CN208950952U - The sealing system of condensate pump - Google Patents
The sealing system of condensate pump Download PDFInfo
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- CN208950952U CN208950952U CN201821692241.7U CN201821692241U CN208950952U CN 208950952 U CN208950952 U CN 208950952U CN 201821692241 U CN201821692241 U CN 201821692241U CN 208950952 U CN208950952 U CN 208950952U
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- condensate pump
- sealing
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- condensate
- pump
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Abstract
The utility model relates to a kind of sealing systems of condensate pump.The sealing system of condensate pump described in the utility model includes vacuum pump, condenser, condensate pump, mechanical sealing member, the vacuum pump is connected to condenser, the condenser is connected to condensate pump, the mechanical sealing member is mounted on condensate pump, it further include sealing condensate pipe, evacuated tube, the water outlet of the condensate pump connects at sealing condensate pipe to mechanical sealing member, and the water chamber of the condensate pump is connected to by evacuated tube with condenser.The sealing system of condensate pump described in the utility model has the advantages that the leakproofness of condensate pump is higher.
Description
Technical field
The utility model relates to Thermal Power Station's engineering equipment fields, more particularly to a kind of sealing system of condensate pump
System.
Background technique
Condensate pump is the Important Auxiliary equipment in modern thermal power power plant, and effect is to export coagulating in turbine condenser hot well
It bears water.Due under generating set operating status in condenser be high vacuum, generally in -88~-97Kpa, condensed water pumping
The water of suction is also negative pressure, and the necessary good seal of condensate pump entrance pipe keeps height negative pressure, just can guarantee that condensate pump is reliable
Water suction and normal work.
In order to guarantee the leakproofness of condensate pump pump rotary shaft and pump chamber shell, it will usually in condensate pump pump housing sound portion
Installation mechanical sealing member is divided to be sealed.But if the sound part sealing of mechanical sealing member is bad, in condensate pump
During operation, air can leak into the pump housing from mechanical sealing member.When the air leak into the pump housing reaches a certain amount of, condensed water
Pump can not show water, cause condensate pump work not normal.In addition, if incondensable gas cannot be discharged from the pump housing in time,
Pump can be easy to cause not show water and shut down.
Therefore, the leakproofness of condensate pump still needs to further increase.
Utility model content
Based on this, the purpose of the utility model is to provide a kind of sealing systems of condensate pump, with condensate pump
The higher advantage of leakproofness.
A kind of sealing system of condensate pump includes vacuum pump, condenser, condensate pump, mechanical sealing member, the vacuum
Pump is connected to condenser, and it further includes close that the condenser is connected to condensate pump, and the mechanical sealing member is mounted on condensate pump
Envelope condensate pipe, evacuated tube, the water outlet of the condensate pump connect at sealing condensate pipe to mechanical sealing member, described solidifying
The water chamber for bearing water pump is connected to by evacuated tube with condenser.
Compared with the existing technology, the sealing system of condensate pump described in the utility model by sealing with condensate pipe come
The water outlet of the part of condensate pump is led into mechanical sealing member, using condensate pump water outlet to mechanical sealing member carry out it is cooling and
The sound part of water seal mechanical sealing member is effectively prevented air and leaks into condensate pump along the gap of mechanical sealing member.Meanwhile
Evacuated tube is connected to condenser, and condenser vacuum is higher, and condensate pump is run under negative pressure, as operation in pump room leakage have air or
Air or incondensable gas can be evacuated to condenser using evacuated tube by incondensable gas, then again vacuum pump by the air in condenser
Or incondensable gas is evacuated to external environment, helps to ensure that the normal work of condensate pump.
It further, further include evacuating tracheae, the water inlet of the condensate pump is connected to by evacuating tracheae with condenser.
Equipped with tracheae is evacuated on the inlet duct of condensate pump, evacuating tracheae can incondensable gas in draw-off pump inlet duct and leakage
Enter air, facilitates the normal work for further guaranteeing condensate pump.
Further, the water chamber of the condensate pump runs in blank pipe to evacuating tracheae.Improvement cost is reduced, reduction system is whole
Body structure.
Further, the first valve is housed on the evacuation tracheae, the second valve is housed in the evacuated tube.When spare
When condensate pump overhauls in unit operation, the first valve, the second valve are closed, spare condensate pump is isolated, effectively prevents
Only air leaks into and influences running condensate pump when the maintenance of spare condensate pump.
It further, further include the first sealing valve, the second sealing valve, the condenser successively passes through the first sealing valve,
Two sealing valves are connected to condensate pump, and the leakproofness of first sealing valve is better than the second sealing valve, second sealing valve
Closing velocity is greater than the closing velocity of the first sealing valve.Condensate pump inlet can both be helped avoid with quick closedown in spy
Fault spread under different situation, and can guarantee the tightness that water route is closed, effectively guarantee the safe operation of generating set.This
Outside, the first sealing valve of better tightness is arranged on the outside, it is ensured that the tightness that water route is closed, then the second sealing valve is done into one
The sealing of step ground further assures that the tightness that water route is closed.Also, the second sealing valve, can be quick closer to condensate pump
Water route is closed, guarantees the negative pressure in condensate pump.
Further, first sealing valve is electric gate valve, and second sealing valve is electric butterfly valve.Electric gate valve
The speed of good airproof performance, the opened/closed of electric butterfly valve is fast.
It further, further include the control device being electrically connected with condensate pump, the control device is sealed with first respectively
Valve, the electrical connection of the second sealing valve, when the condensate pump is closed, the control device controls the first sealing valve, the second sealing
Valve is closed.For control device when receiving condensate pump fault tripping signal, it is complete that control device controls electric gate valve, electric butterfly valve
Portion closes, not only can be with quick closedown water route, but also may insure the tightness that water route is closed, and effectively ensures that the safety of generating set
Operation.
Further, strainer is provided between second sealing valve and condensate pump.Strainer filtering enters condensate pump
Water.
It further, further include condensed water water outlet son pipe, the water outlet of the condensate pump connects condensed water water outlet son pipe,
The condensed water, which is discharged on sub- pipe, is equipped with third sealing valve, and the 4th sealing valve is housed on the sealing condensate pipe.When spare
Condensate pump unit operation in overhaul when, close third sealing valve, the 4th sealing valve, spare condensate pump is isolated, has
Air, which is leak into, when preventing spare condensate pump from overhauling to effect influences running condensate pump.
In order to better understand and implement, according to the present invention will be described in detail below with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the sealing system of the condensate pump of the utility model；
Fig. 2 is the automatically controlled schematic diagram of the sealing system of the condensate pump of the utility model；
Appended drawing reference:
10, vacuum pump；11, condenser；12, strainer；13, condensate pump；14, control device；20, condensed water water inlet is female
Pipe；21, condensed water water inlet pipe；22, condensed water main water outlet pipe；23, condensed water water outlet pipe；24, condensate pipe is used in sealing；
25, tracheae is evacuated；26, evacuated tube；30, the first sealing valve；31, the second sealing valve；32, third sealing valve；33, the 4th sealing
Valve；34, the first valve；35, the second valve.
