CN215979678U - Horizontal double-screw water turbine - Google Patents
Horizontal double-screw water turbine Download PDFInfo
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- CN215979678U CN215979678U CN202122300279.3U CN202122300279U CN215979678U CN 215979678 U CN215979678 U CN 215979678U CN 202122300279 U CN202122300279 U CN 202122300279U CN 215979678 U CN215979678 U CN 215979678U
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Abstract
The utility model discloses a horizontal double-helix water turbine, which comprises: the casing, the casing has feed liquor side and goes out the liquid side, be provided with feed liquor runner and play liquid runner on the casing, the cooperation is installed in the casing, parallel arrangement and synchronous revolution's driving shaft and driven shaft, be provided with first spiral section in the axial of driving shaft, be provided with the second spiral section in the axial of driven shaft, first spiral section, second spiral section and casing enclose and establish into the seal chamber, liquid gets into the casing by the feed liquor side, through the feed liquor runner, the spiral initial end from first spiral section and second spiral section gets into the seal chamber, promote after driving shaft and the driven shaft acting, discharge the casing by the play liquid side through a liquid outlet channel. The horizontal double-helix water turbine can reduce the pressure difference of the inlet and the outlet of the water turbine, ensure the pressure of the outlet side, and drag the foam pump to realize the function of the existing foam mixing fire extinguishing system; the spiral curved surface of the driving/driven shaft has good sealing performance, the displacement error is reduced, and foam liquid with any proportion can be obtained.
Description
Technical Field
The utility model relates to the technical field of fire fighting equipment, in particular to a horizontal double-spiral water turbine.
Background
The water turbine is a hydraulic machine which converts potential energy of water into mechanical energy, and the existing water turbine is provided with a rotating shaft provided with an impeller, and the impeller is driven to rotate to do work through water flow.
In the foam fire extinguishing system in the fire fighting field, the power demand cannot adopt a traditional electric motor or an internal combustion engine, so that the adoption of a water turbine for driving is an advantageous scheme at present. However, the water turbine in the prior art has low efficiency, and water flow after acting can only directly leak out and cannot be continuously used for a foam fire extinguishing system. The foam mixed liquid with accurate proportion required by the foam fire extinguishing system can be realized only by adding other equipment, and the equipment has high complexity and large capital investment. Moreover, the linear relationship between the rotating speed of the water turbine and the volume flow rate of the fire-fighting water passing through the water turbine in the prior art is not accurate, so that the foam concentrate with any proportion cannot be accurately obtained.
Therefore, a horizontal double-spiral water turbine is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a horizontal double-helix water turbine, which solves the problems in the prior art, can completely realize the function of a foam mixing fire extinguishing system by dragging a foam pump, simplifies the system and can accurately obtain foam liquid in any proportion.
The utility model provides a horizontal double-helix water turbine, which comprises:
the casing, the casing has feed liquor side and goes out the liquid side, be provided with feed liquor runner and play liquid runner on the casing, the cooperation is installed in the casing, parallel arrangement and synchronous revolution's driving shaft and driven shaft, be provided with first spiral section on the axis direction of driving shaft, be provided with the second spiral section on the axis direction of driven shaft, first spiral section the second spiral section with the casing encloses and establishes into the seal chamber, and liquid by the feed liquor side gets into the casing, through the feed liquor runner, follow first spiral section with the spiral initial end of second spiral section gets into the seal chamber promotes the driving shaft with after the driven shaft acting, through go out the liquid channel, by it discharges to go out the liquid side the casing.
The horizontal twin spiral water turbine as described above, wherein a predetermined gap is preferably provided between the driving shaft and the driven shaft and the casing.
The horizontal double-spiral water turbine as described above, preferably, a driving gear is provided at a rear end of the driving shaft, a driven gear is provided at a rear end of the driven shaft, and the driving gear and the driven gear are engaged with each other.
