CN205138075U - Can maintain empty system oxygen switched systems that divides of operation in valves malfunction - Google Patents
Can maintain empty system oxygen switched systems that divides of operation in valves malfunction Download PDFInfo
- Publication number
- CN205138075U CN205138075U CN201520893732.8U CN201520893732U CN205138075U CN 205138075 U CN205138075 U CN 205138075U CN 201520893732 U CN201520893732 U CN 201520893732U CN 205138075 U CN205138075 U CN 205138075U
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- valve
- cut
- heat exchanger
- nitrogen
- gas
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Abstract
The utility model discloses a can maintain empty system oxygen switched systems that divides of operation in valves malfunction cuts at original empty 1# cut -in without ball valve that divides system oxygen switched systems and 2# nitrogen and has add an intercommunication valve A between the valve, and 2# cut -in without ball valve and 1# nitrogen are cut and has been add an intercommunication valve B between the valve, and 3# cut -in without ball valve and 4# nitrogen are cut and has been add an intercommunication valve C between the valve, and 4# cut -in without ball valve and 3# nitrogen are cut and has been add an intercommunication valve D between the valve. The utility model discloses increasing between corresponding valves and having adorned an intercommunication valve, when the valves breaks down, can make the empty system oxygen switched systems that divides still can maintain the production run through opening the intercommunication valve, reduced because of the compelled economic loss who stops production and cause of valves trouble, overhaul period when also having shortened the switched systems trouble simultaneously has very strong popularization and application and worth.
Description
Technical field
The utility model belongs to making oxygen by air separation mechanical equipment technical field, is specifically related to a kind of making oxygen by air separation switched system that can maintain operation under valve group malfunction.
Background technology
Kun Gang power source branch company oxygen generating plant has 6000Nm3/h making oxygen by air separation equipment, this equipment is built in the beginning of the nineties in last century, the technical process of oxygen front end is: the forced air that Air turbocompressor comes is first through heat exchanger switched system, carry out heat exchange by whole valves of PLC control program Time-sharing control switched system to control, the preprocessing function that before completing deep cooling oxygen, oxygen, nitrogen are separated.6000Nm3/h making oxygen by air separation front-end process system has four heat exchangers, is divided into two groups, and often in group, a heat exchanger passes into compressed air, and another then flows out the dirty nitrogen of low temperature after empty point.The air entering heat exchanger is called " positive gas body ", and the dirty nitrogen of low temperature flowing through heat exchanger is called " reflux gas ".Valve transfer function is made up of 10 Controlling solenoid valve and corresponding 2 two cylinder pneumatic operated valves, switches require to drive 2 two cylinder pneumatic operated valve timesharing to carry out action by PLC Controlling solenoid valve according to technique.Owing to switching the particularity structure of Controlling Technology system, in production process Controlling solenoid valve ceaselessly powered, electric, when occurring that Controlling solenoid valve coil burnout is failure to actuate, corresponding 2 two cylinder pneumatic operated valves just cannot control, finally can only be forced to stop production process, Controlling solenoid valve overhauled or changes, causing economic loss.Therefore research and develop a kind of making oxygen by air separation switched system that can run in the maintenance of valve group malfunction to be necessary.
Utility model content
The purpose of this utility model is to provide a kind of making oxygen by air separation switched system that still can maintain production run when valve group fault.
