CN206905577U - A kind of negative pressure vapor condensation heat-exchange device is from gas extraction system - Google Patents
A kind of negative pressure vapor condensation heat-exchange device is from gas extraction system Download PDFInfo
- Publication number
- CN206905577U CN206905577U CN201720639444.9U CN201720639444U CN206905577U CN 206905577 U CN206905577 U CN 206905577U CN 201720639444 U CN201720639444 U CN 201720639444U CN 206905577 U CN206905577 U CN 206905577U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- negative pressure
- pipe
- exchange device
- vapor condensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of negative pressure vapor condensation heat-exchange device be the utility model is related to from gas extraction system, including the heat exchanger exported with steam inlet and steam condensate, it is characterised in that：Also include diameter reducing pipe and blast pipe, the diameter reducing pipe is connected in steam condensate outlet, one end of the blast pipe is connected to the top of heat exchanger to be connected with the gas-phase space in the heat exchanger, and the other end of the blast pipe is connected with the diameter reducing pipe.Negative pressure vapor condensation heat-exchange device in the utility model is from gas extraction system, one diameter reducing pipe and one section of blast pipe connected with heat exchanger steam side headroom are set on the condensate outlet pipe of vapor condensation heat-exchange device, the mutual conversion of dynamic head and hydrostatic head occurs at diameter reducing pipe for steam condensate, so as to produce negative pressure at undergauge, it is connected by blast pipe and extracts fixed gas above heat exchanger automatically, fixed gas takes system out of by the steam condensate to flow down at a high speed.The negative pressure vapor condensation heat-exchange device eliminates vavuum pump from gas extraction system, saves equipment investment, reduces energy consumption, saves operating cost.The negative pressure vapor condensation heat-exchange device is located at outside heat exchanger from the blast pipe in gas extraction system simultaneously, and stop valve, easy to operation and maintenance can be installed in blast pipe.
Description
Technical field
It the utility model is related to technical field of heat exchange equipment, and in particular to a kind of negative pressure vapor condensation heat-exchange device is from exhaust system
System.
Background technology
Steam is one of thermal source the most frequently used in chemical plant installations, is condensed by saturated vapor in heat exchanger and is changed with cold material
Heat is one of most typical heat transfer type, but the accumulation of the fixed gas of steam side can have a strong impact on heat exchanger efficiency.According to technique
The difference of condition and cold material physical parameter, the steam parameter (pressure, temperature) as thermal source is also different, and common are pressure is
40bar or 10bar low pressure steam.Under this kind of positive pressure, one air bleeding valve of setting is at the top of heat exchanger steam side
Regularly fixed gas can be discharged to air.But in some specific techniques, steam needs to be condensed as exhaust steam, as steam is saturating
Flat surface cooler (while being used as tower bottom reboiler), Glan condenser etc., steam typically participates in changing under the conditions of negative pressure or pressure-fired
Heat.For this kind of negative pressure or the vapour system of pressure-fired, air bleeding valve can not be used to arrange fixed gas from heat exchanger toward air.Existing skill
It is to set a minipump to be used to extract the fixed gas in vapour system outside heat exchanger in art.Purchase vavuum pump not only
Increase investment, vavuum pump can also be arranged to equipment and pipe arrangement brings complexity.Vavuum pump needs to consume a certain amount of power simultaneously
Steam, the discharge of steam can also bring air and noise pollution.
