CN220558901U - High-pressure athermal regeneration dryer - Google Patents
High-pressure athermal regeneration dryer Download PDFInfo
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- CN220558901U CN220558901U CN202321402253.2U CN202321402253U CN220558901U CN 220558901 U CN220558901 U CN 220558901U CN 202321402253 U CN202321402253 U CN 202321402253U CN 220558901 U CN220558901 U CN 220558901U
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- 230000008929 regeneration Effects 0.000 title abstract description 26
- 238000011069 regeneration method Methods 0.000 title abstract description 26
- 238000001179 sorption measurement Methods 0.000 claims abstract description 53
- 238000003860 storage Methods 0.000 claims abstract description 9
- 239000002274 desiccant Substances 0.000 claims description 15
- 230000001172 regenerating effect Effects 0.000 claims description 12
- 238000011045 prefiltration Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
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- 238000000034 method Methods 0.000 description 21
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- 238000013461 design Methods 0.000 description 5
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- 238000010298 pulverizing process Methods 0.000 description 2
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- 239000010935 stainless steel Substances 0.000 description 2
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- 230000001580 bacterial effect Effects 0.000 description 1
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- Drying Of Gases (AREA)
Abstract
The utility model discloses a high-pressure athermal regeneration dryer which comprises two adsorption towers, a front filter, a rear filter, a valve, a control unit and the like. The utility model is designed for a three-valve structure, an upper one-way valve set is designed, a two-stage pressure reducing valve is used for separating gas, an adsorption tower is integrated with a pre-distributor and a separation cavity, a pressure equalizing pipeline is arranged, a front filter and a rear filter are integrated, and a bypass loop with a gas storage device is arranged. The utility model realizes continuous drying treatment of high-pressure gas of 100bar or more, has excellent performance, less control valve quantity, simple and compact pipeline, accurate and stable regenerated gas flow control, can adapt to the fluctuation of the inlet gas pressure, has high reliability, and avoids the influence of liquid water or mist entrained in the inlet gas on the performance of the machine.
Description
Technical Field
The utility model belongs to the technical field of gas dryers, and particularly relates to a high-pressure athermal regeneration dryer.
Background
The compressed gas at the outlet of the air compressor has a high relative humidity, which is unavoidable in the process of generating the compressed gas. Typical hazards to the system equipment from moisture in the compressed gas are: corrosion of metal tubing equipment, degradation in performance or quality caused by direct contact of steam or liquid water with control equipment & products on the production line, and bacterial growth. And if the system is a high-pressure compressed gas system, the water content is higher, and the hazard is also larger.
One way to solve the problem of high pressure compressed gas humidification is to use a athermal regenerative dryer, which, based on the pressure swing adsorption principle, minimizes the dew point of the compressed air to below-40 ℃, even to-70 ℃, whereas a conventional athermal regenerative dryer cannot be adapted for gas drying under high pressure conditions: 1. the pressure fluctuation at high pressure causes inaccurate regeneration gas quantity, and affects the drying effect; 2. excessive instantaneous impact force of pressure release under high pressure causes desiccant pulverization failure; 3. liquid water entering causes a significant drop in dryer performance; 4. cannot withstand high pressure conditions.
In another design of the high-pressure gas dryer, the function is single and the structure is complex. Such as CN 205216507U, which employs a five-valve structure to achieve dual-column swing adsorption/regeneration; the needle valve is additionally arranged to relieve pressure release impact. The regeneration tower is limited by the specification of an exhaust valve, residual pressure exists in the regeneration tower, and the regenerated gas does not reach the optimal drying degree. When the regeneration air flow is required to be adjusted according to the intake air temperature, only the regeneration valves with different specifications can be replaced. The method can not adapt to the fluctuation working condition, and when the actual air inlet pressure is lower than the designed air inlet pressure, the actual regenerated air flow is lower than the designed regenerated air flow, so that the regenerated drying effect is affected.