Specific embodiment
A kind of sealing system of condensate pump 13, referring to Fig. 1, including vacuum pump 10, condenser 11, condensed water water inlet main pipe
20, the sub- pipe 21 of condensed water water inlet, the first sealing valve 30, the second sealing valve 31, strainer 12, condensate pump 13, condensed water water outlet
Pipe 23, condensed water main water outlet pipe 22, third sealing valve 32, mechanical sealing member (not shown), sealing are close with condensate pipe the 24, the 4th
Seal valve 33, control device 14.The air inlet of vacuum pump 10 is connected to the gas outlet of condenser 11, and vacuum pump 10 extracts condenser 11
Interior gas is so that condenser 11 is in vacuum state.The water outlet of condenser 11 accesses the water inlet of condensed water water inlet main pipe 20
Mouthful, the water outlet of condensed water water inlet main pipe 20 is respectively connected to two condensed waters and intakes the water inlet of sub- pipe 21；Then, each condensation
The intake water outlet of sub- pipe 21 of water is sequentially connected in series the first sealing valve 30, the second sealing valve 31, strainer 12, condensate pump 13；Most
Afterwards, the water outlet of each condensate pump 13 accesses the water inlet that a condensed water is discharged sub- pipe 23, and two condensed waters are discharged sub- pipe 23
Water outlet be incorporated to condensed water main water outlet pipe 22 again, and be discharged on sub- pipe 23 in each condensed water and be mounted on third sealing
Valve 32.Wherein, a mechanical sealing member is mounted on each condensate pump 13, and in condensate pump 13 and third sealing valve
Between 32, sub- pipe 23 is discharged from condensed water and is connect at a sealing condensate pipe 24 to the mechanical sealing member on same branch road,
Each sealing is with being mounted on the 4th sealing valve 33 on condensate pipe 24.Control device 14 respectively with the first sealing valve 30, second
Sealing valve 31, condensate pump 13 are electrically connected.
Specifically, the leakproofness of the first sealing valve 30 is better than the second sealing valve 31, and the closing velocity of the second sealing valve 31 is big
In the closing velocity of the first sealing valve 30, in the present embodiment, the first sealing valve 30 is electric gate valve, and the second sealing valve 31 is electricity
Dynamic butterfly valve.More specifically, control device 14 is unit DCS control system, electric gate valve and electric butterfly valve with control device 14
Electrical connection, can achieve the purpose remotely controlled.Condensate pump 13, electric gate valve, electric butterfly valve are respectively provided with interlock logic, control
When receiving 13 fault tripping signal of condensate pump, control device 14 controls electric gate valve, electric butterfly valve and all closes device 14
It closes, can reach close quick and strict purpose in this way, guarantee the safe operation of generating set.
In addition, the sealing system of this condensate pump 13 further includes evacuating tracheae 25, evacuated tube 26, the first valve referring to Fig. 1
34, the second valve 35.On each road Shui Zhi, an evacuation tracheae 25 is connect to condenser 11, the pumping from the sub- pipe 21 of condensed water water inlet
Air hose 25 is arranged in the water inlet conduit between the second sealing valve 31 and condensate pump 13 to extract condensate pump 13 not
Noncondensing gas and leak into air.Also, the setting of the first valve 34 is on evacuating tracheae 25.Meanwhile the water chamber of condensate pump 13 connects
Evacuated tube 26 is arranged in evacuated tube 26 to tracheae 25, the second valve 35 is evacuated, wherein the gas outlet access first of evacuated tube 26
The air inlet of valve 34.
The course of work: when normal work, the first sealing valve 30, the second sealing valve 31 is opened, the condensed water of condenser 11 is made
It send to condensate pump 13, and opens third sealing valve 32, condensate pump 13 sends out condensed water for other systems use, together
When also open the 4th sealing valve 33, partial coagulation water is sent to mechanical seal, condensed water forms water seal at mechanical seal.Separately
Outside, the first valve 34, the second valve 35 are also opened, incondensable gas in the water inlet conduit of condensate pump 13 leaks into air
And condensate pump 13 the indoor incondensable gas of water, leak into air and flow to coagulator, vacuum pump 10 is again by non-condensing gas
Body leaks into air submitting external environment.
Compared with the existing technology, the sealing system of condensate pump 13 described in the utility model going out using condensate pump 13
Water carries out cooling and water seal mechanical sealing member sound part to mechanical sealing member, is effectively prevented air along mechanical sealing member
Gap leak into condensate pump 13.Also using evacuating, tracheae 25, evacuated tube 26 will leak into air, incondensable gas is evacuated to condensing
Device 11 guarantees the normal work of condensate pump 13.In addition, closing first when needing to overhaul a certain condensate pump 13
Sealing valve 30, the second sealing valve 31, third sealing valve 32,33 first valve 34 of the 4th sealing valve, the second valve 35, effectively prevent
Reduce influence of the service work to power-plant operation.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.
Claims (9)
1. a kind of sealing system of condensate pump (13), including vacuum pump (10), condenser (11), condensate pump (13), machinery
Sealing element, the vacuum pump (10) are connected to condenser (11), and the condenser (11) is connected to condensate pump (13), the machine
Tool sealing element is mounted on condensate pump (13), it is characterised in that: further includes sealing condensate pipe (24), evacuated tube (26), institute
The water outlet for stating condensate pump (13) connects at sealing condensate pipe (24) to mechanical sealing member, the water of the condensate pump (13)
Room is connected to by evacuated tube (26) with condenser (11).
2. the sealing system of condensate pump (13) according to claim 1, it is characterised in that: further include evacuating tracheae
(25), the water inlet of the condensate pump (13) is connected to by evacuating tracheae (25) with condenser (11).
3. the sealing system of condensate pump (13) according to claim 2, it is characterised in that: the condensate pump (13)
Water chamber run in blank pipe (26) to evacuate tracheae (25).
4. the sealing system of condensate pump (13) according to claim 3, it is characterised in that: on the evacuation tracheae (25)
Equipped with the first valve (34), the second valve (35) are housed on the evacuated tube (26).
5. the sealing system of condensate pump (13) according to claim 1, it is characterised in that: further include the first sealing valve
(30), the second sealing valve (31), the condenser (11) are successively connected to by the first sealing valve (30), the second sealing valve (31)
The leakproofness of condensate pump (13), first sealing valve (30) is better than the second sealing valve (31), second sealing valve (31)
Closing velocity be greater than the first sealing valve (30) closing velocity.
6. the sealing system of condensate pump (13) according to claim 5, it is characterised in that: first sealing valve (30)
For electric gate valve, second sealing valve (31) is electric butterfly valve.
7. the sealing system of condensate pump (13) according to claim 6, it is characterised in that: further include and condensate pump
(13) be electrically connected control device (14), the control device (14) respectively with the first sealing valve (30), the second sealing valve (31)
Electrical connection, when the condensate pump (13) are closed, the control device (14) controls the first sealing valve (30), the second sealing valve
(31) it closes.
8. the sealing system of condensate pump (13) according to claim 7, it is characterised in that: second sealing valve (31)
Strainer (12) are provided between condensate pump (13).
9. the sealing system of condensate pump (13) according to claim 1, it is characterised in that: further include condensed water water outlet
It manages (23), the water outlet of the condensate pump (13) connects condensed water water outlet son pipe (23), the condensed water water outlet son pipe (23)
Upper that third sealing valve (32) are housed, the sealing, which is used, is equipped with the 4th sealing valve (33) on condensate pipe (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821692241.7U CN208950952U (en) | 2018-10-18 | 2018-10-18 | The sealing system of condensate pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821692241.7U CN208950952U (en) | 2018-10-18 | 2018-10-18 | The sealing system of condensate pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208950952U true CN208950952U (en) | 2019-06-07 |
Family
ID=66742019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821692241.7U Active CN208950952U (en) | 2018-10-18 | 2018-10-18 | The sealing system of condensate pump |
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| Country | Link |
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| CN (1) | CN208950952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332162A (en) * | 2019-08-13 | 2019-10-15 | 深圳市恩莱吉能源科技有限公司 | It is a kind of with anaerobic water be operate medium hydraulic turbine blades adjuster |
-
2018
- 2018-10-18 CN CN201821692241.7U patent/CN208950952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332162A (en) * | 2019-08-13 | 2019-10-15 | 深圳市恩莱吉能源科技有限公司 | It is a kind of with anaerobic water be operate medium hydraulic turbine blades adjuster |
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