Authorization Notice No. is CN100354591C (Application No. 200310120895.4) Chinese invention patent《A kind of sheng, a reed pipe wind instrument
Larynx formula directly contacts steam condenser and its application method from exhaust》, wherein disclosed technical scheme is：Directly contacted conventional
Type steam condenser connects and a phacelloid throat section is set at barometric pipe, is the sheng, a reed pipe wind instrument trunnion beam of tubule composition in phacelloid throat section, on sheng, a reed pipe wind instrument larynx
End connects with fixed gas space more than condenser cooling water import, and lower end is in phacelloid throat section and entered at barometric pipe, and phacelloid throat section is high
0.2~1.5m, dynamic head is converted into using the potential head of dirty aqueous phase, so that water dropping velocity is accelerated, produces vacuum to aspirate
The fixed gas on condenser top.The bubble formed from sheng, a reed pipe wind instrument trunnion beam enters barometric pipe with dirty cooling water, is moved downwardly to big
Water seal bubbling discharge under air leg.A height of 10~the 15m of barometric pipe, to form vacuum necessary to evaporation operation.The patent
Blast pipe is arranged on inside condenser in scheme, therefore the technology can not be this kind of applied to tower bottom reboiler, turbine surface cooler etc.
Mediate contact steam condenser, being arranged at the blast pipe inside condenser is also inconvenient to overhaul with changing.
Utility model content
Technical problem to be solved in the utility model is can without vavuum pump for above-mentioned prior art offer one kind
Self-purging negative pressure vapor condensation heat-exchange device is realized from gas extraction system, energy consumption is low, easy to operation and maintenance, and operating cost
It is low.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of negative pressure vapor condensation heat-exchange device is certainly
Gas extraction system, including the heat exchanger exported with steam inlet and steam condensate, it is characterised in that：Also include diameter reducing pipe and row
Tracheae, the diameter reducing pipe are connected in steam condensate outlet, one end of the blast pipe be connected to the top of heat exchanger with
Gas-phase space in the heat exchanger is connected, and the other end of the blast pipe is connected with the diameter reducing pipe.
Easily, the stop valve of the blast pipe can be turned on and off by being provided with the blast pipe.
Preferably, the pressure gauge for the gas-phase space pressure being provided with the heat exchanger in test heat exchanger.
Easily, a discharging tube is also associated with the diameter reducing pipe.
Preferably, the diameter reducing pipe is connected in the steam condensate outlet by condensate outlet pipe.
In order to ensure good exhaust effect, the flow velocity of steam condensate is more than or equal to 2.0m/ in the steam condensate outlet
s。
Compared with prior art, the utility model has the advantage of：Negative pressure vapor condensation heat-exchange device in the utility model
From gas extraction system, a diameter reducing pipe and one section and heat exchanger steam side are set on the condensate outlet pipe of vapor condensation heat-exchange device
The mutual conversion of dynamic head and hydrostatic head occurs at diameter reducing pipe for the blast pipe of headroom connection, steam condensate, so that
Negative pressure is produced at undergauge, by blast pipe be connected it is automatic extract fixed gas above heat exchanger, fixed gas is by the steam that flows down at a high speed
Lime set takes system out of.The negative pressure vapor condensation heat-exchange device eliminates vavuum pump from gas extraction system, saves equipment investment, reduces
Energy consumption, save operating cost.The negative pressure vapor condensation heat-exchange device is located at outside heat exchanger from the blast pipe in gas extraction system simultaneously
Face, can install stop valve in blast pipe, easy to operation and safeguard.
Brief description of the drawings
Structural representations of the Fig. 1 for negative pressure vapor condensation heat-exchange device in the utility model embodiment from gas extraction system.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, a kind of negative pressure vapor condensation heat-exchange device in the present embodiment is from gas extraction system, including heat exchanger 1, contracting
Footpath pipe fitting 2 and blast pipe 3.
Heat exchanger 1 is then general vapor condensation heat-exchange device 1, and there is the heat exchanger 1 steam inlet 11 and steam condensate to go out
Mouthfuls 12, the pressure gauge 5 for the gas-phase space pressure being provided with heat exchanger 1 in test heat exchanger 1.Enter from steam inlet 11 and exchange heat
The steam of device 1 is condensed into steam condensate in the presence of the heat exchanger tube inside heat exchanger 1, then exports 12 rows from steam condensate
Go out.In the process, the upper space of heat exchanger 1 can gather fixed gas, in order to avoid the shadow of the efficiency of fixed gas heat exchanging device 1
Ring, these fixed gases need to discharge heat exchanger 1.