The horizontal double-spiral water turbine as described above, preferably, a front bearing seat is provided at a front end of the casing, a rear bearing seat is provided at a rear end of the casing, front ends of the driving shaft and the driven shaft are accommodated in the front bearing seat, and rear ends of the driving shaft and the driven shaft are accommodated in the rear bearing seat.
The horizontal double-spiral water turbine as described above, preferably, the horizontal double-spiral water turbine further includes a bearing assembly, the bearing assembly includes a first bearing disposed in the front bearing seat and sleeved on the driving shaft, a second bearing sleeved on the driven shaft, a third bearing disposed in the rear bearing seat and sleeved on the driving shaft, and a fourth bearing sleeved on the driven shaft, and the driving shaft and the driven shaft are axially and/or radially positioned by the first bearing, the second bearing, the third bearing, and the fourth bearing.
In the horizontal twin-screw water turbine described above, it is preferable that the first bearing and the second bearing are installed in a staggered manner in the axial direction, and the third bearing and the fourth bearing are installed in a staggered manner in the axial direction.
The horizontal double-spiral water turbine as described above, preferably, the horizontal double-spiral water turbine further includes a sealing assembly, the sealing assembly includes a first sealing member disposed at a front end of the driving shaft, a second sealing member disposed at a front end of the driven shaft, a third sealing member disposed at a rear end of the driving shaft, and a fourth sealing member disposed at a rear end of the driven shaft, wherein the first sealing member and the second sealing member are disposed inside the front bearing seat, and the third sealing member and the fourth sealing member are disposed inside the rear bearing seat.
The horizontal double-spiral water turbine as described above, preferably, a front cover having a through hole is provided on an outer side of the front bearing block, the driving shaft extends out after passing through the through hole, and a rear cover is provided on an outer side of the rear bearing block.
The horizontal double-spiral water turbine as described above, wherein preferably, a lubricating medium is injected into the front bearing block and/or the rear bearing block.
The horizontal twin spiral water turbine as described above, wherein it is preferable that the helicoids on the first spiral section and the second spiral section include single-section helicoids or double-side helicoids symmetrically provided on the driving shaft and the driven shaft.
The utility model provides a horizontal double-helix water turbine, which can remarkably reduce the pressure difference of an inlet and an outlet of the water turbine and ensure the pressure of the outlet side through a driving shaft and a driven shaft which are arranged in parallel and rotate synchronously, so that the functions of the existing foam mixed fire extinguishing system can be completely realized while a foam pump is dragged by the water turbine, and the system is simplified; the driving shaft and the driven shaft are provided with independent sealing cavities formed by special spiral curved surfaces, and the spiral curved surfaces have good sealing performance, so that excellent discharge capacity precision can be obtained, accurate linear relation between the output rotating speed of the water turbine and the volume flow of fire water passing through the water turbine is ensured, and discharge capacity errors are reduced.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of an embodiment of a horizontal double-spiral water turbine provided by the utility model;
fig. 2 is a schematic structural diagram of a single-segment helical surface formed by the first thread segment and the second thread segment of the horizontal double-helix water turbine according to the embodiment of the utility model;
FIG. 3 is a schematic view of the water flow direction of FIG. 2;
fig. 4 is a schematic structural diagram of a double-sided helical surface of the first thread segment and the second thread segment of the horizontal double-helix water turbine according to the embodiment of the utility model;
fig. 5 is a schematic view of the water flow direction of fig. 4.
