A water flow test device

Abstract

This utility model discloses a water flow performance testing device, including a base, a clamping mechanism, and a water inlet mechanism. The clamping mechanism is used to fix the part to be tested on the base. The water inlet mechanism includes a positioning plate and a connecting pipe. The connecting pipe is fixedly installed on the positioning plate, and the positioning plate is fixedly installed on the base. The outlet end of the connecting pipe presses the clamping pad against the water inlet of the part to be tested. The through hole of the clamping pad connects the pipe hole of the connecting pipe with the water inlet of the part to be tested. This utility model has a simple structure and is easy to manufacture. When using this utility model, the part is supported by the entire support surface, and the outer circle is positioned. The part is subjected to uniform force and stress dispersion, avoiding excessive clamping force and stress concentration that could damage the part, thus reducing the scrap rate of the part. This utility model is easy to install and remove, and has high efficiency. To change the blade cavity, only the nut needs to be loosened and the part rotated circumferentially, avoiding the risk of clamping damage. It has good sealing performance and can accurately calculate the water flow rate.

Description

Technical Field

[0001] This utility model belongs to the technical field of cavity water flow test equipment, specifically relating to a water flow test device. Background Technology

[0002] Currently, the main method for water flow testing is manual water injection. Workers use precision vises to roughly position and fix the part to be tested, then insert a pressure-regulated tap water hose directly into the inlet, visually observing the water flow at the outlet. The sealing method involves wrapping the hose with sealing tape, manually inserting it into the inlet, and sealing it through manual tightening and hose expansion. This water flow testing method has the following drawbacks:

[0003] (1) High component damage rate: The manual clamping and positioning of components can easily damage them. The vise clamping of components only applies force to a local area, which cannot ensure uniform force distribution. This can easily lead to residual stress concentration, damage to the surface coating structure of the components, and result in scrap loss. Moreover, the components need to be re-clamped every time the blade cavity is changed, which greatly increases the risk of clamping damage. (2) Poor sealing performance: Manually wrapping the sealing tape and directly inserting the hose into the component does not result in good contact with the surface of the component's water inlet. As the water pressure increases, the sealing performance deteriorates, leading to pressure leakage and making it difficult to judge the accuracy of the measurement results. (3) Inability to quantitatively calculate flow rate: Due to poor sealing and water leakage, the final collected water volume cannot accurately reflect the true value, and the water flow rate cannot be accurately calculated. (4) Large component positioning error: The vise positioning and fixing method can only position the component in a single axial direction. It cannot position the component in the circumferential angular direction or in the height direction. The arbitrariness of the positioning increases the risk of component quality. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a water flow test device that is simple in structure and easy to operate, which can achieve self-adaptive positioning of the curved surface at the inlet of the blade cavity, ensuring that the water flow channel and the water inlet are sealed and leak-proof, and avoid damage to the blade during clamping.

[0005] The technical solution adopted in this utility model is:

[0006] A water flow testing device includes a base, a clamping mechanism, and a water inlet mechanism. The clamping mechanism is used to fix the part to be tested on the base. The water inlet mechanism includes a positioning plate and a connecting pipe. The connecting pipe is fixedly installed on the positioning plate, and the positioning plate is fixedly installed on the base. The outlet end of the connecting pipe presses the clamping pad against the water inlet of the part to be tested, and the through hole of the clamping pad connects the pipe hole of the connecting pipe with the water inlet of the part to be tested.

[0007] Furthermore, the inlet end of the connecting pipe is connected to an inlet connector; a sealing gasket is provided between the outlet end of the connecting pipe and the clamping pad, and the center hole of the sealing gasket connects the pipe hole of the connecting pipe and the through hole of the clamping pad.

[0008] Furthermore, the connecting pipe is provided with external threads, and the positioning plate is provided with threaded hole I. The external threads on the connecting pipe are screwed into the threaded hole I on the positioning plate.