The purpose of this utility model realizes like this, a kind of making oxygen by air separation switched system that can maintain operation in valve group malfunction, comprise and just flow gas passage, reflux gas passage, heat exchanger, 1# balanced valve, 2# balanced valve, the gas access of described heat exchanger with just flow gas passage and be connected, the gas vent of described heat exchanger is connected with reflux gas passage, described heat exchanger and just flowing between gas passage and be provided with cut-in without ball valve, be provided with nitrogen between described heat exchanger and reflux gas passage and cut valve, described heat exchanger comprises 1# heat exchanger, 2# heat exchanger, 3# heat exchanger and 4# heat exchanger, the gas access of described 1# heat exchanger with just flow gas passage and be connected and 1# cut-in without ball valve is installed between the two, the gas vent of described 1# heat exchanger is connected with reflux gas passage and is provided with 1# nitrogen between the two and cuts valve, the gas access of described 2# heat exchanger with just flow gas passage and be connected and 2# cut-in without ball valve is installed between the two, the gas vent of described 2# heat exchanger is connected with reflux gas passage and is provided with 2# nitrogen between the two and cuts valve, the gas access of described 3# heat exchanger with just flow gas passage and be connected and 3# cut-in without ball valve is installed between the two, the gas vent of described 3# heat exchanger is connected with reflux gas passage and is provided with 3# nitrogen between the two and cuts valve, the gas access of described 4# heat exchanger with just flow gas passage and be connected and 4# cut-in without ball valve is installed between the two, the gas vent of described 4# heat exchanger is connected with reflux gas passage and is provided with 4# nitrogen between the two and cuts valve, described 1# balanced valve is arranged between described 1# heat exchanger and the gas access of 2# heat exchanger, described 2# balanced valve is arranged between described 3# heat exchanger and the gas access of 4# heat exchanger, it is characterized in that: cut between valve at described 1# cut-in without ball valve and 2# nitrogen and be installed in addition with a communicating valve A, cut between valve and 2# cut-in without ball valve at described 1# nitrogen and be installed in addition with a communicating valve B, cut between valve at described 3# cut-in without ball valve and 4# nitrogen and be installed in addition with a communicating valve C, cut between valve and 4# cut-in without ball valve at described 3# nitrogen and be installed in addition with a communicating valve D.
The utility model by being installed in addition with a communicating valve between corresponding valve group, when valve group breaks down, making oxygen by air separation switched system can be made still can to maintain production run by communicating valve, decrease because valve group fault is forced to stop production the economic loss caused, also shorten time between overhauls(TBO) during switched system fault simultaneously, there is very strong application value.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is that the sky point of the utility model switches system valve group sequential schematic diagram;
In figure: 1-1# heat exchanger, 2-2# heat exchanger, 3-3# heat exchanger, 4-4# heat exchanger, 5-1# balanced valve, 6-2# balanced valve, 7-1# cut-in without ball valve, 8-1# nitrogen cuts valve, 9-2# cut-in without ball valve, 10-2# nitrogen cuts valve, 11-3# cut-in without ball valve, 12-3# nitrogen cuts valve, 13-4# cut-in without ball valve, 14-4# nitrogen cuts valve, 15-communicating valve A, 16-communicating valve B, 17-communicating valve C, 18-communicating valve D, the Controlling solenoid valve of 19-1# cut-in without ball valve controls gas circuit, the Controlling solenoid valve that 20-2# nitrogen cuts valve controls gas circuit, the Controlling solenoid valve that 21-1# nitrogen cuts valve controls gas circuit, the Controlling solenoid valve of 22-2# cut-in without ball valve controls gas circuit, the Controlling solenoid valve of 23-3# cut-in without ball valve controls gas circuit, the Controlling solenoid valve that 24-4# nitrogen cuts valve controls gas circuit, the Controlling solenoid valve that 25-3# nitrogen cuts valve controls gas circuit, the Controlling solenoid valve of 26-4# cut-in without ball valve controls gas circuit.
Detailed description of the invention
Be further described the utility model below in conjunction with accompanying drawing, but limited the utility model never in any form, any conversion done based on the utility model training centre or improvement, all fall into protection domain of the present utility model.
