CN106311082B - A kind of mechanical seal compensator supplementary structure on reaction kettle - Google Patents
A kind of mechanical seal compensator supplementary structure on reaction kettle Download PDFInfo
- Publication number
- CN106311082B CN106311082B CN201510368943.4A CN201510368943A CN106311082B CN 106311082 B CN106311082 B CN 106311082B CN 201510368943 A CN201510368943 A CN 201510368943A CN 106311082 B CN106311082 B CN 106311082B
- Authority
- CN
- China
- Prior art keywords
- reaction kettle
- compensator
- sealing
- autoclave body
- sealing liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to the technical field of sealing technology of reaction kettle, more particularly to a kind of mechanical seal compensator supplementary structure on reaction kettle, including reaction kettle (1) and compensator (2), compensator (2) is connected to by pressure guiding pipe (3) with the autoclave body (10) of reaction kettle (1), and pressure guiding pipe (3) is connected to the charge pipe of reaction kettle (1) simultaneously.Compensator (2) has cavity (20), cavity (20) is connected to the liquid sealing inlet (401) of sealing liquid chamber (40) by the first pipeline (51) and is connected to by the second pipeline (52) with the sealing liquid of sealing liquid chamber (40) outlet (402), and cavity (20), the first pipeline (51), sealing liquid chamber (40) and the second pipeline (51) constitute sealing liquid circuit.Using by the way of the gas phase in the charge pipe of reaction kettle (1) and autoclave body (10) simultaneously impulse, keep the pressure in pressure guiding pipe (3) micro- greater than the pressure in autoclave body (10), to prevent steam in autoclave body (10) and reagent from entering in pressure guiding pipe (3).
Description
Technical field
The present invention relates to the technical field of sealing technology of reaction kettle more particularly to a kind of mechanical seal balances on reaction kettle
Tank supplementary structure.
Background technique
The reaction kettle of high-molecular compound is used to prepare generally by autoclave body, kettle cover, collet, blender, transmission device, axle envelope
The composition such as device and support, wherein gland seal device generally uses mechanical seal.Currently, being used to prepare high-molecular compound
The mechanical seal compensator supplementary structure of reaction kettle, especially tetrafluoroethylene polymerization reaction kettle is mostly piston cylinder operator.
The patent of patent No. CN203737203U discloses a kind of mechanical seal compensator auxiliary knot on reaction kettle
Structure, including reaction kettle and the hydraulic cylinder connecting with reaction kettle, the open end of reaction kettle is equipped with sealing station, is arranged in sealing station
There is sealing liquid chamber, piston is provided in hydraulic cylinder, hydraulic cylinder is divided into upper chamber and the lower chambers of sealing by piston, and upper chamber's setting exists
Right above lower chambers, upper chamber is connected to sealing liquid chamber, is connected to inside lower chambers and reaction kettle.The structure is flat by setting oil sealing
Weighing apparatus, the pressure of reaction kettle is reasonably assigned in sealing device, the balance of pressure is obtained.But its structure is more complex, and
During reaction kettle operation charging, the pressure in reaction kettle is micro- greater than in the pressure guiding pipe being connected inside lower chambers and reaction kettle
Pressure, then the steam in reaction system and reagent etc. are easily accessible pressure guiding pipe and result in blockage, and mechanical seal is caused to damage, and influence
Mechanical seal service life is not suitable for the requirement of tetrafluoroethylene polymerization production.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is to solve steam in reaction kettle and reagent to be easily accessible mechanical seal balance
The problem of resulting in blockage in the pressure guiding pipe of tank supplementary structure.
(2) technical solution
The mechanical seal compensator auxiliary that in order to solve the above-mentioned technical problems, the present invention provides a kind of on reaction kettle
Structure, including reaction kettle and compensator, compensator are connected to by pressure guiding pipe with the autoclave body of reaction kettle, pressure guiding pipe while and reaction kettle
Charge pipe connection.
According to the present invention, pressure guiding pipe includes supervisor, the first branch pipe and the second branch pipe；One end of supervisor is connected to compensator,
And the other end is connected to simultaneously with one end of the first branch pipe and one end of the second branch pipe；The other end of first branch pipe is connected to autoclave body；
The other end of second branch pipe is connected to charge pipe.
According to the present invention, the open end of autoclave body is equipped with sealing station, and sealing station has sealing liquid chamber, and sealing liquid chamber is equipped with liquid sealing inlet
It is exported with sealing liquid；Compensator has cavity, and cavity is connected to liquid sealing inlet by the first pipeline and passes through the second pipeline and sealing liquid
Outlet, cavity, the first pipeline, sealing liquid chamber and the second pipeline constitute sealing liquid circuit.
According to the present invention, the rotary shaft of reaction kettle passes through sealing station and protrudes into the inside of autoclave body, is equipped with cooling in sealing station
Chamber, between rotary shaft and cooling chamber, sealing station is additionally provided with to be entered the water inlet of cooling chamber for coolant liquid and supplies sealing liquid chamber
The water outlet of coolant liquid discharge after exchanging heat in cooling chamber.
According to the present invention, the first pipeline is equipped with pump.
According to the present invention, it pumps as magnetic drive pump.
According to the present invention, compensator is equipped with sealing liquid and feeds mouth.
According to the present invention, compensator is equipped with liquid level display unit.
According to the present invention, the open end of autoclave body is equipped with sealing station, and sealing station has sealing liquid chamber；Compensator is hydraulic cylinder, liquid
Piston, the second chamber that hydraulic cylinder is divided into the first chamber being connected to sealing liquid chamber and be connected to autoclave body by piston are equipped in cylinder pressure.
According to the present invention, reaction kettle is tetrafluoroethylene polymerization reaction kettle.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that
(1) the mechanical seal compensator supplementary structure on reaction kettle of the invention use from the charge pipe of reaction kettle and
The mode of the intracorporal gas phase of kettle while impulse.Since pressure guiding pipe is connected to simultaneously with the autoclave body of reaction kettle and charge pipe, reaction
Kettle during the reaction, pressure in the pressure guiding pipe pressure greater than inside reaction kettle autoclave body micro- always, so that reaction kettle kettle
Intracorporal steam and various reagents will not enter in pressure guiding pipe, and then solve the intracorporal steam of reaction kettle kettle and reagent entrance
It results in blockage in pressure guiding pipe, influence the problem of mechanically-sealing apparatus service life.
(2) compensator uses cavity structure, forms sealing liquid circuit by piping connection with sealing liquid chamber, sealing liquid can be in this sealing liquid
It is circulated in circuit.During reaction kettle reaction, by the effect for the pump being arranged on pipeline, sealing liquid can be recycled constantly,
So that cooling is more uniform under the action of coolant liquid of the sealing liquid in cooling chamber, to reduce the temperature gradient of sealing liquid, avoid
Its hot-spot.In addition, the design can be according to the volume of sealing liquid in compensator in the cooling system exception of mechanically-sealing apparatus
With the specific heat situation of sealing liquid, the even running of the mechanically-sealing apparatus of long period is maintained.Compensator is set as cavity structure, structure
Simply, and equally play the role of for the pressure of reaction kettle being reasonably assigned in mechanically-sealing apparatus, and can be anti-
It answers with the equalization point of the levelling reaction kettle in time of pressure change in reaction kettle autoclave body in kettle operational process, to obtain the flat of pressure
Weighing apparatus.
Detailed description of the invention
Fig. 1 is the embodiment of the present invention one for the mechanical seal compensator supplementary structure schematic diagram on reaction kettle.
In figure: 1: reaction kettle；10: autoclave body；2: compensator；20: cavity；21: sealing liquid feeds mouth；22: liquid level display unit；3:
Pressure guiding pipe；30: supervisor；31: the first branch pipes；32: the second branch pipes；4: sealing station；40: sealing liquid chamber；401: liquid sealing inlet；402: envelope
Liquid outlet；41: cooling chamber；411: water inlet；412: water outlet；51: the first pipelines；52: the second pipelines；6: rotary shaft；7: pump.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
As shown in Figure 1, a kind of mechanical seal compensator on reaction kettle that the embodiment of the present invention one provides assists knot
Structure.The mechanical seal compensator supplementary structure being used on reaction kettle includes reaction kettle 1 and compensator 2, and compensator 2 passes through impulse
Pipe 3 is connected to the autoclave body 10 of reaction kettle 1, and pressure guiding pipe 3 is connected to the charge pipe (not shown) of reaction kettle 1 simultaneously.Art technology
Well known to personnel, pressure guiding pipe 3 is connected to autoclave body 10 refers to that pressure guiding pipe 3 and the top of autoclave body 10 are connected to, by gas phase in autoclave body 10
Pressure be introduced into compensator 2.In other words, the setting of pressure guiding pipe 3 is connected to autoclave body 10 position is can be by gas in autoclave body 10
The pressure of phase is introduced into the position in compensator 2.
The above-mentioned mechanical seal compensator supplementary structure on reaction kettle of the present embodiment one, using from reaction kettle 1
The mode of gas phase while impulse in charge pipe and autoclave body 10.Due to pressure guiding pipe 3 and reaction kettle 1 autoclave body 10 and charge pipe simultaneously
Connection, and reaction kettle 1 is during the reaction, the pressure in charge pipe is greater than the pressure in autoclave body 10, therefore pressure guiding pipe 3 always
The interior pressure pressure greater than inside autoclave body 10 micro- always, so that the steam and various reagents in autoclave body 10 will not enter
In pressure guiding pipe 3, so solve steam and reagent in the autoclave body 10 of reaction kettle 1 enter in pressure guiding pipe 3 result in blockage, influence machine
The problem of tool seal life.
Further, in the present embodiment one, pressure guiding pipe 3 includes the 30, first branch pipe 31 of supervisor and the second branch pipe 32.Supervisor 30
One end be connected to compensator 2, be responsible for 30 other end and one end of one end of the first branch pipe 31 and the second branch pipe 32 connect simultaneously
It is logical.The other end (i.e. one end opposite with compensator 2 of the first branch pipe 31) of first branch pipe 31 is connected to, the second branch pipe with autoclave body 10
32 other end (i.e. one end opposite with compensator 2 of the second branch pipe 32) is connected to charge pipe, is achieved in compensator 2 and kettle
It is connected to while body 10 is with charge pipe, so that the pressure greater than in autoclave body 10 micro- always of the pressure in supervisor 30, thus prevents
Steam and reagent in autoclave body 10 enter in supervisor 30.It should be noted that pressure guiding pipe 3 of the invention is by compensator 2 and autoclave body
10 modes being connected to simultaneously with charge pipe are not limited to aforesaid way, or other way.
Further, in the present embodiment one, the open end of autoclave body 1 is equipped with sealing station 4, and sealing station 4 has sealing liquid chamber 40, envelope
Sap cavity 40 is equipped with liquid sealing inlet 401 and sealing liquid outlet 402；Compensator 2 has cavity 20, and cavity 20 passes through the first pipeline 51 and envelope
Liquid import 401 is connected to, and cavity 20 is connected to by the second pipeline 52 with sealing liquid outlet 402, thus cavity 20, the first pipeline 51, envelope
Sap cavity 40 and the second pipeline 52 constitute sealing liquid circuit, and the position on the sealing liquid liquid level of the supervisor 30 of pressure guiding pipe 3 and cavity 20
Connection, so that sealing liquid can flow in above-mentioned sealing liquid circuit under the action of the pressure that pressure guiding pipe 3 is introduced into, so that pressure be distributed
Into sealing station 4.
In the present embodiment one, the rotary shaft 6 of reaction kettle 1 passes through sealing station 4 and protrudes into the inside of autoclave body 10, sealing station 4
In be equipped with cooling chamber 41, sealing liquid chamber 40 is between rotary shaft 6 and cooling chamber 41, and in other words, sealing liquid chamber 40 revolves around it axis 6 and sets
It sets, cooling chamber 41 is arranged around sealing liquid chamber 40.Sealing station 4 is additionally provided with water inlet 411 and water outlet 412, wherein water inlet 411
Enter cooling chamber 41 for coolant liquid, water outlet 412 is discharged for the coolant liquid after exchanging heat in cooling chamber 41 from cooling chamber 41.Specifically
Into the present embodiment one, water inlet 411 and 412 relative rotation axi 6 of water outlet are symmetrical arranged.As a result, by injecting coolant liquid
With discharge cooling chamber 41, cooling effect can be played, to the sealing liquid in sealing liquid chamber 40 to prevent sealing liquid from introducing in pressure guiding pipe 3
It is heating up under pressure effect, guarantee safety and stabilization that sealing station 3 works.Certainly, water inlet 411 and water outlet of the present invention
412 set-up mode is not limited to be symmetrical arranged, and other way setting can also be used.
Further, in the present embodiment one, the first pipeline 51 is equipped with pump 7, and sealing liquid can be achieved flat by the effect of pump 7
It is constantly recycled in the sealing liquid circuit that weighing apparatus tank 2, the first pipeline 51, sealing liquid chamber 40 and the connection of the second pipeline 52 are formed.The present embodiment one
Pump 7 use magnetic drive pump, conveying and pressurization suitable for liquid.
To sum up, in the present embodiment one, during reaction kettle 1 reacts, by the work for the pump 7 being arranged on the first pipeline 51
With sealing liquid constantly recycles in the sealing liquid circuit that the connection of compensator 2, the first pipeline 51, sealing liquid chamber 40 and the second pipeline 52 is formed
Flowing, so that cooling is more uniform under the action of coolant liquid of the sealing liquid in cooling chamber 41, to reduce the temperature ladder of sealing liquid
Degree, avoids its hot-spot.In addition, the design can be according to sealing liquid in compensator 2 when cooling system exception in cooling chamber 41
Volume and sealing liquid specific heat situation, maintain the even running of the mechanically-sealing apparatus (i.e. sealing station 4) of long period.In addition,
The compensator 2 of the present embodiment one is set as cavity structure, and structure is simple, and equally plays the pressure in the autoclave body 10 by reaction kettle 1
Power is reasonably assigned to the effect in sealing station 4, and can be in 1 reaction process of reaction kettle with the variation of pressure in autoclave body 10
The equalization point of timely levelling reaction kettle 1, to obtain the balance of pressure.
Further, in the present embodiment one, compensator 2 is equipped with sealing liquid and feeds mouth 21, for the cavity 20 to compensator 2
Interior sealing liquid is supplemented, to guarantee when reaction kettle 1 reacts, 20 in cavity in sealing liquid it is sufficient.To guarantee the close of sealing station 3
Envelope property is reliable and runs smoothly, and the sealing liquid in cavity 20 answers 80% or more of 20 volume of duty chamber.
Further, in the present embodiment one, compensator 2 is equipped with liquid level display unit 22, for monitoring sealing liquid in cavity 20
Liquid level.During reaction kettle 2 reacts, circulating for sealing liquid can generate certain consumption, when sealing liquid in cavity 20
When liquid level is lower than predetermined value, then it is supplemented in time after reaction time.
The aforesaid reaction vessel of the present embodiment one is tetrafluoroethylene polymerization reaction kettle.
Embodiment two
Embodiment two is basically the same as the first embodiment, and something in common repeats no more, the difference is that, the present embodiment two
Compensator is hydraulic cylinder, is equipped with piston in hydraulic cylinder, hydraulic cylinder is divided into the first chamber being connected to sealing liquid chamber and and kettle by piston
The second chamber of body connection, wherein second chamber is connected to by pressure guiding pipe with autoclave body and feed pipe simultaneously.That is, by it is of the invention from
The mode of the intracorporal gas phase of charge pipe and kettle of reaction kettle impulse simultaneously is used for existing plunger-type balance tank, can also equally reach
To the purpose for preventing the intracorporal steam of kettle and reagent from entering pressure guiding pipe.
The aforesaid reaction vessel of the present embodiment two is tetrafluoroethylene polymerization reaction kettle.
In conclusion compensator of the invention is connected to by pressure guiding pipe with the autoclave body of reaction kettle and charge pipe simultaneously, so that
In reaction kettle reaction process, pressure in the pressure guiding pipe pressure greater than inside autoclave body micro- always, to prevent the intracorporal water of kettle
Vapour and various reagents enter in pressure guiding pipe, and then the intracorporal steam of the kettle for solving reaction kettle and reagent enter in pressure guiding pipe and make
At blocking, influence the problem of mechanically-sealing apparatus service life.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of mechanical seal compensator supplementary structure on reaction kettle, it is characterised in that: including reaction kettle (1) and balance
Tank (2), the compensator (2) are connected to by pressure guiding pipe (3) with the autoclave body (10) of the reaction kettle (1), and the pressure guiding pipe (3) is same
When be connected to the charge pipe of the reaction kettle (1)；
The open end of the autoclave body (10) is equipped with sealing station (4), and the sealing station (4) has sealing liquid chamber (40), the sealing liquid chamber
(40) liquid sealing inlet (401) and sealing liquid outlet (402) are equipped with；The compensator (2) has cavity (20), and the cavity (20) is logical
The first pipeline (51) is crossed to be connected to the liquid sealing inlet (401) and connect by the second pipeline (52) and sealing liquid outlet (402)
Logical, the cavity (20), first pipeline (51), the sealing liquid chamber (40) and second pipeline (52) constitute sealing liquid and return
Road；
The pressure guiding pipe (3) includes supervisor (30), the first branch pipe (31) and the second branch pipe (32)；
One end of the supervisor (30) be connected to the compensator (2) and one end of the other end and first branch pipe (31) and
One end of second branch pipe (32) is connected to simultaneously；
The other end of first branch pipe (31) is connected to the autoclave body (10)；
The other end of second branch pipe (32) is connected to the charge pipe.
2. the mechanical seal compensator supplementary structure according to claim 1 on reaction kettle, it is characterised in that:
The rotary shaft (6) of the reaction kettle (1) passes through the sealing station (4) and protrudes into the inside of the autoclave body (10), described close
Seal platform (4) in be equipped with cooling chamber (41), the sealing liquid chamber (40) between the rotary shaft (6) and the cooling chamber (41),
The sealing station (4), which is additionally provided with, enters the water inlet (411) of the cooling chamber (41) for coolant liquid and in the cooling chamber
(41) water outlet (412) of the coolant liquid discharge in after heat exchange.
3. the mechanical seal compensator supplementary structure according to claim 1 on reaction kettle, it is characterised in that:
First pipeline (51) is equipped with pump (7).
4. the mechanical seal compensator supplementary structure according to claim 3 on reaction kettle, it is characterised in that:
The pump (7) is magnetic drive pump.
5. the mechanical seal compensator supplementary structure according to claim 1 on reaction kettle, it is characterised in that:
The compensator (2) is equipped with sealing liquid supply mouth (21).
6. the mechanical seal compensator supplementary structure according to claim 1 on reaction kettle, it is characterised in that:
The compensator (2) is equipped with liquid level display unit (22).
7. the mechanical seal compensator supplementary structure according to claim 1 on reaction kettle, it is characterised in that:
The open end of the autoclave body is equipped with sealing station, and the sealing station has sealing liquid chamber；The compensator is hydraulic cylinder, the liquid
Be equipped with piston in cylinder pressure, the piston by the hydraulic cylinder be divided into the first chamber being connected to the sealing liquid chamber and with the autoclave body
The second chamber of connection.