Description of reference numerals:
1-housing 2-drive shaft 21-first spiral section
3-driven shaft 31-second spiral section 4-front bearing seat
5-front cover 6-seal Assembly 61-first seal
62-second seal 63-third seal 64-first seal
7-bearing Assembly 71-first bearing 72-second bearing
73-third bearing 74-fourth bearing 8-driven gear
9-driving gear 10-rear bearing seat 11-rear cover
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
As used in this disclosure, "first", "second": and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1, an embodiment of the present invention provides a horizontal twin-screw water turbine, which includes: casing 1, casing 1 has feed liquor side and play liquid side, be provided with feed liquor runner and play liquid runner on the casing 1, the cooperation is installed in casing 1, parallel arrangement and synchronous revolution's driving shaft 2 and driven shaft 3, be provided with first spiral section 21 on the axis direction of driving shaft 2, be provided with second spiral section 31 on the axis direction of driven shaft 3, first spiral section 21 second spiral section 31 with casing 1 encloses and establishes into the seal chamber, liquid by the feed liquor side gets into casing 1, through the feed liquor runner follows first spiral section 21 with the spiral initial end of second spiral section 31 gets into the seal chamber promotes driving shaft 2 with after 3 doing work of driven shaft, through go out the liquid side discharge casing 1.
The water turbine provided by the utility model has two spiral shafts which are arranged in parallel and has no impeller or blade. The spiral with special curved surface is directly processed on the driving shaft 2 and the driven shaft 3 (the driving shaft 2 corresponds to the first spiral section 21, the driven shaft 3 corresponds to the second spiral section 31), and the spiral and the shaft are integrated. And the driving shaft 2 and the driven shaft 3 are provided with independent sealing cavities formed by special spiral curved surfaces, and the spiral curved surfaces have good sealing performance, so that excellent discharge capacity precision can be obtained, the accurate linear relation between the output rotating speed of the water turbine and the volume flow of the fire water passing through is ensured, and the discharge capacity error is less than 0.7%.
Furthermore, a preset gap is formed between the driving shaft 2 and the driven shaft 3 and the shell 1, so that the driving shaft 2 and the driven shaft 3 are not in contact with each other and are not in contact with the shell during rotation, primary abrasion is avoided, and the service life is prolonged.
Furthermore, the rear end of driving shaft 2 is provided with driving gear 9, the rear end of driven shaft 3 is provided with driven gear 8, driving gear 9 with driven gear 8 meshing connection, driving shaft 2 and driven shaft 3 pass through gear drive like this, can guarantee driving shaft 2 with driven shaft 3 synchronous revolution ensures rotatory in-process contactless, therefore does not have mechanical wear.
In the work, the water turbine is driven by fire water to further drag a foam pump in the foam fire extinguishing system to do work, the stable energy is still provided, the pressure difference of the inlet and the outlet of the water turbine can be less than 11.6% of the input pressure of the fire water, after the fire water is mixed with foam liquid at the outlet of the water turbine, foam mixed liquid with sufficient pressure and accurate mixing ratio is formed and is directly used for extinguishing fire, namely the water turbine can completely realize the function of the existing foam mixed fire extinguishing system while dragging the foam pump, and the system is simplified. Compared with the inaccurate linear relation between the rotating speed of the water turbine and the volume flow of the passing fire-fighting water in the prior art, the water turbine provided by the utility model has accurate discharge capacity, and the rotating speed of the water turbine has accurate linear relation with the volume flow of the passing fire-fighting water, so that foam liquid in any proportion can be accurately obtained.
Therefore, compared with the prior art, the horizontal double-helix water turbine provided by the embodiment can obviously reduce the pressure difference of the inlet and the outlet of the water turbine and ensure the pressure of the outlet side through the driving shaft and the driven shaft which are arranged in parallel and rotate synchronously, so that the functions of the existing foam mixed fire extinguishing system can be completely realized while the water turbine drags the foam pump, and the system is simplified; the driving shaft and the driven shaft are provided with independent sealing cavities formed by special spiral curved surfaces, and the spiral curved surfaces have good sealing performance, so that excellent discharge capacity precision can be obtained, accurate linear relation between the output rotating speed of the water turbine and the volume flow of fire water passing through the water turbine is ensured, and discharge capacity errors are reduced.
Further, a front bearing seat 4 is arranged at the front end of the casing 1, a rear bearing seat 10 is arranged at the rear end of the casing 1, the front ends of the driving shaft 2 and the driven shaft 3 are accommodated in the front bearing seat 4, and the rear ends of the driving shaft 2 and the driven shaft 3 are accommodated in the rear bearing seat 10.
