CN202597258U - Pump cover for boric acid recirculation pump - Google Patents
Pump cover for boric acid recirculation pump Download PDFInfo
- Publication number
- CN202597258U CN202597258U CN 201220118853 CN201220118853U CN202597258U CN 202597258 U CN202597258 U CN 202597258U CN 201220118853 CN201220118853 CN 201220118853 CN 201220118853 U CN201220118853 U CN 201220118853U CN 202597258 U CN202597258 U CN 202597258U
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- CN
- China
- Prior art keywords
- pump
- pump cover
- boric acid
- hole
- face
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a pump cover for a boric acid recirculation pump. A first end face and a second end face are respectively positioned at two axial ends of the pump cover, an axial through hole axially penetrating through the pump cover is formed in the center of the pump cover, the pump cover is also provided with a cooling through hole, the first end of the cooling through hole is positioned on the first end face, and the second end of the cooling through hole is positioned on the wall of the axial through hole. The pump cover has the advantages that water in a pumping chamber is introduced into a mechanical seal chamber through the cooling through hole in the pump cover to flush a mechanical seal, so that the temperature of the seal end face of the mechanical seal is reduced. Meanwhile, the seal end face exchanges heat with a concentrated boric acid solution delivered by the boric acid recirculation pump, so that the concentrated boric acid solution is prevented from being crystallized in the boric acid recirculation pump.
Description
Technical field
The utility model relates to a kind of pump cover that is used for the boric acid recirculating pump in nuclear power equipment field.
Background technique
The boric acid recirculating pump is a kind of recirculating pump that often uses in the nuclear power station; The effect of boric acid recirculating pump is: at the nuclear power station run duration; For preventing that boric acid from injecting the boric acid crystallization in the case; By the boric acid recirculating pump BAS that boric acid injects in the case is continuously circulated, guarantee BAS concentration and temperature constant.The another one effect of this pump is to accomplish the first topping up that boric acid injects case.
On the boric acid recirculating pump; The mechanical seal of said pump cover and said boric acid recirculating pump all is socketed on the pump shaft of said boric acid recirculating pump; The pumping chamber end face of said pump cover is towards pumping chamber; The mechanical seal end surface of said pump cover is towards the mechanical seal chamber of said boric acid recirculating pump, and said mechanical seal chamber is surrounded by said pump cover and said mechanical seal.In recycle pump, the seal face frictional heat of said mechanical seal must cool off at said boric acid.On the one hand, the BAS that the boric acid recirculating pump is transmitted is a high-temp liquid in addition, and its temperature is more than 80 ℃.If in the process of boric acid recirculating pump operation, the housing of pumping chamber and pump cover produce uneven expansion, will jeopardize the safe operation of said boric acid recirculating pump equally.
The model utility content
The purpose of the utility model is in order to overcome the deficiency of existing technology, a kind of cover that is used for recirculating pump to be provided, the technical problem that its mechanical seal end surface that can solve recirculating pump inside can't cool off.
A kind of technological scheme that realizes above-mentioned purpose is: a kind of pump cover that is used for the boric acid recirculating pump; The axial two ends of said pump cover are respectively first end face and second end face; The center of said pump cover is provided with the axial hole that axially runs through said pump cover; Also have the cooling through hole on the said pump cover, the first end of said cooling through hole is positioned on said first end face, and the second end of said cooling through hole is positioned on the hole wall of said axial hole.
Further, the level height of said cooling through hole first end is higher than the level height of said cooling through hole the second end.
Further, on second end face of said pump cover, the circumference that centers on said pump cover is provided with some axial bolts through holes.
Adopted a kind of technological scheme that is used for the pump cover of boric acid recirculating pump of the utility model, the technological scheme of cooling through hole promptly has been set on said pump cover.Its technique effect is: through the cooling through hole is set, the water in the said pumping chamber is introduced said mechanical seal chamber on said pump cover, wash said mechanical seal, reduce the temperature of seal face in the said mechanical seal.Simultaneously, produce heat exchange between the boric acid concentrated solution of said seal face and the transmission of said boric acid recirculating pump, prevent that said boric acid concentrated solution is at said boric acid recirculating pump intercrystalline.
Description of drawings
Fig. 1 is a kind of structural representation that is used for the pump cover of recirculating pump of the utility model.
Fig. 2 is a kind of scheme of installation that is used for the pump cover of recirculating pump of the utility model.
Embodiment
See also Fig. 1 and Fig. 2,, pass through embodiment particularly below, and combine accompanying drawing at length to explain in order to understand the technological scheme of the utility model better:
See also Fig. 1, a kind of pump cover that is used for the boric acid recirculating pump of the utility model, the two ends of said pump cover 1 are respectively first end face 11 and second end face 12, the center of said pump cover is provided with the axial hole 13 that axially runs through said pump cover 1.Said pump cover 1 is socketed on the pump shaft of said boric acid recirculating pump through said axial hole 13: also have cooling through hole 14 on the said pump cover 1; The first end of said cooling through hole 14 is positioned on the said pumping chamber end face 11, and the second end of said cooling through hole 14 is positioned on the hole wall of said axial hole 13.
See also Fig. 2, a kind of pump cover 1 that is used for the boric acid recirculating pump of the utility model, said pump cover 1 all is socketed on the pump shaft 3 of said boric acid recirculating pump with the mechanical seal 2 of said boric acid recirculating pump.First end face of said pump cover 1 is towards pumping chamber 4; Second end face of said pump cover 1 is towards the mechanical seal chamber 5 of said boric acid recirculating pump; Said pump cover 1 is exactly described mechanical seal chamber 5 with the chamber that said mechanical seal 2 is surrounded, and through cooling through hole 14 is set on said pump cover 1, the water in the said pumping chamber 4 is introduced said mechanical seal chamber 5; Wash said mechanical seal 2, reduce the temperature of seal face in the said mechanical seal.
Said cooling through hole 14 is arranged at the top of said end cap 1; Must make the level height of said cooling through hole 14 first ends be higher than the level height of said cooling through hole 14 the second ends like this, the purpose that is provided with like this is to help the air emptying with in the said mechanical seal chamber 5.
On first end face 11 of said pump cover, around said axial hole 13, some bolt blind holes 15 are set, on second end face 12 of said pump cover, the circumference that centers on said pump cover 1 is provided with some axial bolts through holes 16.Through the bolt on said bolt hole 16 and the said bolt blind hole 15 is set, said pump cover 1 is fixed on the housing of said pumping chamber 4.
The purpose of design is like this: guarantee in said boric acid recirculating pump running; The conformity that the housing of said pump cover 1, said pumping chamber 4 expands; Prevent at said boric acid recirculating pump when the transmission temperature surpasses 80 ℃ BAS; Because the housing of said pump cover 1 and said pumping chamber 4 expands when inconsistent, the pumping chamber 4 of said boric acid recirculating pump leaks, thereby influences the safe operation of said boric acid recirculating pump.
In addition, also be provided with the hinge last 17 of a corral on second end face 12 of said pump cover, through being arranged at the latch on the said hinge last 17, the air cooling bearing fixing on said pump cover 1 and the said boric acid recirculating pump around said pump cover circumference.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not with the qualification of doing the utility model; As long as in the connotation scope of the utility model, all will drop in claims scope of the utility model the above embodiment's variation, modification.
Claims (3)
1. pump cover that is used for the boric acid recirculating pump; The axial two ends of said pump cover (1) are respectively first end face (11) and second end face (12); The center of said pump cover is provided with the axial hole (13) that axially runs through said pump cover (1); It is characterized in that: also have cooling through hole (14) on the said pump cover (1), the first end of said cooling through hole (14) is positioned on said first end face (11), and the second end of said cooling through hole (14) is positioned on the hole wall of said axial hole (13).
2. a kind of pump cover that is used for the boric acid recirculating pump according to claim 1 is characterized in that: the level height of said cooling through hole (14) first end is higher than the level height of said cooling through hole (14) the second end.
3. a kind of pump cover that is used for the boric acid recirculating pump according to claim 1 and 2 is characterized in that: on second end face (12) of said pump cover, the circumference that centers on said pump cover (1) is provided with some axial bolts through holes (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118853 CN202597258U (en) | 2012-03-27 | 2012-03-27 | Pump cover for boric acid recirculation pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118853 CN202597258U (en) | 2012-03-27 | 2012-03-27 | Pump cover for boric acid recirculation pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597258U true CN202597258U (en) | 2012-12-12 |
Family
ID=47314805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118853 Expired - Lifetime CN202597258U (en) | 2012-03-27 | 2012-03-27 | Pump cover for boric acid recirculation pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953195A (en) * | 2019-12-12 | 2020-04-03 | 宁夏宝丰能源集团股份有限公司 | Method and system for flushing mechanical seal of pump |
-
2012
- 2012-03-27 CN CN 201220118853 patent/CN202597258U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953195A (en) * | 2019-12-12 | 2020-04-03 | 宁夏宝丰能源集团股份有限公司 | Method and system for flushing mechanical seal of pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
|
| CX01 | Expiry of patent term |