In yet another design of high pressure gas dryer, such as CN 216778427U, liquid water, particulates, oil entrained in the humid air directly enters the adsorption column, where the water can cause premature saturation of the desiccant, exceeding dew point, and particulates and oil can clog or cover desiccant pores and surfaces, causing irreversible performance and life degradation; one end of the filtering pressure reducing valve is connected with the air inlet, and the other end of the filtering pressure reducing valve is respectively connected with coils of the first electromagnetic valve and the second electromagnetic valve, so that the electromagnetic valve control cannot be realized; gaseous water carried in saturated humid air cannot be removed through a filtering pressure reducing valve, liquid water is formed by condensation of a rear end pipeline, and the service life and reliability of a rear end assembly are damaged; the electromagnetic valve switch needs to overcome high-voltage differential pressure, and has high power; the device is limited by an electromagnetic valve, cannot be suitable for large flow, and is suitable for a micro dryer under small flow; the valve core of the upper shuttle valve structure is a reciprocating motion piece, is worn under high-frequency action, needs to be replaced regularly, is easy to be blocked by desiccant particles or rust residues and the like, and causes complete failure of functions; the orifice plate is directly communicated with the adsorption tower, the system pressure fluctuation can directly influence the gas flow passing through the orifice plate, the same can not adapt to fluctuation working conditions, and the regeneration drying effect is easily affected.
Disclosure of Invention
The present utility model is directed to a high pressure athermal regenerative dryer to solve the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a high-pressure athermal regeneration dryer comprises a pre-filter F1, an adsorption tower B2, a four-way valve V1/V2, a pressure-building valve V3, a flow-limiting orifice plate XD1, an exhaust valve V4, a flow-limiting orifice plate XD2, a muffler XS1, a one-way valve group VB1, a primary pressure-reducing valve X1, a distributor D1, a safety pressure-reducing valve X3, a quick gas-taking port X12, a secondary pressure-reducing valve X2, an electromagnetic valve group D2, a gas storage device PS1, a flow-regulating valve X15, a post-filter F2 and a control unit C1.
The lower part of the adsorption tower B1 and the lower part of the adsorption tower B2 are respectively connected with two supply port pipelines of the four-way valve V1/V2: the inlet of the prefilter F1 is connected with an air inlet J1 pipeline through an internal channel of the four-way valve V1/V2; the other internal channel of the four-way valve V1/V2 is connected with an inlet pipeline of the exhaust valve V4; the outlet of the exhaust valve V4 is connected with a flow limiting orifice plate XD2 and a muffler XS1 in series.
The lower connecting pipeline of the adsorption tower B1 and the lower connecting pipeline of the adsorption tower B2 are respectively connected with pipelines at two ends of the pressure building valve V3 through three-way branches, and a flow limiting pore plate XD1 is arranged on the connecting pipeline.
The upper part of the adsorption tower B1 is connected with one end of the check valve group VB1 through a pipeline, and is connected with the air outlet O1 through a check valve R1 and a post filter F2 in the check valve group VB1 through a pipeline.
The upper part of the adsorption tower B2 is connected with the other end of the check valve group VB1 through a gas pipeline, and is connected with the gas outlet O1 through a check valve R2 and a post filter F2 in the check valve group VB 1.
The gas outlet O2 is connected with a pipeline of the first-stage pressure reducing valve X1 at the outlet side of the post filter F2 through a three-way branch, the outlet of the first-stage pressure reducing valve X1 is connected with an inlet pipeline of the distributor D1, and gas is distributed to the flow regulating valve X15, the second-stage pressure reducing valve X2, the safety pressure reducing valve X3 and the quick gas taking port X12 through an internal channel of the distributor D1. The air outlet of the secondary pressure reducing valve X2 is connected with the inlet pipeline of the electromagnetic valve group D2, and control air is respectively distributed to pneumatic actuating mechanisms of the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 through the electromagnetic valve group D2 to control the opening and closing of the valves.
