JPS6140948Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a pump discharge short pipe with a cooler provided with a cooler for an engine device which is a rotational drive source of the pump.

Conventionally, this type of pump discharge short pipe with a cooler was
For example, as shown in FIG. 1, a cooled pipe 5', which is a cooler 5 of an engine device 4 that drives the pump 1, is disposed in a short pipe 3 interposed in a discharge pipe 2 of a pump 1. The coolant whose temperature has increased through the engine device 4 is guided to the pipe 5' to be cooled, and is cooled by the liquid flowing inside the discharge pipe 2. However, this type of cooling device in the pump discharge short pipe 3 with a cooler only provides a cooler 5 in the short pipe 3, and the flow rate in the discharge pipe 2 increases, causing the flow rate in the pipe to increase. When the flow increases, for example, the pipe 5' to be cooled may vibrate due to the flow, and in severe cases, there is a fear that the pipe 5' to be cooled may be damaged. In addition, in this type of pump discharge short pipe with a cooler, it is difficult to assemble or disassemble the cooled pipe 5' to the short pipe 3. , the discharge pipe 2 of the pump 1 had to be removed, making maintenance and inspection time-consuming.

The present invention was developed in view of the above circumstances, and its purpose is to reduce the vibration caused by the fluid flowing through the discharge pipe by reducing the vibration of the cooler installed in the short pipe interposed in the discharge pipe. The present invention provides a pump discharge short pipe with a cooler that can prevent this.

In order to achieve the above object, the present invention is characterized by the following configuration. That is, the present invention provides a cooler for the engine device that drives the pump in the discharge pipe of the pump.
The disadvantage of inducing vibrations in the cooler due to the fluid flowing through the discharge pipe has been resolved by providing an umbrella-shaped diverter guide on the upstream side of the cooler and within the short pipe. Even in cases where vibrations are induced, the flow that induces vibrations is not allowed to pass through the cooler to avoid inducing vibrations.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

10 in the figure is a discharge pipe 11 of a pump (not shown)
It is a short pipe installed in the This short tube 10 is provided with a cooler 13 that can be attached to and removed from the short tube 10 via a lid 12 . That is, the short pipe 10 is provided with an opening flange portion 10a on the upper surface, and a mounting flange portion 12a is provided on the outer edge of the lid body 12 corresponding to the opening flange portion 10a, and a fixing device (not shown) is provided on the outer edge of the lid body 12. The lid body 12 can be attached to and detached from the short tube 10 via. A cooler 13 that is housed vertically within the short tube 10 is provided on the lid 12 . This cooler 13 includes a frame body 14 a lid body 1
A cooled pipe 1 is fixed to the frame body 14 and guides the cooling water whose temperature has increased after passing through the engine device to the frame body 14.
A cooling water inlet pipe 16 is provided at an exposed portion of the lid 12 for supplying and extracting cooling water to the pipe 15 to be cooled. and a cooling water outlet pipe 17 are installed through a water sealing device 18. Note that the short pipe 10 has flange portions 11 at both ends of the discharge pipe 11.
Between a and 11a, the both end flange portions 11a and 1
It can be attached via flange portions 10b, 10b corresponding to 1a.

Then, on the upstream side of the cooler 13 and the short pipe 1
Inside the cooler 13, an umbrella-shaped diverting guide 21 is fixedly installed via a support plate 22 to divert the flowing fluid mainly around the outer periphery of the cooler 13. This diversion guide 2
1 has a hemispherical part 21a having a predetermined thickness along the direction of fluid flow, and an appropriate number of through holes 21b are formed in this hemispherical part 21a.
The discharge fluid from the pump directly passes through the cooler 13 as well.

In the figure, reference numeral 23 denotes a detent guide that is fixed to the inner surface of the short pipe 10 and abuts the frame 14 of the cooler 13 in a direction opposite to the discharged fluid.

With this configuration, the discharged fluid discharged from the pump is mainly diverted between the outer periphery of the cooler 13 and the inner surface of the short pipe 10 in a direction perpendicular to the flow of the discharged fluid by the flow dividing guide 21, and is cooled. It is possible to prevent a large amount of discharged fluid from directly passing through the container 13, and vibration of the cooler 13 due to fluid movement is prevented. In addition, the through hole 21b of the guide 21
By providing this, the cooling effect can be improved by the discharge fluid slightly flowing into the cooler 13 through the through hole 21b. Furthermore, since the cooler 13 is made removable from the short tube 10 via the lid 12, there is no need to remove the short tube 10 itself, in which the cooler 13 is housed vertically, from between the discharge tubes 11, and the cooler 13 can be assembled and disassembled, and maintenance and inspection are not time consuming.

It should be noted that the present invention is not limited to the above embodiment, but may be configured such that a removable screen is provided on the upstream end face of the short pipe 10. In this case, the cooler can be used without reducing the cooling effect even if foreign matter is present in the discharged fluid.

As explained above, the pump discharge short pipe with a cooler of the present invention has a short pipe interposed in the discharge pipe of the pump, and the cooler of the engine device, which is the rotational drive source of the pump, is connected to the short pipe with a lid. Provided to be removable via the
Since an umbrella-shaped branching guide is provided in the short pipe on the upstream side of the cooler, the discharge fluid discharged from the pump is directed between the outer periphery of the cooler and the inner surface of the short pipe in a direction perpendicular to the flow of the discharged fluid. During this time, the flow is mainly diverted, and it is possible to prevent a large amount of discharged fluid from directly passing through, which would induce vibrations in the cooler, thereby preventing the generation of vibrations in the conventional cooler.

In addition, compared to the conventional discharge pipe (or a short pipe inserted in the discharge pipe) in which only a cooler is provided, the turbulent flow of the discharge fluid that has passed through the cooler is more orderly and turbulent. It has the advantage of low flow loss due to good flow convergence.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional embodiment, Figs. 2 and 3 show an embodiment of the present invention, Fig. 2 is a side sectional view showing the main part, and Fig. 3 is a sectional view showing the main part. 4 is a front view, and FIG. 4 is a rear view. 10...Short pipe, 11...Discharge pipe, 12...Lid, 13...Cooler, 21...Diversion guide.

Claims (1)

[Scope of utility model registration request] A short pipe is interposed in the discharge pipe of the pump, and a cooler of the engine device, which is the rotational drive source of the pump, is installed in this short pipe in a removable manner through a lid, and inside the short pipe on the upstream side of the cooler. A pump discharge short pipe with a cooler, characterized in that an umbrella-shaped branch guide is provided at the bottom.