CN215719445U - External machine of desulfurization thick liquid pump seals cooling water standby system - Google Patents
External machine of desulfurization thick liquid pump seals cooling water standby system Download PDFInfo
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- CN215719445U CN215719445U CN202122007225.8U CN202122007225U CN215719445U CN 215719445 U CN215719445 U CN 215719445U CN 202122007225 U CN202122007225 U CN 202122007225U CN 215719445 U CN215719445 U CN 215719445U
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Abstract
The utility model discloses a standby system for cooling water of a mechanical seal with an external desulfurization slurry pump, which comprises: the desulfurization component comprises a slurry circulating pump, the slurry circulating pumps are arranged in multiple layers, a speed reducer is arranged on the side wall of each slurry circulating pump, and an electric motor is arranged at the input end of each speed reducer; the process water assembly comprises a process water supply pipe, the input end of the process water supply pipe is communicated with an external water source, and the output end of the process water supply pipe is arranged on the side wall of the slurry circulating pump; the utility model realizes the mutual backup of two cooling water sources by switching between the valves without adding extra power consumption, and completely realizes the complete replacement of a process water system under the condition that the unit does not stop to reduce the load by using the original speed reducer cooling water as a backup cooling water source for mechanical sealing, thereby eliminating the 'obstacle' for the shutdown and maintenance of the process water.
Description
Technical Field
The utility model relates to the technical field of wet desulphurization, in particular to a standby system for external machine seal cooling water of a desulphurization slurry pump.
Background
In the process of reforming and putting into operation thermal power unit environmental protection equipment, most of desulfurization systems adopt a limestone wet desulfurization technology, a high-power slurry circulating pump is adopted in the equipment model selection process, the equipment is arranged in a multilayer manner and is used as important environmental protection auxiliary equipment of a thermal power plant, the desulfurization slurry circulating pump is completely stopped to trigger one of input conditions of boiler MFT (main fuel trip), and therefore the importance of the desulfurization slurry circulating pump as the auxiliary equipment is seen.
The existing slurry circulating pump mostly adopts an external cooling type mechanical seal, cooling water generally adopts desulfurization process water, the process water has more users and single water source, if the process water system breaks down and breaks down, the supply of the cooling water for the slurry circulating pump machine seal is threatened, and then the tripping of a boiler MFT protection unit and the disconnection of a power grid are easily triggered.
Therefore, a standby system of the cooling water of the external machine seal of the desulfurization slurry pump is provided to solve the problem.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
The utility model has been made in view of the above and/or other problems with existing external machine seal cooling water backup systems for desizing pumps.
Therefore, the problem to be solved by the utility model is that the machine seal cooling water source of the existing desulfurization slurry circulating pump is single, if the process water system breaks down and is cut off, the machine seal cooling water supply of the slurry circulating pump is threatened, and further, the boiler MFT protection unit is easily triggered to trip the power grid to be disconnected.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an external machine of desulfurization thick liquid pump seals cooling water standby system, this standby system includes: the desulfurization assembly comprises slurry circulating pumps which are arranged in a multi-layer manner, a speed reducer is arranged on the side wall of each slurry circulating pump, and an electric motor is arranged at the input end of the speed reducer; the process water assembly comprises a process water supply pipe, the input end of the process water supply pipe is communicated with an external water source, and the output end of the process water supply pipe is arranged on the side wall of the slurry circulating pump; the cooling water assembly comprises an auxiliary machine cooling water supply pipe and an auxiliary machine cooling water return pipe, wherein the auxiliary machine cooling water supply pipe and the auxiliary machine cooling water return pipe are communicated with the speed reducer and are arranged on the outer side wall of the speed reducer, and the auxiliary machine cooling water supply pipe is connected with the process water supply pipe through a conversion structure.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: and the side wall of the slurry circulating pump is provided with a mechanical seal communicated with a process water supply pipe, and the side wall of the slurry circulating pump is provided with a machine seal cooling water drain pipe for draining water.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: the side wall of the process water supply pipe is provided with a three-way valve, and the process water supply pipes on two sides of the three-way valve are respectively provided with a first electromagnetic valve and a second electromagnetic valve.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: the process water supply pipe is detachably connected with the three-way valve.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: the side wall of the three-way valve is provided with a threaded seat, and the side wall of the process water supply pipe is provided with threads connected with the threaded seat.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: and a first valve and a second valve are respectively arranged on the auxiliary machine cooling water supply pipe and the auxiliary machine cooling water return pipe.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: and a water guide pipe communicated with each other is arranged between the auxiliary machine cooling water supply pipe and the three-way valve, and a third electromagnetic valve for controlling the water quantity is arranged on the side wall of the water guide pipe.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: and a first pressure gauge and a second pressure gauge for measuring water pressure are respectively arranged on the side walls of the auxiliary machine cooling water supply pipe and the auxiliary machine cooling water return pipe.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: and a third pressure gauge and a fourth pressure gauge for measuring water pressure are respectively arranged on the process water supply pipe and the side wall of the water guide pipe on the two sides of the three-way valve.