A bypass loop is arranged on the control gas pipeline of the four-way valve V1/V2, and a gas storage device PS1 is arranged on the bypass loop.
The inside of the adsorption tower B1 and the adsorption tower B2 are sequentially provided with distributors B1.1 and B2.1, demisters B1.2 and B2.2, drying agents B1.3 and B2.3 and distributors B1.4 and B2.4 from bottom to top.
The adsorption function switching program is controlled by the control unit C1 and is provided with a time control mode and a dew point control mode, and in the time control mode, the control unit is switched at regular time according to the switching time set by a factory; in the dew point control mode, the control unit performs energy-saving control as required according to the dew point measurement value at the outlet side.
The control unit C1 controls the switch states of the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 according to state switching, and further controls the on-off of each air passage.
The technical effects and advantages of the present utility model are as follows.
The utility model adopts a three-valve structure design, realizes the parallel processing of moisture adsorption drying and regeneration gas evacuation through one four-way valve, realizes the function which can be realized by a five-valve structure originally, has simple structure, fewer control points and high reliability.
The upper one-way valve group design of the utility model realizes that one tower supplies dry gas to the outside in the double-tower design, and the other tower guides a small part of dry gas to regenerate.
The utility model uses two independent pressure reducing valves to control gas and regenerated gas, to ensure stable gas flow and pressure, and to operate reliably.
According to the utility model, the pre-distributor is arranged at two ends of each adsorption tower, so that the uniform distribution of air flow of the inner section of the tower is realized, and the drying effect is ensured.
The utility model arranges a pre-separation cavity at the bottom of each adsorption tower, and a demister is arranged in the pre-separation cavity, so that the pre-interception of liquid water or mist carried in wet air is realized, and the liquid water or mist is directly discharged along with regenerated gas, thereby improving the operation stability.
The pressure equalizing pipeline with the pressure establishing valve and the flow limiting pore plate is arranged between the two adsorption towers, so that the pressure equalizing process before the double towers are switched is realized, and the stability and no fluctuation of the gas transmission pressure towards the rear end in the switching process are ensured.
According to the utility model, the regeneration exhaust port is provided with the flow limiting pore plate, so that the abrasion and pulverization of the drying agent caused by rapid pressure change in the pressure release process are avoided.
The safety exhaust valve of the low-pressure control gas circuit can protect the control valve and the secondary component, and personal or property damage caused by equipment damage is avoided.
According to the utility model, the high-precision stainless steel pre-filter is integrally arranged at the gas inlet, so that solid particles and oil drops are separated, and the service life of the drying agent is prolonged.
According to the utility model, the high-precision stainless steel dust removal filter is integrally arranged at the gas outlet, so that impurities generated by a drying agent are removed, and the quality of conveying the drying gas is ensured; the use of purge gas for control and regeneration improves reliability and service life.
According to the utility model, the bypass loop with the gas storage device is arranged on the four-way valve control gas pipeline, so that the valve position is ensured to be blocked in the double-break abnormal state due to abnormal gas stopping, and the normal operation can be quickly recovered.
Drawings
FIG. 1 is a process flow diagram of the present utility model.
FIG. 2 is a schematic diagram showing the flow of the regenerated gas from the B1 column to the B2 column according to the present utility model.
FIG. 3 is a schematic diagram of the flow of gas under pressure in the B1 column and the B2 column of the present utility model.
FIG. 4 is a schematic diagram showing the flow of the adsorbed gas from the B1 column and the regeneration B2 column according to the present utility model.
FIG. 5 is a schematic diagram showing the flow of the gas adsorbed in the B1 column pressure build-up B2 column of the present utility model.
Fig. 6 is a functional sequence flow chart of the present utility model.
Fig. 7 is a schematic diagram of a four-way valve flow channel switching according to the present utility model.
