gas import of heat exchanger body 1.Be provided with the gap between described heat exchanger body 1 and the casing 20 and heat exchanger body 1 and casing 20 are freely relatively moved.The front end of described heat exchanger body 1 is extended with front apron forward, and the rear end of described casing 20 extends back and is positioned at the front apron outside and the backboard 203 parallel with front apron.Described case 30 is the shaped as frame structure, described case 30 connects by bolt and nut or modes such as hinge connection or welding are fixed on the heat exchanger body 1, described case 30 be positioned at heat exchanger body 1 the high-temperature flue gas import near, described case 30 extend forward casing 20 high-temperature flue gas outlet the outside and cover in outside the gap, described case 30 and casing 20 are not fixed together and can relatively move, thereby heat exchanger body 1 and case 30 are freely relatively moved with casing 20 together.Be provided with the space of 5mm to 100mm in this specific embodiment between case 30 and the casing 20, can certainly be outside this scope, only otherwise influence freely relatively moving and seal and getting final product of case and casing.Packing has sealing material 40 with the above-mentioned gap of shutoff in the described case 30 and between the described front and rear baffle, and sealing material described in this specific embodiment is a kind of insulation material, can certainly be heat proof material or other material.Described casing 20 includes front end-plate, biside plate, the end (top) plate, and described biside plate, base plate, top board surround the shaped as frame structure, and the side of being connected with connects circle 23 on the side plate of described shaped as frame structure.The opening that described side connects circle 23 is the high-temperature flue gas entry of casing 20.Gap between described heat exchanger body 1 and the casing 20 is meant the front end tube sheet of high-temperature region heat exchanger 4 and the left side plate of casing 20, the slit between the end (top) plate, packing has sealing material 40 in the described gap, sealing material described in this specific embodiment is a kind of insulation material, can certainly be heat proof material or other material.The inboard of described left and right sides plate, the end (top) plate is welded with inner reinforced plate 201 respectively, and the outside of described left and right sides plate, the end (top) plate is welded with outer gusset 210 respectively, and described inner reinforced plate 201 and outer gusset 210 can improve the structural strength of casing.Described side plate is provided with the manhole of being convenient to keep in repair 211.Described side connects circle 23 openend and is provided with the flange 24 that is connected with the high-temperature flue gas outlet of the incinerator (not shown) of system.The lower front of described casing 20 is equipped with the hold-down support 25 of supporting box 20, and integral body moves forward after being heated with restriction casing 20.The lower rear of casing 20 is equipped with the roller support 26 of supporting box 20, so that casing 20 can expand to heat exchanger body 1 direction when being heated.The installed inside of described casing 20 has insulation material or the heat proof material of being fixed by inner reinforced plate 201.Described casing 20, case 30 materials can be carbon steel, stainless steel, titanium material and other metal material.Described insulation material can be ceramic fibre, alumina silicate fiber felt, alumina silicate fibre brick, refractory brick, refractory concrete etc.
When high-temperature heat-exchanging is worked, high-temperature flue gas in the incinerator enters high-temperature heat-exchanging from the high-temperature flue gas entry of tube side imported equipments and parts 2, flow through successively tube side imported equipments and parts 2, tube side passage, tube side spout member 8 are discharged from the flue gas discharge opening of tube side spout member 8; Extraneous fresh air is injected by the opening of air blast through the shell side imported equipments and parts 9 of low-temperature space heat exchanger 5, and the spray booth (not shown) of discharging the system that enters from the opening of the shell side spout member 11 of first high temperature section 41 behind the shell side passage of flowing through is used for spraying and solidifies needs.Fresh air and high-temperature flue gas are respectively after low-temperature space heat exchanger 5,4 heat exchange of high-temperature region heat exchanger in said process, (in fact fresh air and high-temperature flue gas are to carry out heat exchange by the heat exchanger tube tube wall), the fresh air temperature rises to about 650 ℃, to meet the requirement of spraying coating process, high-temperature flue gas is from about 800 ℃ about 300 ℃ of dropping to the flue gas discharge opening place of high-temperature flue gas entry, to reach the purpose that reclaims heat energy.
In the process of high-temperature heat-exchanging work, heat exchanger body 1 expands after being heated with casing 20, owing to be provided with the gap between heat exchanger body 1 and the casing 20, thereby heat exchanger body 1 and casing 20 are freely relatively moved, realization is to the absorption of thermal expansion, and since high-temperature region heat exchanger 4 comprised by intermediate connector 6 link to each other with expansion joint 14 first, two high temperature section 41,42, thereby make the absorption of thermal expansion more effective, whole stressed tending to balance after high-temperature heat-exchanging is heated, the overall swell increment of high-temperature heat-exchanging is reduced greatly, thereby the improvement system causes occurring tube plate deformation because of thermal expansion, heat exchanger tube and tube sheet pull, phenomenons such as pipeline distortion make heat exchanger that the job stability and the reliability of longer-term be arranged.
What more than introduce is preferred implementation of the present utility model, and in other embodiments, above-mentioned heat exchanger body 1 also can be made up of the multistage heat exchanger, and the high-temperature region heat exchanger also can have more than two sections.Above-mentioned case 30 can be to be connected the outside of casing 20 rear ends and the outside of the high-temperature flue gas import that covers in heat exchanger body of extending back, and not affixed and can relatively move between case 30 and the heat exchanger body 1.Described case 30 can be sheathed on the gap outside between heat exchanger body 1 and the casing 20 and all not affixed with heat exchanger body and casing 20.Described case 30 can be divided into four cover plates up and down, wherein every cover plate can with heat exchanger body 1 and casing 20 both one of link to each other.Described tube side imported equipments and parts 2 can not have casing 20 and case 30 yet and directly connect circle in the front end connection side of heat exchanger body 1, and the side connects round openend and is provided with the flange that is connected with the high-temperature flue gas outlet of the incinerator (not shown) of system.
Certainly the utility model is not limited in above-mentioned several embodiment, gives unnecessary details no longer one by one herein.
Because low-temperature space heat exchanger 5 is lower than the temperature that high-temperature region heat exchanger 4 stands, so that the material of low-temperature space heat exchanger 5 can be than high-temperature region heat exchanger 4 is poor, and cost also just can reduce.Because the temperature that the front end tube sheet of the high-temperature region heat exchanger 4 in the heat exchanger body 1 and anterior heat exchanger tube stand is the highest, the influence that is subjected to thermal expansion is also big more, therefore the life-span of high-temperature region heat exchanger 4 is significantly lower than low-temperature space heat exchanger 5, the high-temperature region heat exchanger is the one-part form structure in the prior art, need change whole high-temperature region heat exchanger 4 when expire service life so, the cost costliness, maintenance difficult.The utility model is divided into several sections with high-temperature region heat exchanger 4, and the front end tube sheet and the anterior heat exchanger tube of the high-temperature region heat exchanger that damages easily are positioned at first high temperature section 41, what therefore the life-span was significantly low is first high temperature section 41, only need make one first high temperature section, first high temperature section that replacing damages as service parts when 41 life-spans of first high temperature section expire gets final product, and first high temperature section 41 does not link to each other with shell side top case 7, therefore maintain and replace is more convenient, in addition, because second high temperature section 42 is positioned at first high temperature section, 41 rears, therefore the temperature that stands does not have the height of first high temperature section 41, so what its material also can be than first high temperature section is slightly poor, thereby can reduce cost.
Claims (10)
1. high-temperature heat-exchanging, it comprises heat exchanger body, the front end of heat exchanger body is provided with the high-temperature flue gas import, the rear end of heat exchanger body is provided with the high-temperature flue gas outlet, described heat exchanger body comprises the high-temperature region heat exchanger that is positioned at the front portion and is positioned at the low-temperature space heat exchanger that the rear portion communicates with the high-temperature region heat exchanger, be connected with the intermediate connector of hollow between described high-temperature region heat exchanger and the low-temperature space heat exchanger, described low-temperature space heat exchanger has the shell side imported equipments and parts, described high-temperature region heat exchanger has the shell side spout member, it is characterized in that: described high-temperature region heat exchanger comprises first high temperature section that is positioned at the place ahead at least and is positioned at second high temperature section that the first high temperature section rear communicates with first high temperature section, described first, the front and back end of two high temperature section and low-temperature space heat exchanger is equipped with tube sheet, described first, be connected with the intermediate connector of hollow between two high temperature section, described shell side spout member is positioned at first high temperature section.
