CN217152325U - Forced external circulation single-effect evaporator pump set mechanical seal protection device - Google Patents
Forced external circulation single-effect evaporator pump set mechanical seal protection device Download PDFInfo
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- CN217152325U CN217152325U CN202122335542.2U CN202122335542U CN217152325U CN 217152325 U CN217152325 U CN 217152325U CN 202122335542 U CN202122335542 U CN 202122335542U CN 217152325 U CN217152325 U CN 217152325U
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Abstract
The utility model relates to a forced extrinsic cycle single-effect evaporator pump unit machine seals protection device, including the pump package, the pump package pump body on be equipped with the machine and seal, be equipped with water inlet end and water outlet end on the machine and seal, the water outlet end of machine seal is connected the feed liquor end of water tank, the water inlet end of machine seal is connected the liquid outlet end of water tank, the pipeline between the liquid outlet end of water tank and the water inlet end of machine seal connects the evaporator condenser, set up main protection system between the pipeline junction position of the liquid outlet end of water tank and evaporator condenser, main protection system include from the liquid outlet end of water tank juxtapose first machine seal water circulating pump, second machine seal water circulating pump, the next position of first machine seal water circulating pump, second machine seal water circulating pump sets up first electric contact pressure gauge; a second electric contact pressure gauge is arranged between the pipeline connecting position of the evaporator condenser and the water inlet end of the mechanical seal, an electric regulating valve is arranged on the connecting pipeline of the evaporator condenser, and the evaporator condenser, the second electric contact pressure gauge and the electric regulating valve form a standby protection system.
Description
Technical Field
The utility model belongs to the technical field of the evaporimeter, a force extrinsic cycle single effect evaporimeter is related to, concretely relates to force extrinsic cycle single effect evaporimeter pump group machine to seal protection device.
Background
When the forced external circulation single-effect evaporator normally operates, the pump set mechanical seal cooling water has an important cooling effect. The cooling water for the mechanical seal of the original pump set is the self-flowing cooling water of the condenser of the evaporator, the conditions of single water source, insufficient water pressure, high temperature, poor water quality and the like exist, and the mechanical seal failure rate is high after long-term use. Therefore, how to improve the above current situation and reduce the failure rate of the mechanical seal is an urgent problem to be solved.
Disclosure of Invention
In order to solve the problem of machine seal cooling water related to the background art. The utility model provides a forced extrinsic cycle single-effect evaporator pump unit machine seals protection device ensures each machine and seals normal operating.
In order to solve the above problem, the utility model adopts the following technical scheme: a forced external circulation single-effect evaporator pump set mechanical seal protection device comprises a pump set, wherein the pump set comprises a plurality of juxtaposed pump bodies, a mechanical seal is arranged on each pump body, a water inlet end and a water outlet end are arranged on each mechanical seal, the water outlet end of each mechanical seal is connected with the liquid inlet end of a water tank, the water inlet end of each mechanical seal is connected with the liquid outlet end of the water tank, a pipeline between the liquid outlet end of the water tank and the water inlet end of each mechanical seal is connected with an evaporator condenser, a main protection system is arranged between the liquid outlet end of the water tank and the pipeline connecting position of the evaporator condenser, the main protection system comprises a first mechanical seal water circulating pump and a second mechanical seal water circulating pump which are juxtaposed from the liquid outlet end of the water tank, and a first pressure gauge is arranged at the lower position of the first mechanical seal water circulating pump and the second mechanical seal water circulating pump; a second electric contact pressure gauge is arranged between the pipeline connecting position of the evaporator condenser and the water inlet end of the mechanical seal, an electric regulating valve is arranged on the connecting pipeline of the evaporator condenser, and the evaporator condenser, the second electric contact pressure gauge and the electric regulating valve form a standby protection system.
Furthermore, a float valve is arranged on the water tank.
Still further, the first mechanical seal water circulating pump and the second mechanical seal water circulating pump are centrifugal pumps.
Still further, the pump group comprises three pump bodies which are juxtaposed.
The utility model has the advantages that: can ensure the continuous supply of the pump unit machine seal cooling water. When one of the two water pumps in the main protection system (the first mechanical seal water circulating pump and the second mechanical seal water circulating pump, and the first mechanical seal water circulating pump and the second mechanical seal water circulating pump are mutually standby pumps), the standby pump is automatically started after a first electric contact pressure gauge positioned at the outlet of the pump monitors that the water pressure is reduced; when two water pumps in the main protection system are in failure, a second electric contact pressure gauge positioned on a water sealing inlet end pipeline of the pump unit monitors that the water pressure is reduced, an electric regulating valve of the standby protection system is opened, and the other cooling medium is converged into a water sealing circulation pipeline of the pump unit, so that the normal operation of each machine seal of the pump unit is ensured.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is an overall structure diagram of the present invention;
fig. 2 is an overall circuit diagram of the present invention;
fig. 3 is a circuit diagram of a first electro-contact pressure gauge of the present invention;
FIG. 4 is a circuit diagram of a portion of the standby protection system of the present invention;
fig. 5 is a circuit diagram of a first sealing water circulation pump of the present invention;
FIG. 6 is a circuit diagram of a second mechanical seal water circulating pump of the present invention;
in the figure: an electric control valve-1; a first seal water circulating pump-2; a second machine seal water circulating pump-3; a first electro-contact pressure gauge-4; a water tank-5; a second electric contact pressure gauge-6; a pump group-7; machine sealing-8; evaporator condenser-9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A forced external circulation single-effect evaporator pump set mechanical seal protection device comprises a pump set 7, wherein the pump set 7 comprises a plurality of juxtaposed pump bodies, each pump body is provided with a mechanical seal 8, the mechanical seal 8 is provided with a water inlet end and a water outlet end, the water outlet end of the mechanical seal 8 is connected with a liquid inlet end of a water tank 5, the water inlet end of the mechanical seal 8 is connected with a liquid outlet end of the water tank 5, a pipeline between the liquid outlet end of the water tank 5 and the water inlet end of the mechanical seal 8 is connected with an evaporator condenser 9, a main protection system is arranged between the liquid outlet end of the water tank 5 and a pipeline connecting position of the evaporator condenser 9, the main protection system comprises a first mechanical seal water circulation pump 2 and a second mechanical seal water circulation pump 3 which are juxtaposed from the liquid outlet end of the water tank 5, and a first electric contact pressure gauge 4 is arranged at the lower position of the first mechanical seal water circulation pump 2 and the second mechanical seal water circulation pump 3; a second electric contact pressure gauge 6 is arranged between the pipeline connecting position of the evaporator condenser 9 and the water inlet end of the mechanical seal 8, an electric regulating valve 1 is arranged on the connecting pipeline of the evaporator condenser 9, and the evaporator condenser 9, the second electric contact pressure gauge 6 and the electric regulating valve 1 form a standby protection system.
Furthermore, a float valve is arranged on the water tank 5.
Still further, the first mechanical seal water circulating pump 2 and the second mechanical seal water circulating pump 3 are centrifugal pumps.
Still further, the pump group 7 comprises three juxtaposed pump bodies.
The utility model discloses a force outer loop single-effect evaporator pump group machine to seal protection device is equipped with into water end and play water end on every machine seals 8, and machine seals 8 end of intaking and first machine seal water circulating pump 2, the two machine seal water circulating pump delivery ports of second machine seal water circulating pump 3 and links to each other, and machine seals 8 and goes out the water end and links to each other with water tank 5, lasts the cooling of circulating, and the evaporimeter condenser 9 of reserve protection system (promptly reserve cooling water system) links to each other with the machine 8's of pump package 7 end of intaking. The water tank 5, the first mechanical seal water circulating pump 2, the second mechanical seal water circulating pump 3 and the first electric contact pressure gauge 4 form a main protection system; the evaporator condenser 9, the second electric contact pressure gauge 6 and the electric regulating valve 1 form a standby protection system. The main protection system runs uninterruptedly, cooling protection is provided for the mechanical seal 8, the first and second mechanical seal water circulating pumps 2 and 3 are controlled to be started by the pressure of the first electric contact pressure gauge 4, and the faults of the circulating pumps in use are avoided, so that the system stops running. The standby protection system controls the electric regulating valve 1 to be opened through the second electric contact pressure gauge 6, and the problem that the system cannot normally run due to faults of the main protection system is avoided.
Specifically, the utility model discloses a: the main protection system includes: based on a water tank 5 provided with a ball float valve, two centrifugal pumps (namely a first mechanical seal water circulating pump 2 and a second mechanical seal water circulating pump 3 for realizing one standby use) and a first electric contact (type) pressure gauge 4 (arranged on a main outlet pipeline of the centrifugal pumps) are arranged at the liquid outlet end of the water tank 5; the backup protection system includes: the electric control valve 1, another cooling medium pipeline (namely the connecting pipeline of the evaporator condenser 9), and a second electric contact (type) pressure gauge 6 are arranged on the water sealing inlet end pipeline of the pump unit. When the main protection system fails, the standby protection system is controlled to start through the second electric contact (type) pressure gauge 6 to ensure that each mechanical seal of the pump set operates normally.