Diameter reducing pipe 2 is connected in steam condensate outlet 12 by condensate outlet pipe 7.One is also associated with diameter reducing pipe 2
Discharging tube 6, steam condensate are discharged from the discharging tube 6.
One end of blast pipe 3 is connected to the top of heat exchanger 1 to be connected with the gas-phase space in heat exchanger 1, blast pipe 3
The other end be connected with diameter reducing pipe 2.And stop valve 4 is provided with blast pipe 3 to be turned on and off blast pipe 3.
The negative pressure vapor condensation heat-exchange device is as follows from the course of work of gas extraction system：Cold material walks the tube side of heat exchanger 1, steams
Vapour enters heat exchanger 1 from steam inlet 11, steam condensate is condensed into from the discharge of steam condensate outlet 12 after participating in heat exchange, in lime set
The liquid level distance away from steam condensate sets diameter reducing pipe 2 for H position on outlet 7, and the undergauge ratio of diameter reducing pipe 2 passes through liquid
The calculation of pressure of position height H and the shell-side gas-phase space of heat exchanger 1 obtains, and the pressure of the shell-side gas-phase space of heat exchanger 1 is by pressure gauge 5
Measurement obtains.When steam condensate is flowed through at diameter reducing pipe 2, the dynamic head and hydrostatic head of diameter reducing pipe 2 are mutually changed, so that
Negative pressure is produced at diameter reducing pipe 2, and then extracts the fixed gas in heat exchanger 1 in gas-phase space, fixed gas automatically by blast pipe 3
Taken out of by the steam condensate to flow down at a high speed.To ensure fixed gas not reflux, the flow control of condensate outlet steam condensate is in 2.0m/
More than s.
In the course of the work, if fixed gas is more in system, fixed gas can be made with the stop valve 4 on normally opened blast pipe 3
Continuous discharge heat exchanger 1 certainly, keep the negative pressure or pressure-fired of system.If fixed gas is less in system, exhaust can be closed
Stop valve 4 on pipe 3, when the data of pressure gauge 5 are higher than setting value, illustrate there is fixed gas accumulation, now open stop valve 4,
Fixed gas is arranged outward, when recovering normal etc. pressure, closes stop valve 4.It can also be controlled back in pressure gauge 5 and the design of stop valve 4
Road, exhaust is set to carry out automatically.
Using 85kPaA saturated vapors as thermal source, steam flow 20t/h, the caliber that steam condensate exports 12 pipes is DN80's
Illustrated exemplified by heat exchanger 1.To maintain the negative pressure of steam side, need to set a minipump to be used to take out in the prior art
Fixed gas is taken, power steam (0.3MPaG) consumption of vavuum pump is 500kg/h.
And use the negative pressure vapor condensation heat-exchange device from gas extraction system, can below steam condensate liquid level H≤6.5m
Place sets a diameter reducing pipe 2, and diameter reducing pipe 2 circulates a diameter of DN25, and now the pressure at undergauge is≤85kPaA.Due to pressure
Power is poor, and fixed gas is extracted automatically by blast pipe 3, is discharged with lime set from outlet, can so save its power steam
500kg/h。
Claims (6)
1. a kind of negative pressure vapor condensation heat-exchange device exports (12) from gas extraction system, including with steam inlet (11) and steam condensate
Heat exchanger (1), it is characterised in that：Also include diameter reducing pipe (2) and blast pipe (3), the diameter reducing pipe (2) is connected to steam
On condensate outlet (12), one end of the blast pipe (3) be connected to the top of heat exchanger (1) with the heat exchanger (1)
Gas-phase space is connected, and the other end of the blast pipe (3) is connected with the diameter reducing pipe (2).