2. high-temperature heat-exchanging as claimed in claim 1 is characterized in that: also be connected with expansion joint between described first and second high temperature section.
3. high-temperature heat-exchanging as claimed in claim 1 or 2 is characterized in that: described first high temperature section is connected with expansion joint in front end tube sheet rear.
4. high-temperature heat-exchanging as claimed in claim 3 is characterized in that: the supported underneath of the front end tube sheet of described first high temperature section has roller support, and the rear of described expansion joint is provided with roller support or the hold-down support that supports first high temperature section.
5. high-temperature heat-exchanging as claimed in claim 1 or 2, it is characterized in that: first and second high temperature section of described low-temperature space heat exchanger and high-temperature region heat exchanger is equipped with housing, be provided with the heat exchanger tube that is communicated with tube sheet in the described housing, described shell side spout member is located on the housing of first high temperature section, and the opening of described shell side spout member upwards.
6. high-temperature heat-exchanging as claimed in claim 5, it is characterized in that: the top of the top of described second high temperature section and low-temperature space heat exchanger is provided with the shell side top case of the housing that is communicated with the low-temperature space heat exchanger and the housing of second high temperature section, and the below of described first and second high temperature section is provided with the shell side under casing of first and second high temperature section housing of connection.
7. high-temperature heat-exchanging as claimed in claim 5, it is characterized in that: also be provided with the gripper shoe of the support heat exchanger tube parallel with tube sheet in the housing of described first and second high temperature section, low-temperature space heat exchanger, described gripper shoe is provided with holds the through hole that heat exchanger tube passes and diameter is bigger than heat exchanger tube overall diameter.
8. high-temperature heat-exchanging as claimed in claim 7 is characterized in that: the lower housing portion of described low-temperature space heat exchanger is provided with the shell side under casing between the heat exchange tube that is communicated with the low-temperature space heat exchanger.
9. high-temperature heat-exchanging as claimed in claim 1, it is characterized in that: described high-temperature heat-exchanging also comprises and is positioned at the tube side imported equipments and parts that heat exchanger body the place ahead communicates with the high-temperature region heat exchanger, described tube side imported equipments and parts comprise casing and case, described casing has high-temperature flue gas entry, be provided with the gap between described heat exchanger body and the casing and heat exchanger body and casing are freely relatively moved, described case covers in the outside, gap, and packing has sealing material in the described case.
10. high-temperature heat-exchanging as claimed in claim 1 is characterized in that: described high-temperature heat-exchanging also comprises and is positioned at the tube side spout member that the heat exchanger body rear communicates with the low-temperature space heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620073474 CN2926970Y (en) | 2006-06-06 | 2006-06-06 | High-temperature heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620073474 CN2926970Y (en) | 2006-06-06 | 2006-06-06 | High-temperature heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926970Y true CN2926970Y (en) | 2007-07-25 |
Family
ID=38281219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620073474 Expired - Lifetime CN2926970Y (en) | 2006-06-06 | 2006-06-06 | High-temperature heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2926970Y (en) |
-
2006
- 2006-06-06 CN CN 200620073474 patent/CN2926970Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Kunshan Sanwei Heat Exchanger Co., Ltd. Assignor: Gu Ansheng Contract fulfillment period: 2007.12.1 to 2013.11.30 Contract record no.: 2008320000323 Denomination of utility model: High temperature heat exchanger and its maintenance piece Granted publication date: 20070725 License type: Exclusive license Record date: 20080924 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.1 TO 2013.11.30 Name of requester: THREE-DIMENSIONAL HEAT EXCHANGER CO., LTD., KUNSH Effective date: 20080924 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20070725 Effective date of abandoning: 20101124 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20070725 Effective date of abandoning: 20101124 |