Further, the horizontal double-spiral water turbine further comprises a bearing assembly 7, wherein the bearing assembly 7 comprises a first bearing 71 and a second bearing 72 which are arranged in the front bearing seat 4 and sleeved on the driving shaft 2, a third bearing 73 and a fourth bearing 74 which are arranged in the rear bearing seat 10 and sleeved on the driving shaft 2, and the fourth bearing 74 sleeved on the driven shaft 3, and the driving shaft 2 and the driven shaft 3 are axially and/or radially positioned through the first bearing 71, the second bearing 72, the third bearing 73 and the fourth bearing 74.
As shown in fig. 1, the first bearing 71 and the second bearing 72 are installed in an axially displaced manner, and the third bearing 73 and the fourth bearing 74 are installed in an axially displaced manner. Therefore, the 4 bearings of the present invention are respectively arranged at the two ends of the driving shaft 2 and the driven shaft 3, and the two bearings on the same side are staggered by a certain position in the axial direction, so that the driving shaft 2 and the driven shaft 3 can adopt a smaller center distance, and the sealing performance of the first spiral section 21 and the second spiral section 31 is improved.
Further, the horizontal double spiral turbine further comprises a sealing assembly 6, wherein the sealing assembly 6 comprises a first sealing piece 61 arranged at the front end of the driving shaft 2, a second sealing piece 62 arranged at the front end of the driven shaft 3, a third sealing piece 63 arranged at the rear end of the driving shaft 2 and a fourth sealing piece 64 arranged at the rear end of the driven shaft 3, wherein the first sealing piece 61 and the second sealing piece 62 are arranged on the inner side of the front bearing seat 4, and the third sealing piece 63 and the fourth sealing piece 64 are arranged on the inner side of the rear bearing seat 10. Illustratively, the first seal 61, the second seal 62, the third seal 63, and the fourth seal 64 are mechanical seals.
Further, a front cover 5 with a through hole is arranged on the outer side of the front bearing seat 4, and the driving shaft 2 penetrates through the through hole and then extends out to output torque. The outer side of the rear bearing seat 10 is provided with a rear cover 11.
Further, lubricating media are filled in the front bearing seat 4 and/or the rear bearing seat 10, so that the bearing assembly 7, the driven gear 8 and the driving gear 9 can be lubricated.
Further, as shown in fig. 2, in some embodiments of the present invention, the helical surface on the first helical section 21 and the second helical section 31 is a single-segment helical surface. At this point, the flow of water from one end of the spiral to the other does work, as shown in FIG. 3.
Further, as shown in fig. 4, in other embodiments of the present invention, the helical surfaces of the first helical section 21 and the second helical section 31 are double-sided helical surfaces symmetrically disposed on the driving shaft 2 and the driven shaft 3. At this time, water flow enters from the screw surfaces at the two sides (the screw 1, the screw 2, the screw 3 and the screw 4) which are matched with each other and flows out from the space between the screw surfaces at the two sides, as shown in fig. 5, the diameter of the screw shaft of the water turbine can be effectively controlled, the water turbine can run more stably, and the foam system is suitable for being used in a foam system with a larger flow.
It should be noted that the present invention does not specifically limit the usage scenario of the horizontal double-spiral water turbine, and may be used, for example, in a fire-fighting foam fire-extinguishing system, and may be used to replace a conventional water turbine in a small hydropower plant.
According to the horizontal double-spiral water turbine provided by the embodiment of the utility model, the driving shaft and the driven shaft which are arranged in parallel and rotate synchronously can obviously reduce the pressure difference of the inlet and the outlet of the water turbine and ensure the pressure of the outlet side, so that the function of the existing foam mixed fire extinguishing system can be completely realized while the water turbine drags the foam pump, and the system is simplified; the driving shaft and the driven shaft are provided with independent sealing cavities formed by special spiral curved surfaces, and the spiral curved surfaces have good sealing performance, so that excellent discharge capacity precision can be obtained, accurate linear relation between the output rotating speed of the water turbine and the volume flow of fire water passing through the water turbine is ensured, and discharge capacity errors are reduced.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A horizontal double spiral water turbine, characterized by comprising:
the casing, the casing has feed liquor side and goes out the liquid side, be provided with feed liquor runner and play liquid runner on the casing, the cooperation is installed in the casing, parallel arrangement and synchronous revolution's driving shaft and driven shaft, be provided with first spiral section on the axis direction of driving shaft, be provided with the second spiral section on the axis direction of driven shaft, first spiral section the second spiral section with the casing encloses and establishes into the seal chamber, and liquid by the feed liquor side gets into the casing, through the feed liquor runner, follow first spiral section with the spiral initial end of second spiral section gets into the seal chamber promotes the driving shaft with after the driven shaft acting, through go out the liquid channel, by it discharges to go out the liquid side the casing.
2. The horizontal double spiral water turbine as claimed in claim 1, wherein a predetermined gap is provided between the driving shaft and the driven shaft and the casing.
3. The horizontal double-spiral water turbine as claimed in claim 1, wherein a driving gear is provided at a rear end of the driving shaft, a driven gear is provided at a rear end of the driven shaft, and the driving gear and the driven gear are engaged.
4. The horizontal double spiral water turbine as claimed in claim 1, wherein the front end of the casing is provided with a front bearing seat, the rear end of the casing is provided with a rear bearing seat, the front ends of the driving shaft and the driven shaft are accommodated in the front bearing seat, and the rear ends of the driving shaft and the driven shaft are accommodated in the rear bearing seat.
5. The horizontal double-spiral water turbine as claimed in claim 4, further comprising a bearing assembly, wherein the bearing assembly comprises a first bearing arranged in the front bearing seat and sleeved on the driving shaft, a second bearing sleeved on the driven shaft, a third bearing arranged in the rear bearing seat and sleeved on the driving shaft, and a fourth bearing sleeved on the driven shaft, and the driving shaft and the driven shaft are axially and/or radially positioned through the first bearing, the second bearing, the third bearing and the fourth bearing.
6. The horizontal twin spiral turbine according to claim 5, wherein the first bearing and the second bearing are installed in a staggered manner in the axial direction, and the third bearing and the fourth bearing are installed in a staggered manner in the axial direction.
7. The horizontal twin spiral water turbine as claimed in claim 4, further comprising a sealing assembly including a first sealing member disposed at a front end of the driving shaft, a second sealing member disposed at a front end of the driven shaft, a third sealing member disposed at a rear end of the driving shaft, and a fourth sealing member disposed at a rear end of the driven shaft, wherein the first and second sealing members are disposed inside the front bearing housing, and the third and fourth sealing members are disposed inside the rear bearing housing.
8. The horizontal double-spiral water turbine as claimed in claim 4, wherein a front cover with a through hole is arranged on the outer side of the front bearing seat, the driving shaft extends out after passing through the through hole, and a rear cover is arranged on the outer side of the rear bearing seat.
9. The horizontal double spiral turbine as claimed in claim 4, wherein a lubricating medium is injected into the front bearing seat and/or the rear bearing seat.
10. The horizontal double spiral turbine as claimed in claim 1, wherein the helicoids on the first spiral section and the second spiral section comprise single-section helicoids or double-side helicoids symmetrically disposed on the driving shaft and the driven shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122300279.3U CN215979678U (en) | 2021-09-19 | 2021-09-19 | Horizontal double-screw water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122300279.3U CN215979678U (en) | 2021-09-19 | 2021-09-19 | Horizontal double-screw water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215979678U true CN215979678U (en) | 2022-03-08 |
Family
ID=80464444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122300279.3U Active CN215979678U (en) | 2021-09-19 | 2021-09-19 | Horizontal double-screw water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215979678U (en) |
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2021
- 2021-09-19 CN CN202122300279.3U patent/CN215979678U/en active Active
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