JPS60157000A - Hydraulic ram - Google Patents

Abstract

PURPOSE:To reduce an impact noise of a valve by providing a high-pressure tank, which is provided with a pumping-up valve in the downstream of the bent pipe part bending upward on the tip of a slant duct and an automatic opening/ closing valve in the upstream of said bent pipe part, of and fixing an elastic body to a part, to sit on a valve seat, of each valve. CONSTITUTION:In case an automatic opening/closing valve 14 is suddenly blocked during operation of a hydraulic ram, high-pressure supply water generated in a slant duct 9 can dash into a pumping-up valve 12 by only making a straight advance and smoothly turning a fairly short bent pipe part 11 so that pumped water is effectively sent into the high-pressure tank 13 without any loss of dynamic pressure. Since the pumping-up valve 12 is in somewhat lower position than the automatic opening/closing valve 14, probability of turning into the pumping-up valve 12 by an air temporarily sucked at the opening time of said valve 14, is reduced and operation of said valve 12 is stabilized. Further, by providing both valves 12, 14 with rubber rings 15, 16 respectively an impact noise at the time of contact of both valves 12, 14 with valve seats is extremely reduced, and besides endurance of each valve is improved.

Description

[Detailed description of the invention] The present invention is characterized in that an automatic opening/closing valve for supply water (-fire water) and a take-out hole for pumped water (secondary water) are provided separately in the inclined pipe that connects to the water source tank and drains. This invention relates to improvements to water hammer pumps.

Conventional water hammer pumps of this type are shown in Fig. 1 (a) and Fig. 1 (t).
b>, the yawn 1.2 is arranged at the most downstream of the primary water pipe (inclined pipe) 3.4, and the secondary valve (pumping valve) 5.
6 is located upstream of the water inlet pipe 3.4.
It was customary to place them on the 11th sword.

However, when arranged in such a way, the above-mentioned - yawn 1.2
When the water is rapidly blocked, the high pressure water generated by the water hammer phenomenon inside the water inlet pipe 3.4 suddenly moves upward and sideways as shown by the arrow 7.8 as it heads towards the secondary valve 5.6. For this reason, sharp bends cause a large dynamic pressure loss due to steep bends, and the reflected low-pressure waves of the water hammer action - Yawn 1.
Z2-? f: The air that was sucked in went around to the upstream secondary expansion side, preventing the generation of high pressure during the next operation, often causing the operation to be delayed by 4 degrees.

In addition, since the valve and valve seat of conventional water ram pumps such as TPL, 2, and 5.6 are made of metal, the impact noise when they are seated is extremely loud, and if the noise is large, both the valve and the valve seat are made of metal. had low durability.

The present invention hastened to solve the problems of the prior art, and
``L'' has been solved as a result of various studies, which reduces the dynamic pressure of the secondary water and improves the performance when the flow rate of the secondary water is large, and δ et al. The primary objective is to provide a water hammer pump that prevents the air sucked from the yawning from entering the secondary expansion side, reduces the impact noise of the valve, and improves the durability. The second purpose is to provide a water ram pump that meets the specifications.

For the first purpose (+- slow growth), the aquatic plant pump of the present invention connects to a water source tank and connects it to a sloped snowy road where CF falls, with an automatic opening/closing valve for the supply water (- In a water ram pump having separate holes, a curved pipe section is provided at the two ends of the inclined 8g passage, which bends upward in a squelch shape with a short radius of curvature of about 1.5 to 2 times the pipe diameter. , a water hammer (i.e., the water hammer according to the present application) is characterized in that a pumping valve (secondary valve) is provided downstream of the blood vessel, a pressure pumping tank is fully installed, and an automatic opening/closing valve is provided upstream of a part of the curve i8. In order to achieve the second object of the invention, the water hammer of the present invention has a supply water (
- In a water hammer pump that is equipped with an automatic opening/closing valve for secondary water (secondary water) and a separate extraction hole for pumping water (secondary water), a pipe with a short radius of curvature is installed at the tip of the inclined pipe. A bent pipe section that bends upward is provided, a high-pressure water pumping tank equipped with a pumping valve (secondary valve) is provided downstream of the bent pipe section, and a 9dJ on-off valve is provided upstream of the bent pipe section, and this This water hammer is characterized in that an elastic body is fixed to the portion that seats on the valve seat of each door.

Is this invention? A detailed explanation will be given with reference to illustrated embodiments.

FIG. 2 shows lf? of an embodiment of the present invention. Show the front view.