In the figure: the device comprises a pre-filter F1, an adsorption tower B2, a four-way valve V1/V2, a pressure-building valve V3, a flow-limiting orifice plate XD1, an exhaust valve V4, a flow-limiting orifice plate XD2, a muffler XS1, a one-way valve group VB1, a primary pressure-reducing valve X1, a distributor D1, a safety pressure-reducing valve X3, a quick gas-taking port X12, a secondary pressure-reducing valve X2, an electromagnetic valve group D2, a gas storage device PS1, a flow-regulating valve X15, a post-filter F2 and a control unit C1.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
One embodiment of a high pressure athermal regenerative dryer of the present utility model is shown in fig. 1-5: the device comprises a pre-filter F1, an adsorption tower B2, a four-way valve V1/V2, a pressure-building valve V3, a flow-limiting orifice plate XD1, an exhaust valve V4, a flow-limiting orifice plate XD2, a muffler XS1, a one-way valve group VB1, a primary pressure-reducing valve X1, a distributor D1, a safety pressure-reducing valve X3, a quick gas-taking port X12, a secondary pressure-reducing valve X2, an electromagnetic valve group D2, a gas storage device PS1, a flow-regulating valve X15, a post-filter F2 and a control unit C1.
The lower part of the adsorption tower B1 and the lower part of the adsorption tower B2 are respectively connected with two air supply channels of the four-way valve V1/V2: the inlet of the prefilter F1 is connected with the air inlet J1 through the internal channel of the four-way valve V1/V2; the other internal channel of the four-way valve V1/V2 is connected with the inlet of the exhaust valve V4; the outlet of the exhaust valve V4 is connected with a flow limiting orifice plate XD2 and a muffler XS1 in series.
The lower connecting pipeline of the adsorption tower B1 and the lower connecting pipeline of the adsorption tower B2 are respectively connected with two ends of the pressure building valve V3 through three-way branches, and a flow limiting pore plate XD1 is arranged on the connecting pipeline.
The upper part of the adsorption tower B1 is connected with one end of the check valve group VB1 through a gas pipeline, and is connected with the gas outlet O1 through a check valve R1 and a post filter F2 in the check valve group VB 1.
The upper part of the adsorption tower B2 is connected with the other end of the check valve group VB1 through a gas pipeline, and is connected with the gas outlet O1 through a check valve R2 and a post filter F2 in the check valve group VB 1.
The air outlet O2 is connected with the first-stage pressure reducing valve X1 at the outlet side of the post filter F2 through a three-way branch, the outlet of the first-stage pressure reducing valve X1 is connected with the inlet of the distributor D1, and gas is distributed to the flow regulating valve X15, the second-stage pressure reducing valve X2, the safety pressure reducing valve X3 and the quick air taking port X12 through the internal channel of the distributor D1. The air outlet of the secondary pressure reducing valve X2 is connected with the inlet of the electromagnetic valve group D2, and control air is respectively distributed to pneumatic actuating mechanisms of the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 through the electromagnetic valve group D2 to control the opening and closing of the valves.
A bypass loop is arranged on the control gas pipeline of the four-way valve V1/V2, and a gas storage device PS1 is arranged on the bypass loop.
The inside of the adsorption tower B1 and the adsorption tower B2 are sequentially provided with distributors B1.1 and B2.1, demisters B1.2 and B2.2, drying agents B1.3 and B2.3 and distributors B1.4 and B2.4 from bottom to top.
The system is provided with a time control mode and a dew point control mode, the control unit C1 is switched according to the process state, and the switch of each electromagnetic valve in the electromagnetic valve group D2 is controlled, so that the on-off of each gas path is controlled.
The adsorption regeneration process comprises the following steps.