As shown in Figure 1, the utility model comprises and just flows gas passage, reflux gas passage, heat exchanger, 1# balanced valve 5, 2# balanced valve 6, the gas access of described heat exchanger with just flow gas passage and be connected, the gas vent of described heat exchanger is connected with reflux gas passage, described heat exchanger and just flowing between gas passage and be provided with cut-in without ball valve, be provided with nitrogen between described heat exchanger and reflux gas passage and cut valve, described heat exchanger comprises 1# heat exchanger 1, 2# heat exchanger 2, 3# heat exchanger 3 and 4# heat exchanger 4, the gas access of described 1# heat exchanger 1 by pipeline with just flow gas passage and be connected, the gas access of described 1# heat exchanger 1 and just flowing between gas passage and be provided with 1# cut-in without ball valve 7, described 1# cut-in without ball valve 7 controls the inflow of described 1# heat exchanger 1 air, the gas vent of described 1# heat exchanger 1 is connected with reflux gas passage by pipeline, between the gas vent of described 1# heat exchanger 1 and reflux gas passage, 1# nitrogen is installed and cuts valve 8, described 1# nitrogen cuts the outflow that valve 8 controls the dirty nitrogen of described 1# heat exchanger 1, the gas access of described 2# heat exchanger 2 by pipeline with just flow gas passage and be connected, the gas access of described 2# heat exchanger 2 and just flowing between gas passage and be provided with 2# cut-in without ball valve 9, described 2# cut-in without ball valve 9 controls the inflow of described 2# heat exchanger 2 air, the gas vent of described 2# heat exchanger 2 is connected with reflux gas passage by pipeline, between the gas vent of described 2# heat exchanger 2 and reflux gas passage, 2# nitrogen is installed and cuts valve 10, described 2# nitrogen cuts the outflow that valve 10 controls the dirty nitrogen of described 2# heat exchanger 2, the gas access of described 3# heat exchanger 3 by pipeline with just flow gas passage and be connected, the gas access of described 3# heat exchanger 3 and just flowing between gas passage and be provided with 3# cut-in without ball valve 11, described 3# cut-in without ball valve 11 controls the inflow of described 3# heat exchanger 3 air, the gas vent of described 3# heat exchanger 3 is connected with reflux gas passage by pipeline, between the gas vent of described 3# heat exchanger 3 and reflux gas passage, 3# nitrogen is installed and cuts valve 12, described 3# nitrogen cuts the outflow that valve 12 controls the dirty nitrogen of described 3# heat exchanger 3, the gas access of described 4# heat exchanger 4 by pipeline with just flow gas passage and be connected, the gas access of described 4# heat exchanger 4 and just flowing between gas passage and be provided with 4# cut-in without ball valve 13, described 4# cut-in without ball valve 13 controls the inflow of described 4# heat exchanger 4 air, the gas vent of described 4# heat exchanger 4 is connected with reflux gas passage by pipeline, between the gas vent of described 4# heat exchanger 4 and reflux gas passage, 4# nitrogen is installed and cuts valve 14, described 4# nitrogen cuts the outflow that valve 14 controls the dirty nitrogen of described 4# heat exchanger 4, the balanced described 1# heat exchanger 1 of described 1# balanced valve 5 and the air pressure in 2# heat exchanger 2, be connected between described 1# heat exchanger 2 and the gas access of 2# heat exchanger 2 by pipeline, the balanced described 3# heat exchanger 3 of described 2# balanced valve 6 and the air pressure in 4# heat exchanger 4, be connected between described 3# heat exchanger 3 and the gas access of 4# heat exchanger 4 by pipeline, it is characterized in that: cut between valve 10 at described 1# cut-in without ball valve 7 and 2# nitrogen and be installed in addition with a communicating valve A15, cut between valve 8 and 2# cut-in without ball valve 9 at described 1# nitrogen and be installed in addition with a communicating valve B16, cut between valve 14 at described 3# cut-in without ball valve 11 and 4# nitrogen and be installed in addition with a communicating valve C17, cut between valve 12 and 4# cut-in without ball valve 13 at described 3# nitrogen and be installed in addition with a communicating valve D18.