2. negative pressure vapor condensation heat-exchange device according to claim 1 is from gas extraction system, it is characterised in that：The blast pipe
(3) stop valve (4) of the blast pipe (3) can be turned on and off by being provided with.
3. negative pressure vapor condensation heat-exchange device according to claim 1 is from gas extraction system, it is characterised in that：The heat exchanger
(1) pressure gauge (5) for the gas-phase space pressure being provided with test heat exchanger (1).
4. negative pressure vapor condensation heat-exchange device according to claim 1 is from gas extraction system, it is characterised in that：The diameter reducing pipe
(2) discharging tube (6) is also associated with.
5. negative pressure vapor condensation heat-exchange device according to claim 1 is from gas extraction system, it is characterised in that：The diameter reducing pipe
(2) it is connected to by condensate outlet pipe (7) on the steam condensate outlet (12).
6. negative pressure vapor condensation heat-exchange device according to claim 1 is from gas extraction system, it is characterised in that：The steam condensate
The flow velocity of steam condensate is more than or equal to 2.0m/s in outlet (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720639444.9U CN206905577U (en) | 2017-06-05 | 2017-06-05 | A kind of negative pressure vapor condensation heat-exchange device is from gas extraction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720639444.9U CN206905577U (en) | 2017-06-05 | 2017-06-05 | A kind of negative pressure vapor condensation heat-exchange device is from gas extraction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206905577U true CN206905577U (en) | 2018-01-19 |
Family
ID=61287035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720639444.9U Active CN206905577U (en) | 2017-06-05 | 2017-06-05 | A kind of negative pressure vapor condensation heat-exchange device is from gas extraction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206905577U (en) |
-
2017
- 2017-06-05 CN CN201720639444.9U patent/CN206905577U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104132481B (en) | Flue gas source heat pump hot-water system and low-temperature flue gas waste heat recovery utilization method | |
| CN102519068B (en) | A kind of flue gas condensed water, waste-heat recovery device | |
| CN206905577U (en) | A kind of negative pressure vapor condensation heat-exchange device is from gas extraction system | |
| CN110425508B (en) | Pure steam generator and working method thereof | |
| CN206709639U (en) | A kind of device for strengthening steam condensation using hot capillary effect | |
| CN209188493U (en) | Wet desulfurization flue gas takes off white device | |
| CN207379320U (en) | A kind of fountain gas-water heat exchanger for generating set | |
| CN109646985A (en) | A kind of vapour-liquid condensation separator | |
| CN205679106U (en) | A kind of phase-change thermal energy recovery system | |
| CN214537452U (en) | Industrial naphthalene vaporization condensation cooler | |
| CN213160198U (en) | Eliminate desulfurization top of tower chimney structure of wet flue gas desulfurization chimney rain | |
| CN101284771B (en) | Exhaust steam trap and method of use thereof | |
| CN208520224U (en) | The indirect heat exchange vaporization type condensing system of the general vapour of concentration evaporator system end effect | |
| CN210613365U (en) | Waterproof evaporation system suitable for wet desulphurization | |
| CN209254454U (en) | A kind of drying device for blast furnace water slag-flushing humid flue gas | |
| CN106287646A (en) | Collect the device of steam in flue gas | |
| CN112274961A (en) | Automatic recovery unit of steam condensate | |
| CN209326394U (en) | Integral type frequency conversion double-effect evaporation condenser | |
| CN216777942U (en) | Cooling structure in crude benzene distillation system | |
| CN107906974B (en) | A kind of Air-Cooling Island surplus energy utility system | |
| CN110433519A (en) | A kind of return-flow system and method for distilling tower top | |
| CN2606259Y (en) | Gas condensate cold dreg/heat recovering device for circulating fluid bed boiler | |
| CN221412249U (en) | Non-condensing water collector | |
| CN204421497U (en) | Gas phase drying equipment and built-in heat-energy recovering apparatus thereof | |
| CN201032437Y (en) | Heat pipe exchanger for pyromellitic acid anhydride production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |