JPH0683997U - Installation structure of cooling heat exchanger - Google Patents

Abstract

(57) [Summary] [Structure] A positioning member 18 is provided on the bottom of the cooling heat exchanger 11, and a receiving member 19 for receiving the positioning member 18 is provided on the bottom surface of the water tank, and the positioning member 18 and the receiving member 19 are provided. And are formed so as to be engageable with and disengageable from each other in the vertical direction and to be mutually locked in the water flow direction in the water tank.
The fixing member 20 is attached to the upper part of the cooling heat exchanger 11, and a seat member for receiving the fixing member 20 is provided on the inner surface of the water tank so that the fixing member 20 and the seat member can slide in the vertical direction. While being formed, the fixing member and the seat member were connected and fixed by a fastening member. [Effect] Since the positioning member and the receiving member can be joined and separated in the vertical direction, the cooling heat can be removed by simply removing the fastening member and at a water level such that the head of the cooling heat exchanger is exposed above the water surface. The exchange can be attached and detached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an installation structure of a cooling heat exchanger for cooling a diesel engine or a gear reducer in a pump facility or the like.

[0002]

[Prior art]

 Conventionally, in large-scale pump equipment, the discharge channel of the pump is constructed with concrete, and the heat exchange for cooling to cool the diesel engine and gear reducer used to drive the pump is constructed in this discharge channel. Is equipped with a vessel. The structure is, for example, as shown in FIGS. 11 to 12, the discharge water channel 31 has a quadrangular cross-sectional shape, and a pair of left and right cooling heat exchangers 34 are arranged in the recesses 33 provided in both side walls 32 of the discharge water channel 31. The heat exchanger 34 for cooling has a pair of header pipes 35 at the front and rear along the flow direction of the discharge water channel 31, and a plurality of cooling pipes 36 are provided between both header pipes 35. Inside the heat exchanger 34 for cooling, the coolant water is configured to flow zigzag through the respective cooling pipes 36 through the header pipes 35 of both sides. Further, the cooling heat exchanger 34 is fixed to the ceiling portion 38 of the water passage 31 by discharging it with an upper lid 37.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, since the cooling heat exchanger 34 is discharged by the upper lid 37 and fixed to the ceiling 38 of the water channel 31, there is a problem that the lower end becomes a free end and vibrates. When the lower end side is discharged and fixed to the bottom of the water channel 31, it is necessary to discharge all the water in the water channel 31 during maintenance, which causes a troublesome maintenance work.

The present invention solves the above problems, and the presence of a cooling heat exchanger does not affect the total discharge head of the pump, and the cooling heat exchanger can be easily attached and detached during maintenance. It is an object to provide an installation structure of an exchanger.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the installation structure of the cooling heat exchanger of the present invention is such that the pump is installed in an upper open pressure regulating water tank in which the pump outlet is opened on one side and the water channel is opened on the other side. A cooling heat exchanger for cooling the motor of the pump is immersed, a positioning member is provided at the bottom of the cooling heat exchanger, and a receiving member for receiving the positioning material is provided at the bottom of the water tank for positioning. The member and the receiving member are formed in a shape that can be engaged and disengaged in the up and down direction and can be mutually locked in the water flow direction in the water tank, and the fixing member is provided on the upper part of the cooling heat exchanger. A seat member for receiving the fixing member is provided on the base member, the fixing member and the seat member are formed so as to be slidable in the vertical direction, and the fixing member and the seat member are connected and fixed by a fastening member. is there.

[0006]

[Action]

 With the above-mentioned installation structure, the cooling heat exchanger is lowered into the water tank when it is mounted, and the cooling heat exchanger is positioned with respect to the bottom surface of the water tank by the engagement of the positioning member and the receiving member. The seat member is slid and joined, and the fixing member and the seat member are connected and fixed by the fastening member. In this state, the bottom part of the cooling heat exchanger is locked to the bottom surface of the water tank in the water flow direction in the water tank by the engagement of the positioning member and the receiving member, and the upper part of the cooling heat exchanger is fixed to the fixing member by the connecting member. The cooling heat exchanger does not vibrate because it is fixed to the inner surface of the water tank by connecting and fixing the members.

At the time of taking out, the fastening member is removed and the fixing fixation of the fixing member and the seat member is released, and the cooling heat exchanger is lifted outside the water tank. At this time, since the positioning member and the receiving member can be joined and separated in the upward and downward directions, the positioning with respect to the bottom surface of the water tank can be automatically released as the cooling heat exchanger rises. Therefore, it is not necessary to drain all the water in the water tank when taking out and installing the cooling heat exchanger, and at the water level where the head of the cooling heat exchanger is exposed above the water surface, The heat exchanger can be attached and detached.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, a vertical axis type axial flow pump 3 is arranged in a pump pit 2 provided inside the building 1, and a suction side of the axial flow pump 3 communicates with an inflow water channel 4. . In addition, a diesel engine 5 and a compound transmission 6 for driving the axial pump 3 are arranged inside the building 1, and the diesel engine 5 and the compound transmission 6 have a cooling jacket in which a cooling fluid circulates. (Not shown).

The discharge pipe 7 of the axial flow pump 3 has a siphon shape, and has a siphon breaker 8 at 7 a near its top. The discharge port 7b of the discharge pipe 7 opens to one side of the pressure regulating water tank 9 located outdoors, and the opening is located below the lowest water level (LWL) of the pressure regulating water tank 9 and to the other side of the pressure regulating water tank 9. The outflow water channel 10 forming a pipe is open. The pressure regulating water tank 9 has a shape that opens to the atmosphere at the upper opening 9a, and its capacity is set according to the discharge flow rate of the axial flow pump 3.

A cooling heat exchanger 11 is submerged in the pressure regulating water tank 9, and a pipe of the cooling heat exchanger 11 has a cooling jacket (not shown) for the diesel engine 5 and the compound transmission 6. Is in communication with.

As shown in FIGS. 3 to 5, the cooling heat exchanger 11 is composed of a plurality of heat exchange modules 12 arranged in parallel, and each of the heat exchange modules 12 has an inlet 12 a and an outlet 12 b. The cooling pipes are connected via the collecting pipes 13 and 14, and the openings 13a and 14a of the collecting pipes 13 and 14 communicate with the above-mentioned cooling jacket via a circulation pipe (not shown).

In each heat exchange module 12, a plurality of straight pipes 15 are arranged in parallel along the water flow direction A in the pressure regulating water tank 9, and both ends of the adjacent straight pipes 15 are U-shaped bend pipes 16. They are connected to form a serial pipe line. The cooling heat exchanger 11 of the present embodiment has a heat exchange module 12 provided on one side thereof and communicating with a separate system.

As shown in FIGS. 6 to 11, the cooling heat exchanger 11 is a unit in which a plurality of heat exchange modules 12 are integrally connected by a frame 17. A wedge-shaped positioning member 18 is provided on the bottom of the frame 17, and a receiving member 19 for receiving the positioning member 18 is provided on the bottom surface of the pressure regulating water tank 9. The receiving member 19 has a shape corresponding to the wedge shape of the positioning member 18, and the positioning member 18 and the receiving member 19 are vertically engageable and separable, and are locked to each other in the water flow direction in the pressure regulating water tank 9. Fit.

A fixing member 20 is provided on the top of the frame body 17, the tip side of which extends toward the inner side surface of the pressure regulating water tank 9, and a seat member for receiving the fixing member 20 is provided on the inner side surface of the pressure regulating water tank 9. 21 is provided. The fixing member 20 and the seat member 21 are slidable with respect to each other in the vertical direction, and the fixing member 20 and the seat member 21 are connected and fixed by a fastening member 22 such as a bolt.

A slide member 23 is provided in the vertical direction on the inner side surface of the pressure regulating water tank 9 facing the side surface of the cooling heat exchanger 11, and the slide member 23 is provided with a groove portion 23 a having a U-shaped cross section. ing. Further, a guide member 24 that is slidable by engaging with the groove portion 23a of the slide member 23 is provided on the side portion of the frame body 17. Further, a hook 25 for lifting is provided on the upper portion of the frame body 17.

The operation of the above configuration will be described below. The diesel engine 5 drives the axial flow pump 3 via the compound transmission 6 to discharge the water in the inflow water passage 4 to the pressure regulating water tank 9 through the discharge pipe 7. By the way, since the discharge pipe 7 has a siphon shape, the load of the axial flow pump 3 is reduced by the siphon action during the operation period. When the operation is stopped, the vacuum in the discharge pipe 7 is broken by the siphon breaker 8 to prevent the water in the inflow water channel 4 from arbitrarily flowing out to the pressure regulating water tank 9.

The discharge flow of the axial flow pump 3 discharged from the opening 7b of the discharge pipe 7 into the pressure regulating water tank 9 is released under atmospheric pressure in the pressure regulating water tank 9, and normally the highest water level (HWL ) While flowing below the planned water level (NWL), it flows into the outflow channel 10 from the opening on the other side.

On the other hand, a cooling fluid for cooling the diesel engine 5 and the compound transmission 6 is flowing in the cooling heat exchanger 11, and the cooling fluid in the cooling heat exchanger 11 is the one side collecting pipe. 13, the heat is divided into each heat exchange module 12, flows through the series pipes of each heat exchange module 12, and then merges in the collecting pipe 14 on the other side, and then from the cooling heat exchanger 11 to the diesel engine 5 and the composite engine. Return to the cooling jacket of the transmission 6. Therefore, in the pressure regulating water tank 9, the discharged discharge flow of the axial flow pump 3 cools the cooling fluid via the cooling heat exchanger 11.

At this time, since the cooling heat exchanger 11 located in the pressure regulating water tank 9 comes into contact with the discharge flow of the axial flow pump 3 under atmospheric pressure, its presence is in the total discharge head of the axial flow pump 3. It does not become an influencing factor and does not cause an increase in the total discharge head of the axial pump 3 accompanying the installation of the cooling heat exchanger 11 as in the conventional case.

When the cooling heat exchanger 11 is mounted, the cooling heat is supported by being supported by the hooks 25 of the frame 17 and lowered and lowered into the pressure regulating water tank 9, and the guide member 24 is guided by the groove 23 a of the slide member 23. The exchanger 11 is guided to a predetermined position in the pressure regulating water tank 9. Further, the cooling heat exchanger 11 is positioned with respect to the bottom surface of the pressure regulating water tank 9 by the engagement of the positioning member 18 and the receiving member 19, and the fixing member 20 and the seat member 21 are slidably joined together. The fixing member 20 and the seat member 21 are connected and fixed by the fastening member 22.

In this state, the bottom portion of the cooling heat exchanger 11 is locked to the bottom surface of the pressure regulating water tank 9 in the water flow direction in the pressure regulating water tank 9 by the engagement of the positioning member 18 and the receiving member 19. The cooling heat exchanger 11 does not vibrate because its upper part is fixed to the inner side surface of the pressure regulating water tank 9 by connecting and fixing the fixing member 20 and the seat member 21 by the connecting member 22.

At the time of taking out, the fastening member 22 is removed, the fixed fixation of the fixing member 20 and the seat member 21 is released, and the cooling heat exchanger 11 is supported by the hook 25 and lifted outside the pressure regulating water tank 9. It At this time, since the positioning member 18 and the receiving member 19 can be joined and separated in the vertical direction, the positioning of the bottom surface of the pressure regulating water tank 9 can be automatically released as the cooling heat exchanger 11 rises.

Therefore, when taking out and mounting the cooling heat exchanger 11, it is not necessary to drain all the water in the pressure regulating water tank 9, and the head of the cooling heat exchanger 11 is exposed on the water surface. The cooling heat exchanger 11 can be attached and detached at a water level of such a level. In addition, since the slide member 23 guides the guide member 24 when moving up and down, the cooling heat exchanger 11 moves on a predetermined locus without shaking unnecessarily, so that the cooling heat exchanger 11 and the pressure regulating water tank 9 It is possible to prevent the collision with the inner surface of the cooling water and to guide the cooling heat exchanger 11 to a fixed position even under the water surface.

Since the pressure regulating water tank 9 is located outdoors and has a structure in which the upper part is opened, the work of attaching and detaching the cooling heat exchanger 11 can be easily performed, and the cooling heat exchanger 11 can be easily installed. By taking out from the upper opening 9a to the outside of the pressure regulating water tank 9, a large outdoor space can be used as a work space for maintenance, and the work space is not restricted.

[0025]

[Effect of device]

 As described above, according to the present invention, in the cooling heat exchanger, the bottom portion is locked to the bottom surface of the water tank in the water flow direction in the water tank by the engagement of the positioning member and the receiving member, and the upper portion is connected. Since the fixing member and the seat member are connected and fixed to the inner surface of the water tank and installed in the water tank, there is no vibration unlike the conventional case. Also, since the positioning member and the receiving member can be joined and separated in the vertical direction, the cooling heat exchanger can be attached / detached simply by removing the fastening member, and moreover, all the water in the water tank is drained. The heat exchanger for cooling can be attached or detached at a water level such that the head of the heat exchanger for cooling is exposed above the water surface.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of pump equipment showing an embodiment of the present invention.

FIG. 2 is a plan view showing an arrangement state of cooling heat exchangers in the embodiment.

FIG. 3 is a front view of the cooling heat exchanger in the embodiment.

FIG. 4 is a side view of the cooling heat exchanger in the embodiment.

FIG. 5 is a plan view of the cooling heat exchanger in the embodiment.

FIG. 6 is a front view showing a mounting state of a positioning member and a receiving member of the cooling heat exchanger in the embodiment.

FIG. 7 is a side view showing an attached state of a positioning member and a receiving member of the cooling heat exchanger in the embodiment.

FIG. 8 is a front view showing a mounting state of a fixing member and a seat member of the cooling heat exchanger in the embodiment.

FIG. 9 is a side view showing a mounting state of a fixing member and a seat member of the cooling heat exchanger in the embodiment.

FIG. 10 is a plan view showing an engaged state of the slide member and the guide member of the cooling heat exchanger in the embodiment.

FIG. 11 is a sectional view showing an arrangement structure of a cooling heat exchanger in a conventional pump facility.

FIG. 12 is a plan view showing an arrangement structure of a cooling heat exchanger in a conventional pump facility.

[Explanation of symbols]

 3 Axial flow pump 7 Discharge pipe 7b Opening 9 Pressure regulating water tank 10 Outflow water channel 11 Cooling heat exchanger 12 Heat exchange module 15 Straight pipe 18 Positioning member 19 Receiving member 20 Fixing member 21 Seating member 22 Fastening member 23 Sliding member 24 Guide Element

Claims (1)

[Scope of utility model registration request] 1. A cooling heat exchanger for cooling the prime mover of the pump is immersed in an upper opening pressure regulating water tank in which a discharge port of the pump is opened on one side and a water channel is opened on the other side, A positioning member is provided at the bottom of the cooling heat exchanger, and a receiving member for receiving the positioning member is provided at the bottom of the water tank.
The positioning member and the receiving member are formed in a shape that can be engaged and disengaged in the vertical direction and are mutually locked in the water flow direction in the water tank, and the fixing member is provided above the cooling heat exchanger. A seat member for receiving the fixing member is provided on the side surface, the fixing member and the seat member are formed so as to be slidable in the vertical direction, and the fixing member and the seat member are connected and fixed by a fastening member. Cooling heat exchanger installation structure.