[0009] Furthermore, the base includes a base plate and a support plate. The bottom of the support plate is welded to the base plate. The included angle between the support plate and the base plate is 75°-90°. Several reinforcing ribs are provided between the support plate and the base plate. A threaded hole II is provided in the middle of the support plate.

[0010] Furthermore, the clamping mechanism includes a double-ended stud, a three-jaw pressure plate, a washer, and a locking nut. One end of the double-ended stud is screwed into the threaded hole II on the support plate. The three-jaw pressure plate has a center hole at its center. The three-jaw pressure plate is fitted onto the double-ended stud and locked by the locking nut to press the part to be tested onto the support plate. The locking nut is screwed onto the other end of the double-ended stud. A washer is provided between the locking nut and the three-jaw pressure plate and is fitted onto the double-ended stud.

[0011] Furthermore, the surface of the clamping pad that contacts the water inlet of the part under test is made of rubber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This utility model has a simple structure and is easy to manufacture;

[0014] (2) When this utility model is used, the parts are supported by the entire support surface and positioned on the outer circle. The parts are subjected to uniform force and the stress is dispersed, which avoids excessive clamping force and stress concentration that could damage the parts and reduces the scrap rate of the parts. This utility model is easy to install and remove and has high efficiency. When changing the blade cavity, it is only necessary to loosen the nut and rotate the parts in the circumferential direction, which avoids the risk of clamping damage.

[0015] (3) The pressure pad of this utility model is designed with a rubber material curved surface to conform to the water inlet part of the contact part. It is pressed and attached to the part by the screw-connecting pipe thread, and has good sealing performance.

[0016] (4) Due to the good sealing performance of this utility model, there is no problem of pressure relief and water leakage. The final collected water volume can accurately reflect the true value and the water flow rate can be accurately calculated.

[0017] (5) The positioning plate of this utility model adopts the positioning pin spatial position, which can ensure that the water inlet connector can enter the water inlet vertically. The three-jaw pressure plate is used to position the part axially and to position the outer circle of the part, thus ensuring the circumferential angular positioning and height positioning of the part. Attached Figure Description

[0018] Figure 1 This is the front view of this utility model.

[0019] Figure 2 This is the right view of this utility model.

[0020] Figure 3 yes Figure 1 The connection relationship between the connecting pipe, gasket and clamping pad.

[0021] Figure 4 This is a schematic diagram of the structure of the part used for testing according to this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1-3 As shown, this utility model includes a base 1, a pressing mechanism, and a water inlet mechanism. The base 1 includes a base plate 1-1 and a support plate 1-2. The support plate 1-2 is welded perpendicularly to the base plate 1-1 (the included angle between the support plate 1-2 and the base plate 1-1 is not less than 75°). Several reinforcing ribs 1-3 are provided between the support plate 1-2 and the base plate 1-1. A threaded hole II is provided in the middle of the support plate 1-2.

[0024] The clamping mechanism is used to clamp the part to be tested onto the base. The clamping mechanism includes a three-jaw clamping plate 2, a double-ended stud 3, a locking nut 4, and a washer 5. One end of the double-ended stud 3 is screwed into the threaded hole II on the support plate 1-2; the three-jaw clamping plate 2 has a center hole at its center, and is fitted onto the double-ended stud 3 and locked by the locking nut 4 to clamp the part to be tested 14 onto the support plate 1-2. The locking nut 4 is screwed onto the other end of the double-ended stud 3, and a washer 5 is provided between the locking nut 4 and the three-jaw clamping plate 2, fitted onto the double-ended stud 3. The washer 5 is a U-shaped washer.