Adsorption process
Wet compressed gas enters a pre-filter from an air inlet pipeline interface, solid particles and suspended oil are filtered out, then the wet compressed gas enters an adsorption tower in an adsorption state through one channel of a four-way valve, water vapor is adsorbed by a drying agent after sequentially passing through a distributor, a separation cavity, a drying agent bed and the distributor in the tower, and becomes dry compressed air, the dry compressed air flows to an outlet side through a one-way valve, and particulate impurities are removed through a post-filter and then enter a downstream gas utilization point.
Regeneration process
When one adsorption tower is used for adsorption drying, a small part of clean and dried compressed air is led from the outlet at the rear end of the rear filter, is sent to a regeneration gas pipeline with a flow regulating valve after passing through a first-stage pressure reducing valve, and enters the adsorption tower in another regeneration state under the control of a one-way valve group. The regenerated gas becomes drier after decompression expansion, takes away the moisture in the drying agent bed layer in the tower, takes away the moisture in the demister in the tower, flows to the exhaust valve through the second channel of the four-way valve, and is discharged to the atmosphere after passing through the flow limiting orifice plate and the muffler.
Pressure building process
After the regeneration process is finished, the exhaust valve is closed, the pressure building valve is opened, a small part of air flow enters the adsorption tower after the regeneration is finished through the flow limiting orifice plate and the pressure building valve until the pressure balance of the two towers is achieved, the pressure building valve is closed, and the pressure building process is finished.
Standby process
After the pressure build-up process is completed, the regenerated tower enters a standby state. The standby time depends on the saturation of the desiccant in the adsorption tank.
Program switching
The two column switch will begin before the adsorption column in the adsorption state reaches the capacity limit of the desiccant. The adsorption switching program is controlled by the control unit, so that two modes of time control and dew point control are realized. In the time control mode, the control unit presets the switching time of the left and right adsorption towers according to factory setting, so that the drying and regeneration processes are switched at regular time. In the dew point control mode, the control unit switches the drying and regenerating processes according to the moisture content of the outlet gas according to the dew point measured value at the outlet side, so as to realize energy-saving control.
When switching, the four-way valve acts, the internal channel is switched, the tower after regeneration in the previous stage is switched into an adsorption state, and the wet air enters the tower. The exhaust valve is opened, the residual gas of the adsorbed saturation tower in the previous stage is slowly decompressed through the flow limiting orifice plate and the muffler and is discharged to the atmosphere, the regeneration state is shifted to, and a small part of clean and dry compressed air led out from the outlet at the rear end of the rear filter is controlled to enter the tower in the regeneration state through the one-way valve group.
And the dry and clean compressed air is continuously obtained by the gas utilization point through the double-tower circulation switching.
The applicant has further stated that the present utility model is described by the above examples as to the implementation method and apparatus structure of the present utility model, but the present utility model is not limited to the above embodiments, i.e. it does not mean that the present utility model must be implemented by the above methods and structures. It should be apparent to those skilled in the art that any modifications of the present utility model, equivalent substitutions for the implementation method selected for the present utility model, addition of steps, selection of specific modes, etc., fall within the scope of the present utility model and the scope of the disclosure.
The present utility model is not limited to the above embodiments, and all modes of achieving the object of the present utility model by adopting the structure and method similar to those of the present utility model are within the scope of the present utility model.