Described communicating valve A15, communicating valve B16, communicating valve C17, communicating valve D18 all adopt DN15 cast iron slide valve, and reducing tube head is all installed at two ends.
The pipeline that the Controlling solenoid valve that one end of described communicating valve A15 is connected to 1# cut-in without ball valve 7 controls gas circuit 19 end is communicated with the control air inlet of 2 two cylinder pneumatic operated valves, and the other end to be connected on pipeline that Controlling solenoid valve that 2# nitrogen cuts valve controls gas circuit 20 end and to be communicated with the control air inlet that 2# nitrogen cuts 2 two cylinder pneumatic operated valves of valve 10.
The pipeline that the Controlling solenoid valve that one end of described communicating valve B16 is connected in 2# cut-in without ball valve controls gas circuit 22 end is communicated with the control air inlet of 2 two cylinder pneumatic operated valves of 2# cut-in without ball valve 9, and the other end to be connected on pipeline that Controlling solenoid valve that 1# nitrogen cuts valve controls gas circuit 21 end and to be communicated with the control air inlet that 1# nitrogen cuts 2 two cylinder pneumatic operated valves of valve 8.
One end of described communicating valve C17 is connected on the pipeline of Controlling solenoid valve control gas circuit 23 end of 3# cut-in without ball valve, and the control air inlet of 2 that are communicated with 3# cut-in without ball valve 11 two cylinder pneumatic operated valves, the other end to be connected on pipeline that Controlling solenoid valve that 4# nitrogen cuts valve controls gas circuit 24 end and to be communicated with the control air inlet that 4# nitrogen cuts 2 two cylinder pneumatic operated valves of valve 14.
One end of described communicating valve D18 is connected on the pipeline of Controlling solenoid valve control gas circuit 26 end of 4# cut-in without ball valve, and the control air inlet of 2 that are communicated with 4# cut-in without ball valve 13 two cylinder pneumatic operated valves, the other end to be connected on pipeline that Controlling solenoid valve that 3# nitrogen cuts valve controls gas circuit 25 end and to be communicated with the control air inlet that 3# nitrogen cuts 2 two cylinder pneumatic operated valves of valve 12.
operation principle of the present utility model and the course of work
The utility model is installed in addition with a communicating valve A15 by cutting between valve 10 at the 1# cut-in without ball valve 7 of original making oxygen by air separation switched system and 2# nitrogen, cut between valve 8 and 2# cut-in without ball valve 9 at described 1# nitrogen and be installed in addition with a communicating valve B16, cut between valve 14 at described 3# cut-in without ball valve 11 and 4# nitrogen and be installed in addition with a communicating valve C17, cut between valve 12 and 4# cut-in without ball valve 4 at described 3# nitrogen and be installed in addition with a communicating valve D18.Described four communicating valves all adopt DN15 cast iron slide valve, are connected after pipe reducer connects with the heavy wall copper pipeline of external diameter φ 16mm, wall thickness 2mm, are finally connected to the control air inlet of 2 corresponding two cylinder pneumatic operated valves.
Its action mechanism is:
In some moment that technique switches, 1# cut-in without ball valve 7 is opened, and 1# heat exchanger 1 passes into positive gas body, and 2# nitrogen is cut valve 10 unlatching and flow through reflux gas, and now 2# cut-in without ball valve 9,1# nitrogen are cut valve 8 and is in closed condition.The swap time switching system process control overflow by 6000Nm3/h sky point was the initial radix time with 15 seconds, rear 9 gears are with 30(1+N) second is measurement unit timing, (N=0 ~ 8), be ten gear swap operation times (by operation personnel drive and stop and variable working condition process operation time switched voluntarily by interlocking-type switch).At the end of (15 ~ 270) timing, follow procedure 1# cut-in without ball valve 7,2# nitrogen are cut valve 10 and are closed.After 2 seconds, 1# balanced valve 5 opens 3 seconds, and positive and negative gas body in 1# heat exchanger 1,2# heat exchanger 2 is all pressed, and after 1# balanced valve 5 cuts out 2 seconds, 2# cut-in without ball valve 9,1# nitrogen are cut valve 8 and opened, and flow through corresponding " positive and negative gas body ", now program restarts timing.Control step sequence and the above-mentioned 1# heat exchanger 1 of 3# heat exchanger 3,4 groups, 4# heat exchanger, 2 groups, 2# heat exchanger are identical, and just two groups of heat exchanger state of a controls exchanges were staggered for 1/2nd cycles.Whole Control timing sequence principle is as Fig. 2.