9 is #1 diagonal pipe (-next water 1#n, water IJ/, 1
Feed water (-water) with a lower drop difference than 0 is introduced.

Reference numeral 11 denotes a curved 'U' portion which is formed by smoothly bending the tip of the inclined pipe 9 into a crossel shape, and its radius of curvature is a small value of about 1.5 to 2.0 times the diameter of the inclined pipe 9. be.

A pumping valve (secondary valve) 12 is installed at the tip of the S-shaped pipe section 1, and when the pumping valve P12 is opened, high-pressure pumped water (secondary water) is pumped into the high-pressure tank 13. ) is designed for high pressure applications.

As mentioned above, the value of the radius of curvature of the curve ygti at the tip of the inclined pipe 9 is reduced by the automatic opening/closing valve construction 4 and the pumping valve construction 2.
This is to make the distance between the two valves as small as possible to sharpen the pressure wave that enters the secondary valve due to water hammer.

In addition, work 4 is an automatic opening/closing valve (-next; tP) provided upstream of the curved pipe section 110 in 01, which opens and closes intermittently in accordance with the principle of a known water pump. The automatic opening/closing valve 14 and the pumping valve 12 each have;

Rubber rings (elastic bodies) 15, 16 made of neoprene rubber or the like are adhered to the red portions of the valve seats 18, 19 by baking or the like. 17 is a pedestal.

Next, the effects of the water ram pump configured as described above will be explained.

When the automatic on-off valve 14 suddenly closes during operation of the water hammer, the high-pressure supply water generated in the inclined pipe line 9 continues straight and flows smoothly into the sufficiently short curved pipe part 11i. Just by bending, the pumping valve 12 is suddenly tilted, causing no dynamic loss like that which occurs in conventional water hammer pumps. sent to.

In addition, since the P pumping valve 12 is located at a slightly lower position than the automatic on-off valve 14, when the automatic on-off valve 14 is opened, air temporarily sucked in from there flows around to the pumping water J'P12. This reduces the probability that the pumping valve works 2 and stabilizes the construction idJ.

Furthermore, by providing the comb rings 15 and 16i, the impact noise when the water pumping valve 12 and the automatic opening/closing valve 14 are seated is greatly reduced, and the durability of each unit is also improved.

According to experiments using primary water with a head of about 3.5 m, the water hammer bonder according to the present invention has a sufficiently low impact sound and improved performance compared to conventional water pumps. In areas where the head ratio of the pumped water to the head of the supplied water is approximately 3 to 8 times higher and the flow rate of the pumped water is large, the flow rate of the pumped water increases by approximately 20%, and the maximum pressure reached by the hot water also increases. The pressure has increased from about 8 atm to 15 atm.

Therefore, this research has shown that compared to conventional water ram pumps in which an automatic opening/closing valve is downstream of the pumping valve, the pump has a higher pumping flow rate and maximum pressure, is quieter to operate, is more durable,
This ensures stable operation.

[Brief explanation of drawings]

FIG. 1(&), gx, tb) is a schematic view of the main parts of a conventional water hammer pump, and FIG. 2 is a partially cutaway sectional view of an embodiment of the water hammer pump of the present invention. 9... Inclined lf + W road, Work 0... Water source, Work 1... Bent pipe section, Work 2... Lifting valve, 13... Side, pressure tank, 1
4... Automatic opening/closing valve, 15.16... Pocket, 117
...Mountain frame, 18゜Patent investment Makoto Ito - Same as above - Color Next time Masayoshi Kamiya

Claims (2)

[Claims] (1) In a water hammer pump in which an automatic opening/closing valve for supply water and a pumping water extraction hole are separately provided on an inclined pipe connecting to a water source tank and descending, a short curvature is provided at the tip of the inclined pipe. A curved pipe line that curves upward in the shape of a squirrel with a radius is provided, a high-pressure pumping tank equipped with a hot water valve is provided downstream of the curved W portion, and an automatic on-off valve is provided upstream of the curved U portion fI
:Characteristic water hammer pump. (2) In a water hammer pump, an automatic opening/closing valve for supply water and a pumping water take-out hole are separately provided on the inclined pipe connected to the water source tank and descending, and a short pipe is installed at the tip of the inclined pipe. A curved pipe ffII that bends upward like a pipe with a radius of curvature.
A water hammer is characterized in that a high-pressure water pumping tank equipped with a water pumping valve is provided downstream of the bent pipe section, and an elastic body is completely fixed to the part that seats on the valve seat of each of these valves. pump. At 8'