As a preferred scheme of the cooling water standby system of the external machine seal of the desulfurization slurry pump, the system comprises the following components: and a first thermometer and a second thermometer for measuring water temperature are respectively arranged on the side walls of the auxiliary machine cooling water supply pipe and the auxiliary machine cooling water return pipe.
The utility model has the beneficial effects that: the two cooling water sources are mutually prepared by switching the valves without increasing extra power consumption, the original speed reducer cooling water is used as a standby cooling water source for mechanical sealing, the process water system is completely replaced under the condition that the unit is not stopped to reduce the load, and the obstacle is eliminated for the shutdown and overhaul of the process water.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a system configuration diagram of a cooling water standby system of a desulfurization slurry pump external machine seal.
FIG. 2 is a structural view of a process water supply pipe of a machine-sealed cooling water standby system with an external desulfurization slurry pump.
FIG. 3 is a three-way valve structure diagram of a cooling water standby system of a desulfurization slurry pump external machine seal.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 3, a first embodiment of the present invention provides a standby system for cooling water of a mechanical seal with an external desulfurization slurry pump, including: the desulfurization component 100 comprises a slurry circulating pump 101, the slurry circulating pump 101 is arranged in multiple layers, a speed reducer 102 is arranged on the side wall of the slurry circulating pump 101, and an electric motor 103 is arranged at the input end of the speed reducer 102; the process water assembly 200 comprises a process water supply pipe 201, wherein the input end of the process water supply pipe 201 is communicated with an external water source, and the output end of the process water supply pipe 201 is arranged on the side wall of the slurry circulating pump 101; the cooling water assembly 300 comprises an auxiliary machine cooling water supply pipe 301 and an auxiliary machine cooling water return pipe 302, wherein the auxiliary machine cooling water supply pipe 301 and the auxiliary machine cooling water return pipe 302 are both communicated with the speed reducer 102 and are arranged on the outer side wall of the speed reducer 102, and the auxiliary machine cooling water supply pipe 301 is connected with the process water supply pipe 201 through a conversion structure.
Preferably, a mechanical seal 104 communicating with the process water supply pipe 201 is provided on a side wall of the slurry circulation pump 101, and a machine seal cooling water drain pipe 105 for draining water is provided on a side wall of the slurry circulation pump 101.
Preferably, a three-way valve 400 is disposed on a side wall of the process water supply pipe 201, a first electromagnetic valve 500 and a second electromagnetic valve 600 are respectively disposed on the process water supply pipe 201 on two sides of the three-way valve 400, the process water supply pipe 201 and the three-way valve 400 are detachably connected, a threaded seat 401 is disposed on a side wall of the three-way valve 400, and threads connected with the threaded seat 401 are disposed on a side wall of the process water supply pipe 201.
When the slurry circulating pump 101 is in normal operation, the process water supply pipe 201 enters the mechanical seal 104 through the first electromagnetic valve 500, the three-way valve 400 and the second electromagnetic valve 600 to cool the slurry circulating pump, and the cooled water is discharged into the trench from the cooling water discharge pipe 105 at the sealing position.
Example 2
Referring to fig. 1 to 3, a second embodiment of the present invention is based on the above embodiment.
The auxiliary cooling water supply pipe 301 and the auxiliary cooling water return pipe 302 are provided with a first valve 303 and a second valve 304, respectively.
Preferably, a water conduit 700 communicating with each other is provided between the auxiliary cooling water supply pipe 301 and the three-way valve 400, and a third electromagnetic valve 701 for controlling the amount of water is provided on a side wall of the water conduit 700.
Preferably, a first pressure gauge 305 and a second pressure gauge 306 for measuring water pressure are respectively disposed on the side walls of the auxiliary cooling water supply pipe 301 and the auxiliary cooling water return pipe 302, and a third pressure gauge 800 and a fourth pressure gauge 900 for measuring water pressure are respectively disposed on the side walls of the process water supply pipe 201 and the water conduit 700 on both sides of the three-way valve 400.
When the speed reducer 102 is in normal operation, the auxiliary cooling water supply pipe 301 enters the speed reducer 102 through the first valve 303 to cool the speed reducer and then enters the auxiliary cooling water return pipe 302 through the second valve 304;
when the process water system needs to be overhauled or has a fault and stops water supply, closing the first electromagnetic valve 500, switching the three-way valve 400 to the side of the auxiliary machine water, opening the third electromagnetic valve 701, observing the rising of the numerical value of the fourth pressure gauge 900, and basically consistent with the numerical value of the third pressure gauge 800, wherein at the moment, the auxiliary machine cooling water supply pipe 301 enters the mechanical seal 104 through the third electromagnetic valve 800, the three-way valve 400 and the second electromagnetic valve 600 to cool the mechanical seal, and the cooled water is discharged into a trench from the machine seal cooling water discharge pipe 105;
when the process water system is repaired, the original cooling mode needs to be recovered, the third electromagnetic valve 800 is closed, the three-way valve 400 is switched to one side of the process water, the first electromagnetic valve 500 is opened, the numerical value of the fourth pressure gauge 900 is observed to be reduced, the numerical value of the third pressure gauge 800 is increased, at the moment, the process water supply pipe 201 enters the mechanical seal 104 through the first electromagnetic valve 500, the three-way valve 400 and the second electromagnetic valve 600 to be cooled, and the cooled water is discharged into the trench from the seal cooling water discharge pipe 105.
Example 3
Referring to FIGS. 1-3, a third embodiment of the present invention is based on the first two embodiments.
Specifically, the side walls of the auxiliary cooling water supply pipe 301 and the auxiliary cooling water return pipe 302 are provided with a first temperature gauge 307 and a second temperature gauge 308 for measuring the water temperature, respectively.
When the cooling water pump is used, cooling water is monitored through the first pressure gauge 305, the third pressure gauge 800, the fourth pressure gauge 900, the first temperature gauge 307 and the second temperature gauge 308, the water supply pressure of the mechanical seal 104 is adjusted through the third electromagnetic valve 701, and the flow and the pressure of the cooling water required by the mechanical seal 104 are guaranteed;
in normal operation, in order to prevent leakage of different water qualities between the process water and the auxiliary cooling water, the third solenoid valve 701 and the three-way valve 400 may be judged to have an inner leakage phenomenon by monitoring the value of the fourth pressure gauge 900.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an external machine of desulfurization thick liquid pump seals cooling water standby system which characterized in that: the method comprises the following steps:
the desulfurization assembly (100) comprises slurry circulating pumps (101), the slurry circulating pumps (101) are arranged in a multi-layer mode, speed reducers (102) are arranged on the side walls of the slurry circulating pumps (101), and the input ends of the speed reducers (102) are provided with motors (103);
the process water assembly (200) comprises a process water supply pipe (201), the input end of the process water supply pipe (201) is communicated with an external water source, and the output end of the process water supply pipe (201) is arranged on the side wall of the slurry circulating pump (101);
cooling water subassembly (300), including auxiliary engine cooling water delivery pipe (301) and auxiliary engine cooling water return pipe (302), auxiliary engine cooling water delivery pipe (301) and auxiliary engine cooling water return pipe (302) all are linked together with speed reducer (102) and set up in on the lateral wall of speed reducer (102), auxiliary engine cooling water delivery pipe (301) are connected with technology water delivery pipe (201) through transform structure.
2. The system of claim 1, wherein the system comprises: the side wall of the slurry circulating pump (101) is provided with a mechanical seal (104) communicated with a process water supply pipe (201), and the side wall of the slurry circulating pump (101) is provided with a machine seal cooling water drain pipe (105) for draining water.
3. The system of claim 2, wherein the cooling water backup system is a desulfurization slurry pump external machine seal cooling water system, and comprises: the side wall of the process water supply pipe (201) is provided with a three-way valve (400), and the process water supply pipe (201) on two sides of the three-way valve (400) is respectively provided with a first electromagnetic valve (500) and a second electromagnetic valve (600).
4. The system of claim 3, wherein the cooling water backup system comprises: the process water supply pipe (201) is detachably connected with the three-way valve (400).
5. The system of claim 4, wherein the cooling water backup system comprises: the side wall of the three-way valve (400) is provided with a threaded seat (401), and the side wall of the process water supply pipe (201) is provided with threads connected with the threaded seat (401).
6. The system for standby cooling water for the external machine seal of the desulfurization slurry pump as claimed in any one of claims 1 to 5, characterized in that: and a first valve (303) and a second valve (304) are respectively arranged on the auxiliary machine cooling water supply pipe (301) and the auxiliary machine cooling water return pipe (302).
7. The system of claim 5, wherein the cooling water backup system comprises: a water guide pipe (700) communicated with each other is arranged between the auxiliary machine cooling water supply pipe (301) and the three-way valve (400), and a third electromagnetic valve (701) for controlling the water quantity is arranged on the side wall of the water guide pipe (700).
8. The system of claim 7, wherein the cooling water backup system comprises: and a first pressure gauge (305) and a second pressure gauge (306) for measuring water pressure are respectively arranged on the side walls of the auxiliary machine cooling water supply pipe (301) and the auxiliary machine cooling water return pipe (302).
9. The system for standby cooling water for external machine seal of desulfurization slurry pump of claim 7 or 8, characterized in that: and a third pressure gauge (800) and a fourth pressure gauge (900) for measuring water pressure are respectively arranged on the side walls of the process water supply pipe (201) and the water guide pipe (700) on the two sides of the three-way valve (400).
10. The system of claim 9, wherein the cooling water backup system comprises: and a first thermometer (307) and a second thermometer (308) for measuring the water temperature are respectively arranged on the side walls of the auxiliary machine cooling water supply pipe (301) and the auxiliary machine cooling water return pipe (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122007225.8U CN215719445U (en) | 2021-08-25 | 2021-08-25 | External machine of desulfurization thick liquid pump seals cooling water standby system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122007225.8U CN215719445U (en) | 2021-08-25 | 2021-08-25 | External machine of desulfurization thick liquid pump seals cooling water standby system |
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| CN215719445U true CN215719445U (en) | 2022-02-01 |
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| CN202122007225.8U Active CN215719445U (en) | 2021-08-25 | 2021-08-25 | External machine of desulfurization thick liquid pump seals cooling water standby system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934913A (en) * | 2022-06-08 | 2022-08-23 | 山东钢铁集团永锋临港有限公司 | Control method for ensuring stability of mechanical seal cooling water of water pump |
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2021
- 2021-08-25 CN CN202122007225.8U patent/CN215719445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934913A (en) * | 2022-06-08 | 2022-08-23 | 山东钢铁集团永锋临港有限公司 | Control method for ensuring stability of mechanical seal cooling water of water pump |
| CN114934913B (en) * | 2022-06-08 | 2024-02-23 | 山东钢铁集团永锋临港有限公司 | Control method for ensuring stability of mechanical seal cooling water of water pump |
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