During normal condition, connection A15, communicating valve B16, communicating valve C17, communicating valve D18 are all in closed condition, when 1# cut-in without ball valve 7 Controlling solenoid valve fault, open troubleshooting valve A15, control 2# nitrogen cuts the power gas of valve 10 by the cylinder of communicating valve A15 arrival 1# cut-in without ball valve 7, promotes 1# cut-in without ball valve 7 and continues action; Otherwise when 2# nitrogen cuts valve 10 Controlling solenoid valve fault, the power gas of control 1# cut-in without ball valve 7 arrives by communicating valve A15 the cylinder that 2# nitrogen cuts valve 10, and promotion 2# nitrogen is cut valve 10 and continued action.Maintain the normal handoff functionality of switched system, after Controlling solenoid valve to be replaced, former state of a control can be recovered and run.
1# nitrogen cuts valve 8 and 2# cut-in without ball valve 9,3# cut-in without ball valve 11 and 4# nitrogen cut valve 14,3# nitrogen cuts valve 12 and action mechanism between 4# cut-in without ball valve 13 valve group as above.
Claims (6)
1. one kind can maintain in valve group malfunction the making oxygen by air separation switched system run, comprise and just flow gas passage, reflux gas passage, heat exchanger, 1# balanced valve (5), 2# balanced valve (6), the gas access of described heat exchanger with just flow gas passage and be connected, the gas vent of described heat exchanger is connected with reflux gas passage, described heat exchanger and just flowing between gas passage and be provided with cut-in without ball valve, be provided with nitrogen between described heat exchanger and reflux gas passage and cut valve, described heat exchanger comprises 1# heat exchanger (1), 2# heat exchanger (2), 3# heat exchanger (3) and 4# heat exchanger (4), the gas access of described 1# heat exchanger (1) with just flow gas passage and be connected and 1# cut-in without ball valve (7) is installed between the two, the gas vent of described 1# heat exchanger (1) is connected with reflux gas passage and is provided with 1# nitrogen between the two and cuts valve (8), the gas access of described 2# heat exchanger (2) with just flow gas passage and be connected and 2# cut-in without ball valve (9) is installed between the two, the gas vent of described 2# heat exchanger (2) is connected with reflux gas passage and is provided with 2# nitrogen between the two and cuts valve (10), the gas access of described 3# heat exchanger (3) with just flow gas passage and be connected and 3# cut-in without ball valve (11) is installed between the two, the gas vent of described 3# heat exchanger (3) is connected with reflux gas passage and is provided with 3# nitrogen between the two and cuts valve (12), the gas access of described 4# heat exchanger (4) with just flow gas passage and be connected and 4# cut-in without ball valve (13) is installed between the two, the gas vent of described 4# heat exchanger (4) is connected with reflux gas passage and is provided with 4# nitrogen between the two and cuts valve (14), described 1# balanced valve (5) is arranged between described 1# heat exchanger (2) and the gas access of 2# heat exchanger (2), described 2# balanced valve (6) is arranged between described 3# heat exchanger (3) and the gas access of 4# heat exchanger (4), it is characterized in that: cut between valve (10) described 1# cut-in without ball valve (7) and 2# nitrogen and be installed in addition with a communicating valve A(15), cut between valve (8) and 2# cut-in without ball valve (9) at described 1# nitrogen and be installed in addition with a communicating valve B(16), cut between valve (14) described 3# cut-in without ball valve (11) and 4# nitrogen and be installed in addition with a communicating valve C(17), cut between valve (12) and 4# cut-in without ball valve (13) at described 3# nitrogen and be installed in addition with a communicating valve D(18).
