CN216199268U - Self-balancing multistage pump outer water cooling cavity structure - Google Patents
Self-balancing multistage pump outer water cooling cavity structure Download PDFInfo
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- CN216199268U CN216199268U CN202122451923.7U CN202122451923U CN216199268U CN 216199268 U CN216199268 U CN 216199268U CN 202122451923 U CN202122451923 U CN 202122451923U CN 216199268 U CN216199268 U CN 216199268U
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Abstract
The utility model discloses an external water cooling cavity structure of a self-balancing multistage pump, which comprises a rotor part, a mechanical seal gland and an internal mechanical seal cavity, wherein a mechanical seal cavity is arranged between the mechanical seal gland and the internal mechanical seal cavity, and a sealing plate is tightly matched with the outer diameter of the internal mechanical seal cavity to form the external water cooling cavity; o-shaped sealing rings are arranged at the contact positions of the excircle and the plane of the sealing plate and the inner cavity of the mechanical seal; the mechanical seal gland is connected with the sealing plate through a nut and a stud; the outer water cooling cavity is provided with a cooling water inlet and a cooling water outlet. The technical problems that in the prior art, the outside of the seal cavity is not cooled by liquid, the medium of the mechanical seal cavity is vaporized, the mechanical seal is subjected to dry friction, the mechanical seal leakage is caused, the shutdown and the maintenance of the pump are caused are solved, the continuous and stable operation of the mechanical seal when the medium temperature is higher than 100 ℃ is ensured, and the normal work of the pump is ensured.
Description
Technical Field
The utility model relates to the technical field of pumps, in particular to an external water cooling cavity structure of a self-balancing multistage pump.
Background
The self-balancing multistage pump is a new substitute product developed aiming at the problems of low working efficiency, short service life and the like caused by easy abrasion of a horizontal disc or a balance drum mechanism of the traditional multistage pump in the using process, and is provided with the impeller rotor components which are symmetrically arranged, the axial forces generated by the symmetrical impellers of all stages are mutually offset, the automatic balance of huge axial thrust in a pump cavity can be realized without adopting a balance disc structure, the problem caused by abrasion of a balancing device is thoroughly solved, and the reliability and the service life of the pump are greatly improved.
The self-balancing multistage pump can automatically balance the axial force due to high lift, so that the self-balancing multistage pump is widely used in occasions with high conveying lift.
The cooling and lubrication of the mechanical seal in the sealing cavity at two ends of the self-balancing multistage pump depend on leading out a medium from a high-pressure area of the pump and leading the medium into the mechanical seal cavity through a small pipe, and the configuration of the flushing mechanical seal is shown in figure 1 (the overall schematic diagram of the mechanical seal cavity structure of the original self-balancing multistage pump).
However, in the process of implementing the technical solution of the present invention in the embodiment of the present application, the inventor of the present application finds that the above-mentioned technology has at least the following technical problems:
when the medium temperature is above 100 ℃, the temperature of the medium which is drained from the outlet of the pump and enters the mechanical seal cavity through the small pipe to be washed in is raised again on the basis of the original 100 ℃ due to the continuous friction of the sealing surface in the sealing cavity, the medium is gasified when reaching the gasification temperature of the medium liquid, no liquid cooling and lubrication are caused to the sealing surface, the dry friction of the sealing surface of the mechanical seal is caused, the leakage of the mechanical seal is caused, and the shutdown and the overhaul of the pump are caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a self-balancing multistage pump outer water cooling cavity structure, has solved among the prior art seal cavity outside and has not had liquid cooling, and causes the vaporization of machine seal cavity body medium, and machine seal dry friction arouses the machine to seal and leaks, causes the technical problem of shutting down, the maintenance of pump, has realized guaranteeing that the machine seals last, steady operation when the medium temperature is more than 100 ℃, has ensured the normal work of pump.
The embodiment of the application provides an outer water cooling cavity structure of self-balancing multistage pump, including rotor part, machine seal gland and the interior cavity of machine seal, machine seal gland and machine seal interior cavity between be provided with the machine seal chamber, the machine seal interior cavity external diameter tightly be furnished with the closing plate and form outer water cooling cavity.
Furthermore, the contact positions of the excircle and the plane of the sealing plate and the inner cavity of the mechanical seal are provided with O-shaped sealing rings.
Furthermore, the mechanical seal gland is connected with the sealing plate through a nut and a stud.
Furthermore, the outer water cooling cavity is provided with a cooling water inlet and a cooling water outlet.
Furthermore, the mechanical seal cavity introduces the medium in the high-pressure area of the pump through a small pipe.
Further, the small pipe passes through the outer water cooling cavity.
Furthermore, the outer water cooling cavity forms cooling water circulation through a cooling water inlet and a cooling water outlet to cool the medium in the small pipe.
Further, a mechanical seal or a filler seal is arranged in the mechanical seal cavity.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
because the sealing plate is tightly matched with the outer diameter of the inner cavity of the mechanical seal to form the outer water cooling cavity, and the outer water cooling cavity forms cooling water circulation through the cooling water inlet and the cooling water outlet to cool the medium in the small tube and the mechanical seal cavity, the technical problems that in the prior art, the dry friction of the sealing surface of the mechanical seal is caused by the fact that the sealing surface is vaporized due to the rise of the temperature of the medium, no liquid is cooled and lubricated, and the leakage of the mechanical seal is caused, the shutdown and the maintenance of the pump are caused are effectively solved, and further, the sufficient lubrication and the cooling of the mechanical sealing surface are ensured, so that the continuous and stable operation of the mechanical seal when the temperature of the medium is more than 100 ℃ is ensured, and the normal work of the pump is ensured.
Drawings
Fig. 1 is a schematic structural diagram in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a self-balancing multistage pump outer water cooling chamber structure, has solved among the prior art sealed face and has risen the vaporization because of medium temperature, and no liquid cooling, lubrication, and cause the sealed face dry friction of machine seal, arouse the machine to seal and leak, cause the technical problem of shut down, the maintenance of pump, realized guaranteeing the machine seal at medium temperature last, steady operation when more than 100 ℃, ensured the normal work of pump.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example one
A self-balancing multistage pump outer water cooling cavity structure comprises a rotor part 1, a mechanical seal gland 2 and a mechanical seal inner cavity 8, wherein a mechanical seal cavity 7 is arranged between the mechanical seal gland 2 and the mechanical seal inner cavity 8, and a sealing plate 3 is tightly matched with the outer diameter of the mechanical seal inner cavity 8 to form an outer water cooling cavity 5;
o-shaped sealing rings 4 are arranged at the contact positions of the upper end and the lower end of the sealing plate 3 and the inner cavity 8 of the mechanical seal;
the mechanical seal gland 2 is connected with the sealing plate 3 through a nut and a stud;
the outer water cooling cavity 5 is provided with a cooling water inlet and a cooling water outlet.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
because the sealing plate is tightly matched with the outer diameter of the inner cavity of the mechanical seal to form the outer water cooling cavity, and the outer water cooling cavity forms cooling water circulation through the cooling water inlet and the cooling water outlet to cool the medium in the small tube and the mechanical seal cavity, the technical problems that in the prior art, the dry friction of the sealing surface of the mechanical seal is caused by the fact that the sealing surface is vaporized due to the rise of the temperature of the medium, no liquid is cooled and lubricated, and the leakage of the mechanical seal is caused, the shutdown and the maintenance of the pump are caused are effectively solved, and further, the sufficient lubrication and the cooling of the mechanical sealing surface are ensured, so that the continuous and stable operation of the mechanical seal when the temperature of the medium is more than 100 ℃ is ensured, and the normal work of the pump is ensured.
The space of an outer water cooling cavity is increased, cooling of the machine seal cavity medium is formed, and the machine seal cavity medium cooling device is compact in structure, high in cooling efficiency and convenient in pipeline arrangement.
Example two
The mechanical seal cavity 7 introduces the medium in the high-pressure area of the pump through the small pipe 6; the small pipe 6 passes through the outer water cooling cavity 5; the outer water cooling cavity 5 forms cooling water circulation through a cooling water inlet and a cooling water outlet to cool the medium in the small pipe 6 and the mechanical seal cavity; and a mechanical seal or a filler seal is arranged in the mechanical seal cavity 7.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the medium which is led out from the outlet of the pump and reaches the mechanical seal cavity through the small pipe can be cooled by 30-40 ℃ under the continuous cooling action of the external water cooling cavity cooled by circulating water, so that the temperature of the sealing surface in the mechanical seal cavity is always controlled in a good state, and the cooling and the lubrication of the sealing surface are ensured.
The protection point of the utility model is that the outer water cooling cavity is arranged outside the mechanical seal cavity, the function of the mechanical seal can be realized by the mechanical seal, the requirement of heat preservation or heating medium is similar, hot water or steam is introduced into the mechanical seal outer cavity, the heat preservation and heating functions required by the self-balancing multistage pump in the medium conveying process are achieved, and the protection point is also in the patent protection scope.
The structure of an outer water cooling cavity arranged outside the machine seal cavity is also in the protection scope of the patent. Structurally, the structure of the external water cooling chamber formed by integral casting is fed with the circulating liquid by machining at its corresponding position, and its corresponding forming method is also within the scope of protection.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various changes and modifications may be made in the utility model without departing from the utility model
With clear spirit and scope. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. The utility model provides an outer water cooling cavity structure of self-balancing multistage pump, includes rotor part, machine seal gland and machine seal interior cavity between be provided with machine seal chamber, its characterized in that: the outer diameter of the inner cavity of the machine seal is tightly matched with a sealing plate to form an outer water cooling cavity;
o-shaped sealing rings are arranged at the contact positions of the excircle and the plane of the sealing plate and the inner cavity of the mechanical seal;
the mechanical seal gland is connected with the sealing plate through a nut and a stud;
the outer water cooling cavity is provided with a cooling water inlet and a cooling water outlet.
2. The structure of the external water cooling cavity of the self-balancing multistage pump as claimed in claim 1, wherein: the mechanical seal cavity introduces a medium at a high pressure area of the pump through a small pipe;
the small pipe passes through the outer water cooling cavity.
3. The structure of the external water cooling cavity of the self-balancing multistage pump as claimed in claim 1, wherein: the outer water cooling cavity forms cooling water circulation through a cooling water inlet and a cooling water outlet to cool the medium in the small pipe.
4. The structure of the external water cooling cavity of the self-balancing multistage pump as claimed in claim 1, wherein: and a mechanical seal or a filler seal is arranged in the mechanical seal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122451923.7U CN216199268U (en) | 2021-10-12 | 2021-10-12 | Self-balancing multistage pump outer water cooling cavity structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122451923.7U CN216199268U (en) | 2021-10-12 | 2021-10-12 | Self-balancing multistage pump outer water cooling cavity structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199268U true CN216199268U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122451923.7U Active CN216199268U (en) | 2021-10-12 | 2021-10-12 | Self-balancing multistage pump outer water cooling cavity structure |
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| Country | Link |
|---|---|
| CN (1) | CN216199268U (en) |
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2021
- 2021-10-12 CN CN202122451923.7U patent/CN216199268U/en active Active
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