CN108889458B - Explosion-proof centrifuge system - Google Patents
Explosion-proof centrifuge system Download PDFInfo
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- CN108889458B CN108889458B CN201810897878.8A CN201810897878A CN108889458B CN 108889458 B CN108889458 B CN 108889458B CN 201810897878 A CN201810897878 A CN 201810897878A CN 108889458 B CN108889458 B CN 108889458B
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- nitrogen
- gas
- centrifugal machine
- centrifuge
- pipe
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 178
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 78
- 238000007789 sealing Methods 0.000 claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 69
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000001301 oxygen Substances 0.000 claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000001502 supplementing effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 61
- 230000007246 mechanism Effects 0.000 claims description 39
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 description 3
- 238000004200 deflagration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
Landscapes
- Centrifugal Separators (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses an explosion-proof centrifugal machine system, which comprises a centrifugal machine, a nitrogen supply device and an oxygen content detection device, wherein the centrifugal machine, the nitrogen supply device and the oxygen content detection device are electrically connected with a control device, a sealing valve is arranged at a discharge hole of the centrifugal machine, and a nitrogen inlet is arranged at the lower part of the centrifugal machine; the nitrogen supply device is connected with a nitrogen inlet through a main gas supply pipe for filling a large amount of nitrogen into the centrifuge and an auxiliary gas supply pipe for supplementing nitrogen into the inner cavity of the centrifuge after nitrogen filling, an electromagnetic valve is arranged on the main gas supply pipe, a gas outlet for exhausting is arranged on the top cover of the centrifuge, and the gas outlet is connected with the oxygen content detection device through a sampling detection pipeline; the oxygen content detection device comprises a diaphragm electromagnetic valve for sampling, a vortex condenser, an activated carbon filter, an oxygen content detector and a jet pump which are sequentially connected with a sampling detection pipeline, wherein the vortex condenser and the jet pump are communicated with a compressed air source through the pipeline.
Description
Technical Field
The invention relates to an explosion-proof centrifugal machine system.
Background
When flammable and explosive materials are separated, a nitrogen-filled centrifuge is required to be adopted, whether the oxygen content in gas in the centrifuge is lower than a set standard or not is detected by an oxygen content detection device, the reliability of sampling by the oxygen content detection device determines whether the nitrogen filled in the centrifuge is enough or not, and the use safety of the centrifuge is determined; and the nitrogen gas is introduced into the existing nitrogen-filled centrifuge and the internal sampling is performed through the top cover of the centrifuge, and the gas replacement in the centrifuge can be completed after the nitrogen gas is introduced for a long time.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the explosion-proof centrifugal machine system is safer and more reliable to use and efficient.
In order to solve the technical problems, the invention adopts the following technical scheme: an explosion-proof centrifuge system comprises a centrifuge, a nitrogen supply device for filling nitrogen into the centrifuge so that the nitrogen pressure in the centrifuge is higher than the external atmospheric pressure, and an oxygen content detection device for detecting the oxygen content in the gas in the inner cavity of the centrifuge so as to control the nitrogen supply device, wherein the centrifuge, the nitrogen supply device and the oxygen content detection device are electrically connected with a control device, a sealing valve is arranged at a discharge hole of the centrifuge, and a nitrogen inlet is arranged at the lower part of the centrifuge; the nitrogen supply device is connected with a nitrogen inlet through a main gas supply pipe for filling a large amount of nitrogen into the centrifuge and an auxiliary gas supply pipe for supplementing nitrogen into the inner cavity of the centrifuge after nitrogen filling, an electromagnetic valve is arranged on the main gas supply pipe, an adjusting valve is arranged on the auxiliary gas supply pipe, a gas outlet for exhausting is arranged on a top cover of the centrifuge, and the gas outlet is connected with the oxygen content detection device through a sampling detection pipeline; the oxygen content detection device comprises a diaphragm electromagnetic valve for sampling, a vortex condenser, an activated carbon filter, an oxygen content detector and a jet pump which are sequentially connected with a sampling detection pipeline, wherein the vortex condenser and the jet pump are communicated with a compressed air source through the pipeline.
As a preferable scheme, the nitrogen supply device comprises a flowmeter, a pressure reducing valve and a nitrogen source which are sequentially connected.
As a preferred scheme, the main shaft of the centrifugal machine, the cloth shaft and the bearing positions in the centrifugal machine on the scraper shaft are provided with nitrogen shaft sealing mechanisms, each nitrogen shaft sealing mechanism comprises an annular sealing groove which is arranged in a bearing cover and is close to a positioning ring in the bearing, an annular upper sealing ring, a sealing ring and an annular lower sealing ring are arranged in each sealing groove, the upper sealing ring and the lower sealing ring are in sealing connection with the positioning rings in the bearing, a nitrogen shaft sealing cavity is formed by the sealing rings and the positioning rings in the bearing and between the upper sealing ring and the lower sealing ring, an air guide groove is formed in the periphery of the sealing ring, a plurality of through holes which are axially arranged and are communicated with the inner cavity of the sealing groove are formed in the sealing ring, an air inlet hole and an air outlet hole which are communicated with the air guide groove are formed in the bearing cover, the air inlet hole is connected with a nitrogen source through an air pipe with a control valve, the air outlet hole is connected with an exhaust collecting pipe through an air outlet pipe, and two separation blocks which are prevented from being directly communicated with the air outlet hole through the air guide groove are arranged in the air guide groove.
As an optimal scheme, a liquid outlet pipe of the centrifugal machine is connected with a main liquid sealing mechanism which prevents gas in the centrifugal machine from overflowing and enables the pressure of nitrogen in the centrifugal machine to be higher than the atmospheric pressure.
As a preferred scheme, the main liquid seal mechanism comprises a closed liquid containing barrel, a liquid inlet pipe connected with the liquid outlet pipe of the centrifugal machine is arranged on the upper portion of the barrel wall of the liquid containing barrel in a penetrating mode, the lower end of the liquid inlet pipe is located at the position, close to the barrel bottom, of the barrel, a liquid outlet is formed in the upper portion of the barrel wall of the liquid containing barrel, and the pressure of feed liquid from the lower end of the liquid inlet pipe to the liquid outlet is set to be nitrogen pressure in the centrifugal machine.
As a preferable scheme, gas discharge pipes of the nitrogen shaft seal mechanisms on the main shaft, the material distribution shaft and the scraper shaft of the centrifugal machine are connected with an exhaust main pipe, the exhaust main pipe is connected with an auxiliary liquid seal mechanism which enables the pressure in the nitrogen shaft seal cavity to be higher than the pressure in the inner cavity of the centrifugal machine, and an air outlet pipe of the auxiliary liquid seal mechanism is connected with the exhaust gas collecting pipe.
As a preferred scheme, the auxiliary liquid seal mechanism comprises a closed barrel body, a shaft seal gas inlet pipe is arranged on the side wall of the closed barrel body in a penetrating manner, the lower end of the shaft seal gas inlet pipe is close to the bottom wall of the closed barrel body, an air outlet pipe is also arranged on the side wall of the closed barrel body in a penetrating manner, and the pressure of feed liquid between the lower end of the air outlet pipe and the lower end of the shaft seal gas inlet pipe is shaft seal set pressure.
As a preferred scheme, the device also comprises an alarm which is electrically connected with the control device and used for alarming when the oxygen content in the inner cavity of the centrifugal machine exceeds the standard.
The beneficial effects of the invention are as follows: in the system, the nitrogen replaced by the centrifugal machine enters from the lower part of the centrifugal machine, is discharged from the top cover of the centrifugal machine, and the replaced gas is discharged to the upper part, so that the replacement is carried out in a convection mode, and the gas replacement efficiency is greatly improved; measuring the oxygen content concentration of the inner cavity in real time through an oxygen content detector, and supplementing correspondingly when the oxygen content is higher than a set value; and the liquid is removed by condensing the sampling gas to be detected through the vortex condenser, and then the sampling gas enters an active carbon filter for filtering, so that the liquid phase and the solid phase in the gas phase are removed, and the accuracy and the reliability of oxygen content detection are facilitated.
Because nitrogen gas feeding device is through being used for filling the main air supply pipe of nitrogen gas in a large number into the centrifuge and being used for filling the auxiliary air supply pipe of nitrogen gas to the centrifuge inner chamber after the nitrogen gas, simultaneously with nitrogen gas inlet connection, both can satisfy the quick replacement centrifuge in just beginning gaseous, can effectively control the supplementary volume of nitrogen gas when centrifuge normal operating again, and avoid the solenoid valve frequent switch on the main air supply pipe, prolonged the life of solenoid valve.
The nitrogen supply device comprises a flowmeter, a pressure reducing valve and a nitrogen source which are sequentially connected, and whether the set requirement is met or not can be determined by measuring the volume of the entering nitrogen.
The nitrogen shaft sealing mechanisms are arranged on the main shaft of the centrifugal machine, the material distributing shaft and the bearing positions of the scraper shaft, which are positioned in the centrifugal machine, so that the gas with lubricating oil particles at the bearing positions can be prevented from entering the centrifugal machine to pollute products, and meanwhile, the inflammable and explosive gas in the centrifugal machine can be prevented from entering the bearing positions, and the deflagration caused by the high-speed transportation and the hot bearing is avoided.
The liquid outlet pipe of the centrifugal machine is connected with a main liquid sealing mechanism which prevents gas in the centrifugal machine from overflowing and enables the pressure of nitrogen in the centrifugal machine to be greater than the atmospheric pressure, so that the pressure of the nitrogen in the centrifugal machine is higher than the external atmospheric pressure, and the external gas is prevented from penetrating into the centrifugal machine.
The gas discharge pipes of the nitrogen shaft seal mechanism on the main shaft, the material distribution shaft and the scraper shaft of the centrifugal machine are connected with the gas discharge main pipe, so that the gas can be intensively treated, and the carried-out waste gas containing lubricating oil is prevented from directly discharging polluted air.
Because the exhaust manifold is connected with the auxiliary liquid seal mechanism which enables the pressure in the nitrogen shaft seal cavity to be higher than the pressure in the inner cavity of the centrifugal machine, inflammable and explosive entering the bearing in the centrifugal machine is better avoided, and deflagration caused by the bearing which is transferred and scalded by high-speed transportation is avoided.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of the structure of the nitrogen gas supply apparatus in the present invention.
FIG. 3 is a schematic view of the structure of the oxygen content detecting apparatus of the present invention.
FIG. 4 is a schematic view of the nitrogen shaft seal mechanism in the present invention.
FIG. 5 is a schematic cross-sectional view of a nitrogen shaft seal mechanism in accordance with the present invention.
FIG. 6 is a schematic diagram of the structure of the main liquid seal mechanism in the present invention.
Fig. 7 is a schematic structural diagram of an auxiliary liquid seal mechanism in the invention.
In fig. 1 to 7: 1. the centrifugal machine comprises a centrifugal machine body, wherein the centrifugal machine body comprises a sealing valve, a nitrogen inlet, a gas outlet, a nitrogen shaft seal mechanism, an upper sealing ring, a sealing ring and a lower sealing ring, the centrifugal machine body comprises a sealing valve, a nitrogen inlet, a nitrogen shaft seal mechanism, a gas outlet, a nitrogen shaft seal mechanism, a sealing ring and a sealing ring, the sealing ring is arranged at the bottom of the centrifugal machine body, the sealing valve is arranged at the bottom of the centrifugal machine body, the sealing ring is arranged at the top of the centrifugal machine body, the sealing valve is arranged at the bottom of the centrifugal machine body, the sealing valve is arranged at the sealing valve, the sealing valve is arranged at;
2. the nitrogen supply device comprises a flow meter 21, a pressure reducing valve 22, a nitrogen source 23, a main gas supply pipe 24, an auxiliary gas supply pipe 25, an electromagnetic valve 26 and a regulating valve 27;
3. the device comprises an oxygen content detection device, a diaphragm electromagnetic valve for sampling, a vortex condenser, an active carbon filter, an oxygen content detector, a jet pump, a compressed air source and a jet pump, wherein the diaphragm electromagnetic valve for sampling is arranged in the device 31;
4. the main liquid seal mechanism comprises a liquid containing barrel 41, a liquid inlet pipe 42 and a liquid outlet 43; 5. an auxiliary liquid seal mechanism, 51, a closed barrel, 52, a shaft seal gas inlet pipe, 53 and an air outlet pipe; 6. and 7, a gas discharge pipe and a gas discharge main pipe.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in FIG. 1, the explosion-proof centrifuge 1 system comprises a centrifuge 1, a nitrogen supply device 2 for filling nitrogen into the centrifuge 1 to make the nitrogen pressure in the centrifuge 1 be higher than the external atmospheric pressure, and an oxygen content detection device 3 for detecting the oxygen content in the gas in the inner cavity of the centrifuge 1 to control the nitrogen supply device 2, wherein the centrifuge 1, the nitrogen supply device 2 and the oxygen content detection device 3 are electrically connected with a control device. A sealing valve 11 is arranged at the discharge port of the centrifugal machine 1, and a nitrogen inlet 12 is arranged at the lower part of the centrifugal machine 1;
as shown in fig. 2, the nitrogen gas supply apparatus 2 includes a flow meter 21, a pressure reducing valve 22, and a nitrogen gas source 23, which are connected in this order. The nitrogen gas feeding device 2 is simultaneously connected with the nitrogen gas inlet 12 through a main gas feeding pipe 24 for filling a large amount of nitrogen gas into the centrifuge 1 and an auxiliary gas feeding pipe 25 for supplementing nitrogen gas into the inner cavity of the centrifuge 1 after nitrogen charging, an electromagnetic valve 26 is arranged on the main gas feeding pipe 24, a regulating valve 27 is arranged on the auxiliary gas feeding pipe 25, a gas outlet 13 is arranged on the top cover of the centrifuge 1, and the gas outlet 13 is connected with the oxygen content detection device 3 through a sampling detection pipeline. The device also comprises an alarm which is electrically connected with the control device and used for alarming when the oxygen content in the inner cavity of the centrifugal machine 1 exceeds the standard.
As shown in fig. 3, the oxygen content detecting device 3 includes a diaphragm electromagnetic valve 31 for sampling, a vortex condenser 32, an activated carbon filter 33, an oxygen content detector 34, and a jet pump 35, which are sequentially connected to a sampling detection pipe, and the vortex condenser 32 and the jet pump 35 are connected to a compressed air source 36 through pipes.
As shown in fig. 1, 4 and 5, the nitrogen shaft sealing mechanism 14 is arranged on the main shaft of the centrifugal machine 1, on the material distributing shaft and on the scraper shaft at the bearing position in the centrifugal machine 1, the nitrogen shaft sealing mechanism 14 comprises an annular sealing groove which is arranged in a bearing cover 148 and is close to a positioning ring 144 in the bearing, an annular upper sealing ring 141, a sealing ring 142 and an annular lower sealing ring 143 are arranged in the sealing groove, the upper sealing ring 141 and the lower sealing ring 143 are in sealing connection with the inner positioning ring 144 of the bearing, a nitrogen shaft sealing cavity is formed by the sealing ring 142 and the positioning ring 144 in the bearing and between the upper sealing ring 141 and the lower sealing ring 143, an air guide groove is arranged at the periphery of the sealing ring 142, a plurality of through holes which are axially arranged and are communicated with the air guide groove are formed in the sealing ring 142, the bearing cover 148 is provided with an air inlet hole 145 and an air outlet hole 146 which are communicated with the air guide groove, the air inlet hole 145 is connected with the nitrogen source 23 through an air pipe with a control valve, and the air outlet hole 146 discharges waste gas through the air discharge pipe 6, and two partition blocks 147 which prevent the air inlet hole 145 from being directly communicated with the air outlet hole 146 through the air guide groove are arranged in the air guide groove.
The liquid outlet pipe of the centrifugal machine 1 is connected with a main liquid sealing mechanism 4 which prevents the gas in the centrifugal machine 1 from overflowing and enables the nitrogen pressure in the centrifugal machine 1 to be greater than the atmospheric pressure. As shown in fig. 6, the main liquid seal mechanism 4 includes a sealed liquid containing barrel 41, a liquid inlet pipe 42 connected with a liquid outlet pipe of the centrifuge 1 is arranged on the upper part of the barrel wall of the liquid containing barrel 41 in a penetrating manner, the lower end of the liquid inlet pipe 42 is positioned at the position in the barrel, which is close to the barrel bottom, a liquid outlet 43 is arranged on the upper part of the barrel wall of the liquid containing barrel 41, and the pressure of the liquid material from the lower end of the liquid inlet pipe 42 to the liquid outlet 43 is the pressure of nitrogen set in the centrifuge 1.
The gas discharge pipes 6 of the nitrogen shaft seal mechanisms 14 on the main shaft, the material distribution shaft and the scraper shaft of the centrifugal machine 1 are connected with the gas discharge main pipe 7, the gas discharge main pipe 7 is connected with the auxiliary liquid seal mechanism 5 which enables the pressure in the nitrogen shaft seal cavity to be higher than the pressure in the inner cavity of the centrifugal machine 1, and the gas outlet pipe of the auxiliary liquid seal mechanism 5 is connected with the gas collecting pipe. As shown in fig. 7, the auxiliary liquid seal mechanism 5 comprises a closed barrel body 51, a shaft seal gas inlet pipe 52 is arranged on the side wall of the closed barrel body 51 in a penetrating manner, the lower end of the shaft seal gas inlet pipe 52 is close to the bottom wall of the closed barrel body 51, an air outlet pipe 53 is also arranged on the side wall of the closed barrel body 51 in a penetrating manner, and the pressure of feed liquid between the lower end of the air outlet pipe 53 and the lower end of the shaft seal gas inlet pipe 52 is shaft seal set pressure.
The above-described embodiments are merely illustrative of the principles and functions of the present invention, and some of the practical examples, not intended to limit the invention; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.
Claims (7)
1. The utility model provides an explosion-proof centrifuge system, includes the centrifuge, to the inside nitrogen filling of centrifuge so that the nitrogen gas pressure is greater than the nitrogen gas feeding mechanism of external atmospheric pressure in the centrifuge, and detect the oxygen content detection device of oxygen content in the centrifuge inner chamber gas in order to control nitrogen gas feeding mechanism, centrifuge, nitrogen gas feeding mechanism, oxygen content detection device all with controlling means electric connection, the discharge gate department of centrifuge is equipped with sealing valve, its characterized in that: the lower part of the centrifugal machine is provided with a nitrogen inlet; the nitrogen supply device is connected with a nitrogen inlet through a main gas supply pipe for filling a large amount of nitrogen into the centrifuge and an auxiliary gas supply pipe for supplementing nitrogen into the inner cavity of the centrifuge after nitrogen filling, an electromagnetic valve is arranged on the main gas supply pipe, an adjusting valve is arranged on the auxiliary gas supply pipe, a gas outlet for exhausting is arranged on a top cover of the centrifuge, and the gas outlet is connected with the oxygen content detection device through a sampling detection pipeline; the oxygen content detection device comprises a diaphragm electromagnetic valve for sampling, a vortex condenser, an active carbon filter, an oxygen content detector and a jet pump which are sequentially connected with a sampling detection pipeline, wherein the vortex condenser and the jet pump are communicated with a compressed air source through the pipeline; the nitrogen gas seal mechanism is arranged on the spindle of the centrifugal machine, the material distributing shaft and the bearing positions in the centrifugal machine on the scraper shaft, and comprises an annular sealing groove which is arranged in the bearing cover and is close to the positioning ring in the bearing, an annular upper sealing ring, a sealing ring and an annular lower sealing ring are arranged in the sealing groove, the upper sealing ring and the lower sealing ring are in sealing connection with the inner positioning ring of the bearing, a nitrogen gas seal cavity is formed by the sealing ring, the inner positioning ring of the bearing and the upper sealing ring and the lower sealing ring, an air guide groove is arranged on the periphery of the sealing ring, a plurality of through holes which are axially arranged and are communicated with the inner cavity of the sealing groove are formed in the sealing ring, an air inlet hole and an air outlet hole which are communicated with the air guide groove are formed in the bearing cover, the air inlet hole is connected with a nitrogen gas source through an air pipe with a control valve, the air outlet hole is connected with an exhaust gas collecting pipe through an air exhaust pipe, and two separation blocks which are used for preventing the air inlet hole from being directly communicated with the air outlet hole through the air guide groove are arranged in the air guide groove.
2. An explosion-proof centrifuge system as defined in claim 1, wherein: the nitrogen supply device comprises a flowmeter, a pressure reducing valve and a nitrogen source which are sequentially connected.
3. An explosion-proof centrifuge system as defined in claim 1, wherein: the liquid outlet pipe of the centrifugal machine is connected with a main liquid sealing mechanism which prevents gas in the centrifugal machine from overflowing and enables the pressure of nitrogen in the centrifugal machine to be greater than the atmospheric pressure.
4. An explosion-proof centrifuge system as defined in claim 3, wherein: the main liquid seal mechanism comprises a sealed liquid containing barrel, a liquid inlet pipe connected with the liquid outlet pipe of the centrifugal machine is arranged on the upper portion of the barrel wall of the liquid containing barrel in a penetrating mode, the lower end of the liquid inlet pipe is located at the position, close to the barrel bottom, of the barrel, a liquid outlet is formed in the upper portion of the barrel wall of the liquid containing barrel, and the pressure of feed liquid between the lower end of the liquid inlet pipe and the liquid outlet is set to be nitrogen pressure in the centrifugal machine.
5. An explosion-proof centrifuge system as defined in claim 1, wherein: and gas discharge pipes of the nitrogen shaft seal mechanisms on the main shaft, the material distribution shaft and the scraper shaft of the centrifugal machine are connected with an exhaust main pipe, the exhaust main pipe is connected with an auxiliary liquid seal mechanism which enables the pressure in the nitrogen shaft seal cavity to be higher than the pressure in the inner cavity of the centrifugal machine, and an air outlet pipe of the auxiliary liquid seal mechanism is connected with the exhaust gas collecting pipe.
6. An explosion-proof centrifuge system as defined in claim 5, wherein: the auxiliary liquid sealing mechanism comprises a closed barrel body, a shaft seal gas inlet pipe is arranged on the side wall of the closed barrel body in a penetrating mode, the lower end of the shaft seal gas inlet pipe is close to the bottom wall of the closed barrel body, an air outlet pipe is further arranged on the side wall of the closed barrel body in a penetrating mode, and the pressure of feed liquid between the lower end of the air outlet pipe and the lower end of the shaft seal gas inlet pipe is shaft seal set pressure.
7. The explosion-proof centrifuge system of any one of claims 1-6, wherein: the device also comprises an alarm which is electrically connected with the control device and used for alarming when the oxygen content in the inner cavity of the centrifugal machine exceeds the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897878.8A CN108889458B (en) | 2018-08-08 | 2018-08-08 | Explosion-proof centrifuge system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897878.8A CN108889458B (en) | 2018-08-08 | 2018-08-08 | Explosion-proof centrifuge system |
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| CN108889458A CN108889458A (en) | 2018-11-27 |
| CN108889458B true CN108889458B (en) | 2024-01-02 |
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| CN109966778A (en) * | 2019-03-20 | 2019-07-05 | 合肥通用机械研究院有限公司 | A kind of explosive dicyandiamide solution nitrogen charging oxygen determination essential safe type Centrifugical extraction system |
| CN110721822A (en) * | 2019-11-18 | 2020-01-24 | 江苏同泽过滤科技有限公司 | Explosion-proof device in horizontal spiral continuous filtration centrifuge |
| CN112619302A (en) * | 2020-12-07 | 2021-04-09 | 安徽普源分离机械制造有限公司 | Filtering device for gas detection and oxygen content detection system of centrifugal machine |
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