CN206092268U

CN206092268U - Six nozzle impulse turbine ring canals

Info

Publication number: CN206092268U
Application number: CN201621112380.9U
Authority: CN
Inventors: 谢海; 余静
Original assignee: Chongqing Yunhe Power Generation Equipment Co Ltd
Current assignee: Chongqing Yunhe Power Generation Equipment Co Ltd
Priority date: 2016-10-11
Filing date: 2016-10-11
Publication date: 2017-04-12
Anticipated expiration: 2026-10-11

Abstract

The utility model discloses a six nozzle impulse turbine ring canals, including first ring canal section, second ring canal section and third ring canal section, this three ring canal section arranges along circumference, and the inboard of every ring canal section is equallyd divide and do not is equipped with two nozzles, the corresponding terminal surface of adjacent two rings pipeline section all is equipped with mounting flange, and the mounting flange of connecting bolt on with adjacent two rings pipeline section links to each other to will be first, two, third ring tie -in becomes a whole. The present case adopt the bolt mode connect first, two, the third ring pipeline section, just so need not carry out welding operation at the power station scene, not only joint strength is reliable, has reduced the on -the -spot installation degree of difficulty moreover, and the present case can effectively reduce the nozzle and correspond the kinetic energy loss that ring tie -in located to the runner that kinetic energy is used for assaulting in the frame more rotates, and then the electricity generation, has so both guaranteed the generating efficiency, can reduce the wearing and tearing of ring canal again simultaneously.

Description

Six nozzle impact type water turbine endless tubes

Technical field

The utility model belongs to hydraulic turbine field, more particularly to a kind of six nozzle impact type water turbines endless tube.

Background technology

Endless tube is the important feature of six nozzle impact type water turbines, and existing endless tube is three stage structure, and by the first ring Pipeline section, the second ring pipe section and the 3rd ring pipe section composition, the opposing end surface of these three ring pipe sections passes through to be welded and fixed at power station scene, And the inner side of each ring pipe section has two nozzles, this six nozzles are connected with support.Also, except the 3rd ring pipe section rear end Nozzle beyond, the junction inner chamber of remaining 5 nozzle and corresponding ring pipe section so may result in current similar to Y-shaped It is larger in resistance herein, so as to have lost a large amount of kinetic energy, make a large amount of kinetic energy do idle work, generating efficiency is not only reduced, and And the abrasion of nozzle and corresponding ring pipe section junction can be aggravated, shorten the service life of endless tube.

Further, since three ring pipe sections are by being welded and fixed, so not only workload is big, and Site Welding difficult quality Ensure.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of bolted six nozzle impact type water turbine Endless tube, and while reduce kinetic energy rejection.

The technical solution of the utility model is as follows：A kind of six nozzle impact type water turbine endless tubes, including the first ring pipe section (1), the second ring pipe section (2) and the 3rd ring pipe section (3), these three ring pipe sections circumferentially, divide equally by the inner side of each ring pipe section It is not provided with two nozzles (4)；First ring pipe section (1) positioned at head, the 3rd ring pipe section (3) positioned at afterbody, and first and second, The internal diameter of three ring pipe sections (1,2,3) is gradually reduced from head toward afterbody, it is characterised in that：The correspondence of the two neighboring ring pipe section End face is equipped with mounting flange (5), and connecting bolt (6) is connected the mounting flange (5) on two neighboring ring pipe section, so as to First, second and third ring pipe section (1,2,3) is connected into into an entirety.

In above-mentioned technical proposal, this case connects first, second and third ring pipe section using bolt mode, so there is no need to Power station scene is subjected to, not only bonding strength reliability, and reduces in-site installation difficulty.

Preferably, beyond a nozzle (4) except the 3rd ring pipe section (3) tail end, remaining five nozzle (4) Be spherical inner chamber (Q) with the inner chamber of corresponding ring pipe section junction, and the size of this five spherical inner chambers (Q) by head rearwardly Reduce one by one.

Using above structure design, the kinetic energy rejection of nozzle (4) and corresponding ring pipe section junction can be thus effectively reduced, So that the runner that kinetic energy is more used to impact in support (J) is rotated, and then generate electricity, so both ensure that generating efficiency, and energy Reduce the abrasion of endless tube simultaneously, it is ensured that the service life of endless tube.

For the ease of installing, alignment pin (7) is housed between the mounting flange (5) on the two neighboring ring pipe section.

Beneficial effect：This case connects first, second and third ring pipe section using bolt mode, so there is no need at power station scene It is subjected to, not only bonding strength reliability, and reduces in-site installation difficulty；Also, this case can effectively reduce nozzle With the kinetic energy rejection of corresponding ring pipe section junction, so that the runner that kinetic energy is more used to impact in support is rotated, and then generate electricity, Generating efficiency was so both ensure that, the abrasion of endless tube can have simultaneously been reduced again, it is ensured that the service life of endless tube.

Description of the drawings

Fig. 1 is schematic diagram of the present utility model.

Fig. 2 is the part A enlarged drawing of Fig. 1.

Specific embodiment

With reference to the accompanying drawings and examples the utility model is described in further detail：

As shown in Figure 1, 2, a kind of six nozzle impact type water turbines endless tube, including the first ring pipe section 1, the and of the second ring pipe section 2 3rd ring pipe section 3, circumferentially, the inner side of each ring pipe section is respectively provided with two nozzles 4 to these three ring pipe sections, and this six Individual nozzle 4 is connected with support J.First ring pipe section 1 is located at head, and the 3rd ring pipe section 3 is located at afterbody, and first, second and third ring pipe section Internal diameter be gradually reduced toward afterbody from head.

The corresponding end face of two ring pipe sections is equipped with mounting flange 5, and connecting bolt 6 is by the company on two neighboring ring pipe section Acting flange disk 5 is connected, and junction has preventing water leakage function, so as to by the first ring pipe section 1, the second ring pipe section 2 and the 3rd endless tube Section 3 connects into an entirety.Also, alignment pin 7 is housed between the mounting flange 5 on two neighboring ring pipe section.Except the 3rd Beyond one nozzle 4 of the tail end of ring pipe section 3, remaining five nozzle 4 is in spherical with the inner chamber of corresponding ring pipe section junction Chamber Q, and the size of this five spherical inner chamber Q rearwardly reduces one by one by head.Remaining structure of the present utility model and existing knot Structure is identical, will not be described here.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not with the utility model to limit Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims

1. a kind of six nozzle impact type water turbines endless tube, including the first ring pipe section (1), the second ring pipe section (2) and the 3rd ring pipe section (3), circumferentially, the inner side of each ring pipe section is respectively provided with two nozzles (4) to these three ring pipe sections；First endless tube , positioned at head, the 3rd ring pipe section (3) is positioned at afterbody, and the internal diameter of first, second and third ring pipe section (1,2,3) is from head toward tail for section (1) Portion is gradually reduced, it is characterised in that：The corresponding end face of the two neighboring ring pipe section is equipped with mounting flange (5), connects spiral shell Bolt (6) is connected the mounting flange (5) on two neighboring ring pipe section, so as to first, second and third ring pipe section (1,2,3) be connected Into an entirety.

2. six nozzle impact type water turbines endless tube according to claim 1, it is characterised in that：Except the 3rd ring pipe section (3) beyond a nozzle (4) of tail end, remaining five nozzle (4) is in spherical with the inner chamber of corresponding ring pipe section junction Chamber (Q), and the size of this five spherical inner chambers (Q) rearwardly reduces one by one by head.

3. six nozzle impact type water turbines endless tube according to claim 1, it is characterised in that：The two neighboring ring pipe section On mounting flange (5) between be equipped with alignment pin (7).