Further explaining, the utility model discloses can ensure that pump assembly machine seals cooling water and continuously supplies with. When one of two water pumps (namely a first mechanical seal water circulating pump 2 and a second mechanical seal water circulating pump 3) in a main protection system fails, a first electric contact (type) pressure gauge 4 positioned at the outlet of the pump monitors that the water pressure is reduced, and then a standby pump is started (for example, when the first mechanical seal water circulating pump 2 fails, the second mechanical seal water circulating pump 3 is started, and when the second mechanical seal water circulating pump 3 fails, the first mechanical seal water circulating pump 2 is started); when two water pumps (namely a first machine seal water circulating pump 2 and a second machine seal water circulating pump 3) in the main protection system have faults or an electric control device has faults, a second electric contact (type) pressure gauge 6 positioned on a water seal inlet end pipeline of the pump set monitors that the water pressure is reduced, an electric regulating valve 1 of the standby protection system is opened, and the other path of cooling medium is converged into the machine seal water circulating pipeline, so that the normal operation of each machine seal of the pump set is ensured.
Referring to the attached drawings, in fig. 1, a first mechanical seal water circulating pump 2, a second mechanical seal water circulating pump 3, a first electric contact pressure gauge 4 and a water tank 5 form an executing part of a main protection system, and the working principle is as follows: tap water in the water tank 5 is supplied to a mechanical seal 8 in the pump unit 7 through the first mechanical seal water circulating pump 2 and the second mechanical seal water circulating pump 3 for cooling, and then flows back to the water tank 5 through a pipeline. Wherein, first quick-witted seal water circulating pump 2 and second machine seal water circulating pump 3 each other are the stand-by pump, realize one and use by one, after one of them pump trouble, after first electric contact pressure gauge 4 monitored water pressure and reduced, another pump started.
Referring to fig. 1 again, the electric control valve 1, the second electric contact pressure gauge 6 and the evaporator condenser 9 form an executing part of the standby protection system, and the working principle is as follows: when the first mechanical seal water circulating pump 2 and the second mechanical seal water circulating pump 3 in the main protection system stop operating due to faults, the water pressure in the pipeline is reduced, so that the low-pressure limit of the second electric contact pressure gauge 6 is triggered, then the electric regulating valve 1 is opened, the distilled condensate water in the evaporator condenser 9 is introduced into the cooling circulating pipeline, and finally flows into the water tank 5 according to the arrow direction of fig. 1.
Claims (4)
1. The utility model provides a force outer loop single-effect evaporator pump group machine to seal protection device, includes pump package (7), pump package (7) including a plurality of pump bodies that juxtapose, be equipped with on every pump body and seal (8), be equipped with into water end and play water end on machine seals (8), the play water end of machine seals (8) receives the feed liquor end of water tank (5), the end of intaking of machine seals (8) receives the play liquid end of water tank (5), connects evaporimeter condenser (9) on the pipeline between the end of intaking of the play liquid end of water tank (5) and machine seals (8), its characterized in that: a main protection system is arranged between the liquid outlet end of the water tank (5) and the pipeline connecting position of the evaporator condenser (9), the main protection system comprises a first machine seal water circulating pump (2) and a second machine seal water circulating pump (3) which are juxtaposed from the liquid outlet end of the water tank (5), and a first electric contact pressure gauge (4) is arranged at the lower positions of the first machine seal water circulating pump (2) and the second machine seal water circulating pump (3); a second electric contact pressure gauge (6) is arranged between a pipeline connecting position of the evaporator condenser (9) and a water inlet end of the mechanical seal (8), an electric regulating valve (1) is arranged on a connecting pipeline of the evaporator condenser (9), and the evaporator condenser (9), the second electric contact pressure gauge (6) and the electric regulating valve (1) form a standby protection system.
2. The forced external circulation single-effect evaporator pump set mechanical seal protection device as claimed in claim 1, wherein: the water tank (5) is provided with a ball float valve.
3. The forced external circulation single-effect evaporator pump set mechanical seal protection device as claimed in claim 1, wherein: the first mechanical seal water circulating pump (2) and the second mechanical seal water circulating pump (3) are centrifugal pumps.
4. The mechanical seal protection device for the forced external circulation single-effect evaporator pump set according to claim 1, 2 or 3, wherein: the pump group (7) comprises three juxtaposed pump bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122335542.2U CN217152325U (en) | 2021-09-26 | 2021-09-26 | Forced external circulation single-effect evaporator pump set mechanical seal protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122335542.2U CN217152325U (en) | 2021-09-26 | 2021-09-26 | Forced external circulation single-effect evaporator pump set mechanical seal protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217152325U true CN217152325U (en) | 2022-08-09 |
Family
ID=82659684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122335542.2U Active CN217152325U (en) | 2021-09-26 | 2021-09-26 | Forced external circulation single-effect evaporator pump set mechanical seal protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217152325U (en) |
-
2021
- 2021-09-26 CN CN202122335542.2U patent/CN217152325U/en active Active
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| CP01 | Change in the name or title of a patent holder |
Address after: 230000 Wushan Town, Changfeng County, Hefei City, Anhui Province Patentee after: Anhui Haoyue Environmental Technology Co.,Ltd. Address before: 230000 Wushan Town, Changfeng County, Hefei City, Anhui Province Patentee before: ANHUI HAO YUE ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |