CN217358981U

CN217358981U - Adjustable large-flow nozzle spraying test bed

Info

Publication number: CN217358981U
Application number: CN202221291731.2U
Authority: CN
Inventors: 张建平; 唐朝海
Original assignee: Sichuan Zhongchen Precision Casting Co ltd
Current assignee: Sichuan Zhongchen Precision Casting Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-09-02
Anticipated expiration: 2032-05-25

Abstract

The utility model relates to a nozzle test field discloses a large-traffic nozzle spraying test bench with adjustable, including large-traffic nozzle, water tank, water pump and be used for controlling the velocity of flow or the hydraulic control system of water pump, large-traffic nozzle sets up in the water tank, large-traffic nozzle is linked together through the play water end of water supply line with the water pump. The utility model discloses a test bench mainly comprises large-traffic nozzle, water tank, water pump and the velocity of flow or hydraulic control system who is used for controlling the water pump, changes the velocity of flow of water pump through control system, reaches the test to the nozzle under the different work condition, and easy operation, practicality are strong. The practical working condition of the large-flow nozzle in the operation of the nuclear power station deaerator can be truly simulated, and the quality condition and the performance condition in the operation process of the nozzle can be tested.

Description

Adjustable large-flow nozzle spraying test bed

Technical Field

The utility model relates to a nozzle test field, concretely relates to large-traffic nozzle spraying test bench with adjustable.

Background

The large-flow nozzle is a key device for the deaerator of the nuclear power station, and the design performance and the reliability of the manufacturing quality of the large-flow nozzle directly influence the normal operation of the deaerator of the nuclear power station and even the whole nuclear power station, so the quality and the performance of the nozzle must be ensured. The existing testing device cannot truly simulate the actual working condition of a large-flow nozzle in the operation of a nuclear power station deaerator.

Disclosure of Invention

An object of the utility model is to provide a large-traffic nozzle spraying test bench with adjustable solve current testing arrangement and fail the problem of the operating condition of the large-traffic nozzle of true simulation in the operation of nuclear power station oxygen-eliminating device.

In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: an adjustable large-flow nozzle spraying test bed comprises a large-flow nozzle, a water tank, a water pump and a control system for controlling the flow rate or the water pressure of the water pump, wherein the large-flow nozzle is arranged in the water tank and is communicated with the water outlet end of the water pump through a water conveying pipeline.

Preferably, still include the tank, the end of intaking of water pump is located the tank, the bottom intercommunication of water tank has the wet return, the one end that the water tank was kept away from to the wet return is linked together with the tank.

Preferably, the control system comprises a control cabinet, a control circuit is arranged in the control cabinet, the control circuit comprises a controller, a driving circuit, a flow detector, a water pressure detector and a key circuit, and the driving circuit, the flow detector, the water pressure detector and the key circuit are all electrically connected with the controller;

the drive circuit is used for driving the water pump to work, and the flow detector and the water pressure detector are both arranged on the water supply pipeline.

Preferably, the water supply pipeline is arranged on the bracket.

Preferably, the water outlet end of the water supply pipeline is provided with a filtering device, and the large-flow nozzle is connected to the filtering device;

the filtering device comprises a cylinder body, one end of the cylinder body is installed on the end part of the water supply pipeline, the other end of the cylinder body is connected with the large-flow nozzle, one end of the cylinder body is connected with an annular plate, and the inner annular wall of the annular plate is connected with a filter screen sleeve.

Preferably, the bottom of the cylinder is provided with a support seat for supporting the filter screen sleeve, and the support seat is connected with the annular plate through a second screw rod.

Preferably, the lower part of the cylinder body is of a table body structure, a plurality of supporting blocks are connected around the supporting seat, and the supporting blocks abut against the inner wall of the lower part of the cylinder body.

The beneficial effects of the utility model are concentrated and are embodied in:

1. the utility model discloses a test bench can truly imitate the operating condition of large-traffic nozzle in the operation of nuclear power station oxygen-eliminating device, tests out the quality situation and the performance situation of operation in-process of nozzle.

2. The utility model discloses a test bench mainly comprises large-traffic nozzle, water tank, water pump and the velocity of flow or hydraulic control system who is used for controlling the water pump, changes the velocity of flow of water pump through control system, reaches the test to the nozzle under the different work condition, and easy operation, practicality are strong.

Drawings

FIG. 1 is a schematic view of the overall structure of the experiment table of the present invention;

FIG. 2 is a schematic axial cross-sectional view of the filter assembly and the high flow nozzle of the present invention;

FIG. 3 is an enlarged view of portion A of the structure shown in FIG. 2;

illustration of the drawings: 1. an elastic engaging portion; 2. a disc; 3. a through hole; 4. a ring body; 5. a clamping groove; 7. a connecting rod; 8. connecting lugs; 9. a guard ring; 10. a first screw; 11. a fin; 12. closing the plate; 13. a water tank; 15. a water pump; 16. a water return pipe; 17. a control cabinet; 18. a flow detector; 19. a water pressure detector; 20. a support; 21. a barrel; 22. a water supply pipeline; 23. an annular plate; 24. a filter screen sleeve; 25. a supporting seat; 26. a second screw; 27. and (7) a supporting block.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, an adjustable large-flow nozzle spray test bed comprises a large-flow nozzle, a water tank 13, a water pump 15, and a control system for controlling the flow rate or water pressure of the water pump 15, wherein the large-flow nozzle is arranged in the water tank 13 and is communicated with the water outlet end of the water pump 15 through a water supply pipeline 22; water pump 15 adopts high pressure water pump 15 in this embodiment, and high pressure water pump 15 injects rivers in the nozzle through water supply pipeline 22, and then realizes testing the design performance and the manufacturing quality of nozzle, and control system's setting simultaneously can change the velocity of flow and the water pressure of water pump 15, and then can truly imitate the operating condition of large-traffic nozzle in the operation of nuclear power station oxygen-eliminating device, tests out the quality situation and the performance situation of operation in-process of nozzle.

This laboratory bench still includes tank and support 20, and support 20 is used for installing the water supply pipeline, the end of intaking of water pump 15 is located the tank, the bottom intercommunication of water tank 13 has wet return 16, the one end that water tank 13 was kept away from to wet return 16 is linked together with the tank, and then the water that large-traffic nozzle jetted out spills into water tank 13, and the water in the water tank 13 refluxes in the tank again, can realize the cyclic utilization at water source.

In this embodiment, the control system includes a control cabinet 17, a control circuit is disposed in the control cabinet 17, the control circuit includes a controller, a driving circuit, a flow detector 18, a water pressure detector 19 and a key circuit, and the driving circuit, the flow detector 18, the water pressure detector 19 and the key circuit are all electrically connected to the controller; the controller is a PLC controller, the key circuit is mainly used for starting the water pump 15, adjusting the flow rate and the like, the driving circuit is a circuit commonly used in the market, and the specific structure of the circuit is not redundantly described in the embodiment;

the driving circuit is used for driving the water pump 15 to work, and the flow detector 18 and the water pressure detector 19 are both arranged on the water supply pipeline 22.

When the nozzle is used, referring to the actual working condition of the nozzle in the deaerator of the nuclear power station, water flow is injected into the nozzle through the high-pressure water pump 15, and the design performance and the manufacturing quality of the nozzle are tested;

(1) gradually increasing the water pressure, and testing the quality condition and the spraying performance effect of the large-flow nozzle under different water pressures and flows;

(2) and testing whether the high-flow nozzle can meet the required quality and performance requirements under the rated working water pressure and working flow.

Impurities may exist in the water storage tank, so that the influence on the test work caused by the impurities entering the large-flow nozzle is avoided; the water outlet end of the water supply pipeline 22 is provided with a filtering device, as shown in fig. 2, the large flow nozzle is connected to the filtering device; the filtering device comprises a cylinder 21, one end of the cylinder 21 is installed on the end part of the water supply pipeline 22, the other end of the cylinder is connected with the large-flow nozzle, one end of the cylinder 21 is connected with an annular plate 23, and the inner annular wall of the annular plate 23 is connected with a filter screen sleeve 24. Therefore, water discharged from the water delivery pipeline 22 is filtered by the filter screen sleeve 24 in the cylinder 21, so that impurities with larger volume in a water source are filtered, and the accuracy of the test is improved.

When the water flow flows at a high speed, the water flow is easy to cause the filter screen sleeve 24 or the filter screen sleeve 24 has more impurities, the filter screen sleeve 24 is poor in bearing capacity, and the filter screen sleeve 24 is easy to damage. In this embodiment, therefore, the bottom of the cylinder 21 is provided with a support 25 for supporting the filter screen 24, and the support 25 is connected to the annular plate 23 by a second screw 26; in the installation of the supporting seat 25, the impact force applied to the supporting seat 25 is mainly borne by the annular plate 23; for this reason, in this embodiment, the lower portion of the cylinder 21 is a table-shaped structure, a plurality of supporting blocks 27 are connected around the supporting seat 25, and the supporting blocks 27 abut against the inner wall of the lower portion of the cylinder 21; the supporting blocks 27 are provided to relieve the annular plate 23 from stress.

As shown in fig. 2-3, in this embodiment, the large-flow nozzle includes a seat cover, one end of the seat cover is a closed structure, the other end of the seat cover is connected to a water supply pipeline, a plurality of groups of injection disks are sleeved on the seat cover, the injection disks are communicated with the inside of the seat cover, the injection disks are provided with a plurality of expandable elastic engaging portions 1 along a radial direction, and each elastic engaging portion 1 extends along a circumferential direction of the injection disk; after water is introduced into the nozzle, the occlusion part can be opened under the action of water pressure to form an injection gap, water flow is discharged out of the injection dish plate, and therefore uniform injection without dead angles around the nozzle is achieved, and the nozzle is simple in structure and high in practicability; and secondly, the nozzle has higher injection efficiency, and the size of the deaerator of the nuclear power station can be effectively reduced.

In the embodiment, as for the specific structure of the injection disk, that is, as shown in fig. 2, each group of injection disks includes a pair of annular disks 2, one side of each disk 2 is connected to the seat cover, the cross section of each disk 2 is in a wave-shaped structure, the concave parts of the two disks 2 abut against each other to form an elastic engaging part 1, in the embodiment, the elastic engaging parts 1 are two, one elastic engaging part 1 is located in the middle of each disk 2, the other elastic engaging part 1 is located on the edge of each disk 2, and a plurality of through holes 3 are formed in the seat cover between the two disks 2; water in the seat sleeve enters between the two discs 2 through the through hole 3, and then the occlusion part forms an injection gap under the action of water pressure, or the occlusion part has a certain gap, so that large-flow injection around is realized.

In order to facilitate the assembly of the disc 2 and the seat cover, in the embodiment, the seat cover includes a plurality of ring bodies 4 coaxially overlapped and connected, the through hole 3 is arranged on the ring bodies 4, a clamping groove 5 is arranged between two adjacent ring bodies 4, one side of the disc 2 is pressed in the clamping groove 5, as shown in fig. 2, after the disc 2 is pressed in the clamping groove 5, a sealing effect can be achieved, and water is prevented from seeping out from between the disc 2 and the clamping groove 5; meanwhile, the seat cover also comprises a plurality of connecting rods 7 used for connecting the ring bodies 4, a plurality of connecting lugs 8 are arranged on each ring body 4, the connecting lugs 8 on each ring body 4 are sleeved on the corresponding connecting rods 7, the connecting rods 7 can be screw rods, one ends of the screw rods can be directly connected with the other ends of the cylinder bodies 21, the communication between the nozzles and the water supply pipeline is realized, and anti-falling nuts are arranged at the other ends of the screw rods, so that the ring bodies 4 are mutually compressed; the closed structure at one end of the seat cover can be formed by connecting a sealing plate 12 on the ring body 4 at one side, and the connecting rod 7 is also arranged on the sealing plate 12 in a penetrating way.

Because the disc 2 is in a sheet-like structure, in order to avoid deformation and damage caused by collision between the disc 2 and other objects, the disc-shaped optical disc further comprises a plurality of protection rings 9, 3-4 pairs of disc 2 are arranged between the two protection rings 9, the outer diameter of each protection ring 9 is larger than that of the disc 2, and the protection rings 9 are connected to the ring body 4 through a plurality of first screw rods 10.

In order to change the injection direction of each group of injection disks, a plurality of fins 11 are arranged on the edge of the disk 2, the edge of the disk 2 is occluded to form a second elastic occlusion part 1, and the fins 11 on two disks 2 of the same group of injection disks form a superposed downward inclined structure, a superposed upward inclined structure or an intercrossed structure.

For the coincident downward inclined structure of the fins 11, the spraying disc has two spraying directions, and water flow is sprayed along the radial direction of the nozzle at the edge of the disc 2 without the fins 11; at the overlapping portions of the fins 11, the water flow is jetted in a downward inclined direction.

For the overlapped and upward inclined structure of the fins 11, the spraying disc has two spraying directions, and water flow is sprayed along the radial direction of the nozzle at the edge of the disc 2 without the fins 11; at the overlapping portions of the fins 11, the water flow is jetted in an upwardly inclined direction.

With the interdigitated configuration of the fins 11, the spray disk now has two spray directions, one of which is upwardly inclined and the second of which is downwardly inclined.

In practical application, the three arrangement structures of the fins 11 can be selected according to practical requirements, so that the nozzles meet the requirements of different spraying directions; and the three arrangement structures are applied simultaneously, so that the omnibearing spraying of the nozzle can be realized.

It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in the present application.

Claims

1. The utility model provides a large-traffic nozzle spraying test bench with adjustable which characterized in that: the water pump comprises a large-flow nozzle, a water tank (13), a water pump (15) and a control system for controlling the flow rate or the water pressure of the water pump (15), wherein the large-flow nozzle is arranged in the water tank (13), and is communicated with the water outlet end of the water pump (15) through a water conveying pipeline (22).

2. The adjustable high-flow nozzle spray test bed according to claim 1, characterized in that: still include the tank, the end of intaking of water pump (15) is located the tank, the bottom intercommunication of water tank (13) has wet return (16), wet return (16) keep away from the one end of water tank (13) and be linked together with the tank.

3. The adjustable high-flow nozzle spray test bed according to claim 1, characterized in that: the control system comprises a control cabinet (17), a control circuit is arranged in the control cabinet (17), the control circuit comprises a controller, a driving circuit, a flow detector (18), a water pressure detector (19) and a key circuit, and the driving circuit, the flow detector (18), the water pressure detector (19) and the key circuit are all electrically connected with the controller;

the driving circuit is used for driving the water pump (15) to work, and the flow detector (18) and the water pressure detector (19) are both installed on the water supply pipeline (22).

4. The adjustable high-flow nozzle spray test bed according to claim 1, characterized in that: the water supply pipeline is characterized by further comprising a support (20), and the water supply pipeline (22) is installed on the support (20).

5. The adjustable high-flow nozzle spray test bed according to claim 1, characterized in that: a water outlet end of the water supply pipeline (22) is provided with a filtering device, and the large-flow nozzle is connected to the filtering device;

the filtering device comprises a cylinder body (21), one end of the cylinder body (21) is installed on the end part of a water feeding pipeline (22), the other end of the cylinder body is connected with a large-flow nozzle, one end of the cylinder body (21) is connected with an annular plate (23), and the inner annular wall of the annular plate (23) is connected with a filter screen sleeve (24).

6. The adjustable high-flow nozzle spray test bed according to claim 5, characterized in that: the bottom of the cylinder body (21) is provided with a supporting seat (25) for supporting the filter screen sleeve (24), and the supporting seat (25) is connected with the annular plate (23) through a second screw (26).

7. The adjustable high-flow nozzle spray test bed according to claim 6, characterized in that: the lower part of barrel (21) is the stage body shape structure, be connected with a plurality of supporting shoes (27) around supporting seat (25), supporting shoe (27) support and lean on the inner wall of barrel (21) lower part.