Claims (7)
1. A high pressure athermal regenerative dryer, characterized by: the device comprises a pre-filter F1, an adsorption tower B2, a four-way valve V1/V2, a pressure-building valve V3, a flow-limiting orifice plate XD1, an exhaust valve V4, a flow-limiting orifice plate XD2, a muffler XS1, a one-way valve group VB1, a primary pressure-reducing valve X1, a distributor D1, a safety pressure-reducing valve X3, a quick air-taking port X12, a secondary pressure-reducing valve X2, an electromagnetic valve group D2, a gas storage device PS1, a flow-regulating valve X15, a post-filter F2 and a control unit C1, and is characterized in that:
the lower parts of the adsorption tower B1 and the adsorption tower B2 are respectively connected with two air supply port pipelines of the four-way valve V1/V2, and are connected with an outlet pipeline of the pre-filter F1 through an internal channel of the four-way valve V1/V2, and an inlet of the pre-filter F1 is connected with an air inlet J1 pipeline; the other internal channel of the four-way valve V1/V2 is connected with an inlet pipeline of an exhaust valve V4, and an outlet of the exhaust valve V4 is connected with a flow limiting orifice plate XD2 and a muffler XS1 in series;
the lower connecting pipeline of the adsorption tower B1 and the lower connecting pipeline of the adsorption tower B2 are respectively connected with two ends of the pressure building valve V3 through three-way branches, and a flow limiting pore plate XD1 is arranged on the connecting pipeline;
the upper part of the adsorption tower B1 is connected with one end of the check valve group VB1 through a pipeline, and is connected with the air outlet O1 through a check valve R1 and a post filter F2 in the check valve group VB1 through a pipeline;
the upper part of the adsorption tower B2 is connected with the other end of the check valve group VB1 through a gas pipeline, and is connected with the gas outlet O1 through a check valve R2 and a post filter F2 in the check valve group VB 1;
the gas outlet O2 is connected with a pipeline of a first-stage pressure reducing valve X1 at the outlet side of the rear filter F2 through a three-way branch, the outlet of the first-stage pressure reducing valve X1 is connected with an inlet pipeline of a distributor D1, and gas is distributed to a flow regulating valve X15, a second-stage pressure reducing valve X2, a safety pressure reducing valve X3 and a quick gas taking port X12 through an internal channel of the distributor D1; the air outlet of the secondary pressure reducing valve X2 is connected with the inlet pipeline of the electromagnetic valve group D2, and control air is respectively distributed to pneumatic actuating mechanisms of the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 through the electromagnetic valve group D2 to control the opening and closing of the valves.
2. A high pressure athermal regenerative dryer as defined in claim 1, wherein: a bypass loop is arranged on the control gas pipeline of the four-way valve V1/V2, and a gas storage device PS1 is arranged on the bypass loop.
3. A high pressure athermal regenerative dryer as defined in claim 1, wherein: the inside of the adsorption tower B1 and the adsorption tower B2 are sequentially provided with distributors B1.1 and B2.1, demisters B1.2 and B2.2, drying agents B1.3 and B2.3 and distributors B1.4 and B2.4 from bottom to top.
4. A high pressure athermal regenerative dryer as defined in claim 1, wherein: the control unit is provided with a time control mode and a dew point control mode, and in the time control mode, the control unit is switched at regular time according to the switching time set by a factory; in the dew point control mode, the control unit performs energy-saving control as required according to the dew point measurement value at the outlet side.
5. A high pressure athermal regenerative dryer as defined in claim 1, wherein: the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 are pneumatic valves; the control unit C1 controls the on-off of each air passage by controlling the on-off of each electromagnetic valve in the electromagnetic valve group D2 according to the state switching, and further controls the on-off actions of the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4.
6. A high pressure athermal regenerative dryer as defined in claim 1, wherein: the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 are electric valves; the control unit C1 directly controls the opening and closing actions of the four-way valve V1/V2, the pressure building valve V3 and the exhaust valve V4 according to state switching.
7. A high pressure athermal regenerative dryer as defined in claim 1, wherein: the low-pressure pipeline part is provided with a safety relief valve X3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321402253.2U CN220558901U (en) | 2023-06-05 | 2023-06-05 | High-pressure athermal regeneration dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321402253.2U CN220558901U (en) | 2023-06-05 | 2023-06-05 | High-pressure athermal regeneration dryer |
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| CN220558901U true CN220558901U (en) | 2024-03-08 |
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| CN202321402253.2U Active CN220558901U (en) | 2023-06-05 | 2023-06-05 | High-pressure athermal regeneration dryer |
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