2. the making oxygen by air separation switched system that can maintain operation in valve group malfunction according to claim 1, it is characterized in that: described communicating valve A(15), communicating valve B(16), communicating valve C(17), communicating valve D(18) all adopt DN15 cast iron slide valve, reducing tube head is all installed at two ends.
3. the making oxygen by air separation switched system that can maintain operation in valve group malfunction according to claim 1 and 2, it is characterized in that: described communicating valve A(15) one end Controlling solenoid valve of being connected to 1# cut-in without ball valve (7) control gas circuit (19) end pipeline on and be communicated with the control air inlet of 2 two cylinder pneumatic operated valves, the other end to be connected on pipeline that Controlling solenoid valve that 2# nitrogen cuts valve controls gas circuit (20) end and to be communicated with the control air inlet that 2# nitrogen cuts 2 two cylinder pneumatic operated valves of valve (10).
4. the making oxygen by air separation switched system that can maintain operation in valve group malfunction according to claim 1 and 2, it is characterized in that: described communicating valve B(16) one end Controlling solenoid valve of being connected in 2# cut-in without ball valve control gas circuit (22) end pipeline on and be communicated with the control air inlet of the two cylinder pneumatic operated valves of 2# cut-in without ball valve (9) 2, the other end to be connected on pipeline that Controlling solenoid valve that 1# nitrogen cuts valve controls gas circuit (21) end and to be communicated with the control air inlet that 1# nitrogen cuts 2 two cylinder pneumatic operated valves of valve (8).
5. the making oxygen by air separation switched system that can maintain operation in valve group malfunction according to claim 1 and 2, it is characterized in that: described communicating valve C(17) one end be connected in 3# cut-in without ball valve Controlling solenoid valve control gas circuit (23) end pipeline on, and being communicated with the control air inlet of the two cylinder pneumatic operated valves of 3# cut-in without ball valve (11) 2, the other end to be connected on pipeline that Controlling solenoid valve that 4# nitrogen cuts valve controls gas circuit (24) end and to be communicated with the control air inlet that 4# nitrogen cuts 2 two cylinder pneumatic operated valves of valve (14).
6. the making oxygen by air separation switched system that can maintain operation in valve group malfunction according to claim 1 and 2, it is characterized in that: described communicating valve D(18) one end be connected in 4# cut-in without ball valve Controlling solenoid valve control gas circuit (26) end pipeline on, and being communicated with the control air inlet of the two cylinder pneumatic operated valves of 4# cut-in without ball valve (13) 2, the other end to be connected on pipeline that Controlling solenoid valve that 3# nitrogen cuts valve controls gas circuit (25) end and to be communicated with the control air inlet that 3# nitrogen cuts 2 two cylinder pneumatic operated valves of valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893732.8U CN205138075U (en) | 2015-11-11 | 2015-11-11 | Can maintain empty system oxygen switched systems that divides of operation in valves malfunction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893732.8U CN205138075U (en) | 2015-11-11 | 2015-11-11 | Can maintain empty system oxygen switched systems that divides of operation in valves malfunction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205138075U true CN205138075U (en) | 2016-04-06 |
Family
ID=55623861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520893732.8U Expired - Fee Related CN205138075U (en) | 2015-11-11 | 2015-11-11 | Can maintain empty system oxygen switched systems that divides of operation in valves malfunction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205138075U (en) |
-
2015
- 2015-11-11 CN CN201520893732.8U patent/CN205138075U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20211111 |