[0025] The water inlet mechanism includes a clamping pad 6, a sealing washer 7, a positioning plate 8, a connecting pipe 9, a sealing ring 10, and a water inlet connector 11. The positioning plate 8 is fixedly connected to the support plate 1-2 by two positioning pins 12 and multiple screws 13. The positioning plate 8 has a threaded hole I, and the connecting pipe 9 has an external thread, which is screwed into the threaded hole I on the positioning plate 8. The water inlet end of the connecting pipe 9 is connected to the water inlet connector 11; the connection between the connecting pipe 9 and the water inlet connector 11 is sealed with a sealing ring 10. The water outlet end of the connecting pipe 9 presses the clamping pad 6 against the water inlet of the part to be tested. The clamping pad 6 has a through hole that connects the pipe hole of the connecting pipe to the water inlet 14-1 of the part to be tested 14. A sealing washer 7 is provided between the water outlet end of the connecting pipe 9 and the clamping pad 6, and the center hole of the sealing washer 7 connects the pipe hole of the connecting pipe 9 and the through hole of the clamping pad 6. The surface of the clamping pad 6 that contacts the water inlet of the part to be tested 14 is made of rubber.

[0026] The testing method of this utility model is as follows: The part to be tested 14 has dozens of blade-shaped cavities, which are evenly arranged along the circumference. Each cavity needs to be tested with water flow. The part to be tested 14 is installed in the positioning hole of the three-jaw pressure plate 2, and the part to be tested 14 is rotated to ensure that the water inlet of the blade cavity is vertically upward. Then, the washer 5 and the three-jaw pressure plate 2 are tightened by screwing the locking nut 4 to axially tighten the part to be tested 14. The clamping pad 6 is installed, and after ensuring that the curved surface fits, the connecting pipe 9 is screwed to lock the clamping pad 6. Finally, the water source hose is connected. The water flow at the outlet 14-2 is observed. The water line at the tail edge of the outlet 14-2 is clearly visible, the water volume is evenly distributed, and the water flow direction, water line thickness, and water line length near the outlet of the split are basically consistent. The number of water flows is consistent with the number of splits and corresponds one-to-one. Seepage and blockage of splits are not allowed, which means it is qualified. When it is necessary to calculate the flow rate Q of a single leaf, the container timing method is used. The total volume of water collected within a specified time T is V, which can be used for calculation: Q(L / min)=60×V(L) / T(min).

Claims

1. A water flow testing device, comprising a base, a clamping mechanism, and a water inlet mechanism; wherein the clamping mechanism is used to fix the part to be tested onto the base; characterized in that: The water inlet mechanism includes a positioning plate and a connecting pipe; the connecting pipe is fixedly installed on the positioning plate, and the positioning plate is fixedly installed on the base; the water outlet end of the connecting pipe presses the clamping pad against the water inlet of the part to be tested, and the through hole of the clamping pad connects the pipe hole of the connecting pipe with the water inlet of the part to be tested.

2. The water flow test apparatus according to claim 1, characterized in that: The inlet end of the connecting pipe is connected to the inlet connector; a sealing gasket is provided between the outlet end of the connecting pipe and the clamping pad, and the center hole of the sealing gasket connects the pipe hole of the connecting pipe and the through hole of the clamping pad.

3. The water flow testing device according to claim 1, characterized in that: The connecting pipe is provided with external threads, and the positioning plate is provided with threaded hole I. The external threads on the connecting pipe are screwed into threaded hole I on the positioning plate.

4. The water flow test apparatus according to claim 1, characterized in that: The base includes a base plate and a support plate. The bottom of the support plate is welded to the base plate. The included angle between the support plate and the base plate is 75°-90°. Several reinforcing ribs are provided between the support plate and the base plate. A threaded hole II is provided in the middle of the support plate.

5. The water flow test apparatus according to claim 4, characterized in that: The clamping mechanism includes a double-ended stud, a three-jaw pressure plate, a washer, and a locking nut. One end of the double-ended stud is screwed into the threaded hole II on the support plate. The three-jaw pressure plate has a center hole at its center. The three-jaw pressure plate is fitted onto the double-ended stud and locked by the locking nut to press the part to be tested onto the support plate. The locking nut is screwed onto the other end of the double-ended stud. A washer is provided between the locking nut and the three-jaw pressure plate and is fitted onto the double-ended stud.

6. The water flow test apparatus according to claim 1, characterized in that: The surface of the clamping pad that contacts the water inlet of the part under test is made of rubber.

Images