8. special according to claim 1 for the mechanical seal compensator supplementary structure on reaction kettle described in any one of -7
Sign is:
The reaction kettle is tetrafluoroethylene polymerization reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368943.4A CN106311082B (en) | 2015-06-29 | 2015-06-29 | A kind of mechanical seal compensator supplementary structure on reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368943.4A CN106311082B (en) | 2015-06-29 | 2015-06-29 | A kind of mechanical seal compensator supplementary structure on reaction kettle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106311082A CN106311082A (en) | 2017-01-11 |
| CN106311082B true CN106311082B (en) | 2019-02-19 |
Family
ID=57722229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510368943.4A Active CN106311082B (en) | 2015-06-29 | 2015-06-29 | A kind of mechanical seal compensator supplementary structure on reaction kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106311082B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111249995A (en) * | 2018-11-30 | 2020-06-09 | 中昊晨光化工研究院有限公司 | Reaction kettle mechanical seal pressurization protection device and protection method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201746319U (en) * | 2010-07-15 | 2011-02-16 | 山东国邦药业股份有限公司 | Hydrogenation reaction kettle for producing sodium hydride |
| CN102351974B (en) * | 2011-07-18 | 2014-07-09 | 山东新宇高科技材料有限公司 | Fluorocarbon resin and its preparation method |
| CN203948275U (en) * | 2013-12-06 | 2014-11-19 | 中国石油天然气股份有限公司 | Medicine adding device |
| CN103801225A (en) * | 2014-02-28 | 2014-05-21 | 成都大漠石油机械有限公司 | Auxiliary structure of mechanical sealing balance tank |
| CN203737203U (en) * | 2014-02-28 | 2014-07-30 | 成都大漠石油机械有限公司 | Mechanical sealing balance tank auxiliary structure for reaction kettle |
| CN104549048A (en) * | 2014-11-21 | 2015-04-29 | 常州市锐金轮机械配件有限公司 | Self-pressure boosting system for double-end mechanical seal |
-
2015
- 2015-06-29 CN CN201510368943.4A patent/CN106311082B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106311082A (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207951385U (en) | A kind of reaction kettle compensator | |
| CN102939475B (en) | Hydrodynamic coupling | |
| CN203075937U (en) | Cooling water circulating device of reaction kettle | |
| CN204200659U (en) | A kind of mechanical seal liquid feed means | |
| CN106311082B (en) | A kind of mechanical seal compensator supplementary structure on reaction kettle | |
| CN208669570U (en) | A kind of more pump machine envelope cooling recirculation systems | |
| CN208365885U (en) | The bottler placer of refrigerant | |
| CN204921968U (en) | Full automatically regulated - circulation system's mechanical seal system | |
| CN105765280B (en) | For adjusting the system of liquid in loop | |
| CN207805518U (en) | The plunger sealing and cooling device and high pressure homogenizer of high pressure homogenizer | |
| CN204789279U (en) | Portable corrosion test platform | |
| CN202024472U (en) | Hot water supply device of intelligent split type heat pump | |
| CN105179301B (en) | Core main pump is with passive urgent injection water supply system | |
| CN204710121U (en) | A kind of lab membrane distillation integral type feed liquid thermostatic equipment | |
| CN204533768U (en) | A kind of valve by fluid temperature (F.T.) regulation and control fluid trend | |
| CN210186894U (en) | Additive preparation system | |
| CN207694788U (en) | A kind of isothermal reaction kettle | |
| CN112175116A (en) | Temperature-raising treatment method and device for preparing dispersing agent for suspension polymerization of polyvinyl chloride | |
| CN219433595U (en) | Multi-medium cooling device of final polymerization reaction kettle | |
| CN212621373U (en) | High-temperature high-pressure gas-containing turbine experimental device | |
| CN104913199B (en) | A kind of pump installation conveyed for oil product | |
| CN219372963U (en) | Liquid cooling cabinet, liquid cooling equipment and liquid cooling system | |
| CN219946866U (en) | Heating device used in polyethylene recycling processing | |
| CN209430847U (en) | A kind of Novel sewage flow control valve | |
| CN109630373A (en) | Vertical alkali metering pump under a kind of high-temperature liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |