CN221074592U - Be applied to shearing pump liquid sealing system of carbon fiber spinning stoste - Google Patents
Be applied to shearing pump liquid sealing system of carbon fiber spinning stoste Download PDFInfo
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- CN221074592U CN221074592U CN202322884582.1U CN202322884582U CN221074592U CN 221074592 U CN221074592 U CN 221074592U CN 202322884582 U CN202322884582 U CN 202322884582U CN 221074592 U CN221074592 U CN 221074592U
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- pump
- pressure
- stock solution
- sealing
- liquid
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- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000010008 shearing Methods 0.000 title claims abstract description 26
- 238000009987 spinning Methods 0.000 title claims abstract description 14
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 13
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000003860 storage Methods 0.000 claims abstract description 30
- 239000011550 stock solution Substances 0.000 claims abstract description 28
- 239000000243 solution Substances 0.000 claims abstract description 8
- 239000000498 cooling water Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 5
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a shearing pump sealing system applied to carbon fiber spinning solution, which comprises a shearing pump, wherein the shearing pump comprises a pump body and a pump head, the pump body is communicated with the pump head through a mechanical sealing cavity, a stock solution input pipeline and a stock solution output pipeline are arranged on the shearing pump, a pressure transmitter and a pressure alarm switch are arranged on the stock solution input pipeline, and the mechanical sealing cavity is communicated with a liquid storage tank; the pressure transmitter detects the pressure of the stock solution input pipeline, and when the pressure of the stock solution input pipeline exceeds a set value, the shearing pump stops working. The utility model can prevent the raw liquid from leaking to the atmosphere side and the gas from entering the pipeline, thereby avoiding accidents and protecting the environment; the working environment of the mechanical seal can be improved, and the reliability and the service life of the mechanical seal can be improved.
Description
Technical Field
The utility model relates to a mechanical sealing device, in particular to a shearing pump sealing system applied to carbon fiber spinning stock solution.
Background
The defoaming of the spinning solution is an important ring in the preparation process of the carbon fiber spinning solution, the solution is conveyed to a defoaming tower through a gear pump, and a shearing pump is arranged between the gear pump and the defoaming tower to shear and mix the solution conveyed into a tank so that the solution is mixed more uniformly and can be dissolved more fully. Because the stock solution is inflammable and explosive, poisonous and harmful, the shearing pump often adopts double-end-face mechanical seal when in operation, and the double-end-face mechanical seal comprises a medium side mechanical seal and an atmosphere side mechanical seal which are respectively used for preventing the stock solution from leaking to the atmosphere side and the gas from entering the pipeline, thereby avoiding accidents and protecting the environment.
The existing system is pressurized by means of an external pressure source, an operator manually adjusts a pneumatic adjusting valve according to the pressure value before entering a shear pump, the adjusting range is 0-0.7Mpa, and when the abnormal fluctuation of the medium side pressure exceeds the set value of the hydraulic pressure, the mechanical seal is subjected to back pressure, so that the end face is opened, and finally the mechanical seal is leaked.
Disclosure of utility model
Aiming at the defects of the existing mechanical seal liquid sealing device, the utility model provides a shearing pump liquid sealing system applied to carbon fiber spinning stock solution, which can prevent the stock solution from leaking to the atmosphere side and gas from entering a pipeline, avoid accidents and protect the environment; the working environment of the mechanical seal can be improved, and the reliability and the service life of the mechanical seal can be improved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The shearing pump sealing system comprises a shearing pump, wherein the shearing pump comprises a pump body and a pump head, the pump body is communicated with the pump head through a mechanical seal sealing cavity, a stock solution input pipeline and a stock solution output pipeline are arranged on the shearing pump, a pressure transmitter and a pressure alarm switch are arranged on the stock solution input pipeline, and the mechanical seal sealing cavity is communicated with a liquid storage tank;
The pressure transmitter detects the pressure of the stock solution input pipeline, and when the pressure of the stock solution input pipeline exceeds a set value, the shearing pump stops working.
Further, a medium sealing side interface and an atmosphere sealing side interface are arranged on the mechanical sealing cavity, and the medium sealing side interface and the atmosphere sealing side interface are respectively communicated with the liquid storage tank through a first circulating pipeline and a second circulating pipeline.
Further, a thermometer and a pressure gauge are arranged on the first circulating pipeline, the thermometer displays the temperature of the sealing liquid, and the pressure gauge displays the pressure value of the sealing liquid.
Further, a coil is arranged in the liquid storage tank, the water inlet end of the coil is connected with a cooling water inlet valve, the cooling water inlet valve is connected with external circulating water, the circulating water circulates in the coil and exchanges heat with sealing liquid outside to reduce the temperature of the sealing liquid, and the other end of the coil is provided with a cooling water outlet valve.
Further, the top of the liquid storage tank is provided with a liquid injection port for adding sealing liquid.
Further, the top end of the liquid storage tank is also provided with a vent pipe, and the vent pipe is provided with an electric regulating valve.
After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:
1. The sealing device is characterized in that a medium sealing side interface and an atmospheric sealing side interface are arranged on the sealing cavity, and are respectively communicated with the liquid storage tank through a first circulating pipeline and a second circulating pipeline.
2. The coil pipe is arranged in the liquid storage tank, cooling water is filled in the coil pipe, so that the guided sealing liquid returns to the sealing cavity after being cooled, the effect of reducing the working temperature of the shear pump is achieved, the working environment of the mechanical seal is improved, and the reliability and the service life of the mechanical seal are improved. In addition, the sealing liquid circulates in the shearing pump and the liquid storage tank to take away the friction heat of the mechanical seal and lubricate the mechanical seal.
The utility model will now be described in detail with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present utility model.
In the figure, a 1-liquid storage tank, a 101-pump body, a 102-pump head, a 103-mechanical seal sealing cavity, a 104-medium sealing side interface, a 105-atmosphere sealing side interface, a 2-raw liquid input pipeline, a 3-pressure transmitter, a 4-raw liquid output pipeline, a 5-liquid storage tank, a 6-first circulation pipeline, a 601-thermometer, a 602-pressure gauge, a 7-second circulation pipeline, an 8-cooling water inlet valve, a 9-electric regulating valve, a 10-cooling water outlet valve, an 11-liquid injection port, a 12-pressure alarm switch and a 13-coil pipe.
Detailed Description
The structure of the present utility model will be described in detail with reference to the accompanying drawings.
A shearing pump sealing liquid system applied to carbon fiber spinning solution is shown in fig. 1, and comprises a shearing pump 1, wherein the shearing pump 1 comprises a pump body 101 and a pump head 102, the pump body 101 is communicated with the pump head 102 through a mechanical sealing cavity 103, a stock solution input pipeline 2 and a stock solution output pipeline 4 are arranged on the shearing pump 1, a pressure transmitter 3 and a pressure alarm switch 12 are arranged on the stock solution input pipeline 2, and the mechanical sealing cavity 103 is communicated with a liquid storage tank 5.
The pressure transmitter 3 detects the pressure of the stock solution input pipeline 2, and when the pressure of the stock solution input pipeline 2 exceeds a set value, the shear pump 1 stops working to prevent overpressure leakage.
The mechanical seal sealing cavity 103 is provided with a medium sealing side port 104 and an atmosphere sealing side port 105, the medium sealing side port 104 and the atmosphere sealing side port 105 are respectively communicated with the liquid storage tank 5 through the first circulating pipeline 6 and the second circulating pipeline 7, the liquid storage tank 5 and the mechanical seal sealing cavity 103 form a sealing system, sealing liquid is stored in the liquid storage tank 5, and sealing liquid is provided for sealing.
A thermometer 601 and a pressure gauge 602 are provided on the first circulation pipe 6, the thermometer 601 displays the temperature of the sealing liquid, and the pressure gauge 602 displays the pressure value of the sealing liquid.
A coil pipe 13 is arranged in the liquid storage tank 5, a water inlet end of the coil pipe 13 is connected with a cooling water inlet valve 8, the cooling water inlet valve 8 is connected with external circulating water, the circulating water circulates in the coil pipe 13 and exchanges heat with sealing liquid outside to reduce the temperature of the sealing liquid, and a cooling water outlet valve 10 is arranged at the other end of the coil pipe 13. The top of the liquid storage tank 5 is provided with a liquid injection port 11, and a funnel is used for adding sealing liquid for the liquid storage tank 5.
The top of the liquid storage tank 5 is also provided with a vent pipe, the vent pipe is provided with an electric regulating valve 9, air is filled into the liquid storage tank 5 through the vent pipe, and the pressure in the liquid storage tank 5 can be regulated by regulating the opening of the electric regulating valve 9.
The pressure transmitter 3 detects the pressure in the stock solution input pipeline 2, transmits a pressure change signal to the electric regulating valve 9, automatically regulates the opening of the valve according to the pressure signal, regulates the pressure value in the tank, ensures that the mechanical seal pressure on the medium side and the mechanical seal pressure on the atmosphere side are balanced with the pressure in the stock solution input pipeline 2, can prevent the stock solution from leaking to the atmosphere side and the gas from entering the pipeline, avoids accidents and protects the environment. The pressure detected by the pressure transmitter 3 exceeds the adjustment range, the system and the site send out audible and visual alarms, the shear pump 1 is stopped, and meanwhile, the shear pump bypass valve is opened to release pressure.
In order to ensure the production process safety, a process medium DMSO (dimethyl sulfoxide) is selected as the sealing liquid, so that the pollution of a conveying medium caused by the leakage of the sealing liquid is avoided.
The working principle of the system is as follows: the sealing cavity 103 is provided with a medium sealing side port 104 and an atmosphere sealing side port 105, the medium sealing side port 104 and the atmosphere sealing side port 105 are respectively communicated with the liquid storage tank 5 through the first circulating pipeline 6 and the second circulating pipeline 7, the sealing cavity 103 is provided with pressurized sealing liquid by the liquid storage tank 5, the pressure of the sealing liquid is 0.2-0.3 MPa higher than the pressure in the raw liquid input pipeline 2, so that the raw liquid cannot leak into the atmosphere, and the atmospheric is prevented from entering the raw liquid.
The coil pipe 13 is arranged in the liquid storage tank 5, cooling water is filled in the coil pipe, and the guided sealing liquid returns to the sealing cavity after being cooled, so that the effect of reducing the working temperature of the shear pump 1 is achieved, the working environment of the mechanical seal is improved, and the reliability and the service life of the mechanical seal are improved. In addition, the sealing liquid circulates in the shear pump 1 and the liquid storage tank 5 to take away the friction heat of the mechanical seal and lubricate the mechanical seal.
In order to ensure the safe operation of the machine seal, a monitoring device is arranged, and when the pressure is reduced due to leakage of the machine seal, the pressure alarm device can give an alarm in time, and a user can take maintenance measures in time. The system is also provided with a thermometer 601 and a pressure gauge 602, so that the pressure and temperature change condition of the system can be known in time. The device can realize the functions of protecting the environment and producing safely, and enlarges the application range of the mechanical seal.
The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.
Claims (6)
1. The shearing pump sealing system for the carbon fiber spinning solution is characterized by comprising a shearing pump (1), wherein the shearing pump (1) comprises a pump body (101) and a pump head (102), the pump body (101) is communicated with the pump head (102) through a mechanical sealing cavity (103), a stock solution input pipeline (2) and a stock solution output pipeline (4) are arranged on the shearing pump (1), a pressure transmitter (3) and a pressure alarm switch (12) are arranged on the stock solution input pipeline (2), and the mechanical sealing cavity (103) is communicated with a liquid storage tank (5);
The pressure transmitter (3) detects the pressure of the stock solution input pipeline (2), and when the pressure of the stock solution input pipeline (2) exceeds a set value, the shearing pump (1) stops working.
2. A shear pump fluid sealing system for a carbon fiber spinning dope as claimed in claim 1, wherein: the mechanical seal cavity (103) is provided with a medium seal side interface (104) and an atmosphere seal side interface (105), and the medium seal side interface (104) and the atmosphere seal side interface (105) are respectively communicated with the liquid storage tank (5) through a first circulating pipeline (6) and a second circulating pipeline (7).
3. A shear pump fluid sealing system for a carbon fiber spinning dope as claimed in claim 1, wherein: the first circulating pipeline (6) is provided with a thermometer (601) and a pressure gauge (602), the thermometer (601) displays the temperature of the sealing liquid, and the pressure gauge (602) displays the pressure value of the sealing liquid.
4. A shear pump fluid sealing system for a carbon fiber spinning dope as claimed in claim 1, wherein: a coil pipe (13) is arranged in the liquid storage tank (5), a water inlet end of the coil pipe (13) is connected with a cooling water inlet valve (8), the cooling water inlet valve (8) is connected with external circulating water, the circulating water circulates in the coil pipe (13) and exchanges heat with sealing liquid outside, the temperature of the sealing liquid is reduced, and a cooling water outlet valve (10) is arranged at the other end of the coil pipe (13).
5. A shear pump fluid sealing system for a carbon fiber spinning dope as claimed in claim 1, wherein: the top of the liquid storage tank (5) is provided with a liquid injection port (11) for adding sealing liquid.
6. A shear pump fluid sealing system for a carbon fiber spinning dope as claimed in claim 1, wherein: the top end of the liquid storage tank (5) is also provided with a vent pipe, and an electric regulating valve (9) is arranged on the vent pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322884582.1U CN221074592U (en) | 2023-10-26 | 2023-10-26 | Be applied to shearing pump liquid sealing system of carbon fiber spinning stoste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322884582.1U CN221074592U (en) | 2023-10-26 | 2023-10-26 | Be applied to shearing pump liquid sealing system of carbon fiber spinning stoste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074592U true CN221074592U (en) | 2024-06-04 |
Family
ID=91267071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322884582.1U Active CN221074592U (en) | 2023-10-26 | 2023-10-26 | Be applied to shearing pump liquid sealing system of carbon fiber spinning stoste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074592U (en) |
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2023
- 2023-10-26 CN CN202322884582.1U patent/CN221074592U/en active Active
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