CN213981358U - A heat medium pump self-flushing double-layer coaxial coil cooler - Google Patents

Abstract

A heat medium pump self-flushing double-layer coaxial coil cooler is characterized in that: it includes an inner layer coil, an outer layer coil, a cooling water inlet pipe, and a cooling water outlet pipe, and the outer layer coil is coaxially sleeved. Set outside the inner coil, there is a gap between the outer wall of the inner coil and the inner wall of the outer coil, the front end of the outer coil is provided with a water inlet, the rear end of the outer coil is provided with a water outlet, and the cooling water inlet pipe is connected to the inner wall of the outer coil. The water inlet is connected, and the cooling water outlet pipe is connected with the water outlet.

Description

A heat medium pump self-flushing double-layer coaxial coil cooler

technical field

The utility model relates to a multistage pump cooler, in particular to a heat medium pump self-flushing double-layer coaxial coil cooler.

Background technique

The flushing of the mechanical seal is the most effective measure to control the temperature and prolong the life of the mechanical seal. The purpose of flushing is to remove heat, reduce seal chamber temperature, prevent liquid film vaporization, improve lubrication conditions, prevent dry running, impurity deposition and air pocket formation, and prevent air from outside the pump from leaking into the pump to act as a seal. The self-flushing pump uses the medium transported by the pump itself to enter the sealing cavity through the small holes on the end face sealing gland, and mix with the medium in the pump, which is called self-flushing.

The pump that needs the self-flushing function has certain requirements for the medium to be transported, and the medium needs to be relatively clean, low in viscosity and low in temperature, generally light oil or clean water. For pumps whose working medium temperature exceeds 80°C, the self-flushing scheme generally uses an external cooler (heat exchanger) to cool the self-flushing pipeline, otherwise the temperature is too high, which will cause the flushing medium to vaporize at the mechanical seal, resulting in dry friction. Damage to mechanical seals, such as flushing schemes of PLAN 21, 23, 41 in API682. The cooler (heat exchanger) has a larger volume, which requires a larger installation space for the entire pump set, which limits its use range.

Utility model content

In order to solve the above-mentioned problems, the utility model provides the following solutions:

A heat medium pump self-flushing double-layer coaxial coil cooler, comprising an inner layer coil, an outer layer coil, a cooling water inlet pipe, and a cooling water outlet pipe, wherein the outer layer coil is coaxially sleeved with the inner layer. Outside the coil, there is a gap between the outer wall of the inner coil and the inner wall of the outer coil, the front end of the outer coil is provided with a water inlet, the rear end of the outer coil is provided with a water outlet, and the cooling water inlet pipe is communicated with the water inlet. The cooling water outlet pipe is communicated with the water outlet.

Further, the front end of the outer layer coil is sleeved with an inlet tee, the opening of the inlet tee located on the same straight line is sleeved outside the inner layer coil, and the other opening of the inlet tee is used as a water inlet and communicates with the cooling water inlet pipe. The rear end of the outer layer coil tube is sleeved with an outlet tee, the opening of the outlet tee located in the same straight line is sleeved outside the inner layer coil tube, and the other opening of the outlet tee serves as a water outlet and communicates with the cooling water outlet pipe.

The self-flushing pipeline adopts the coil method, and the outer layer coil is arranged on the outer layer of the inner layer coil. The two ports of the outer layer coil are sealed by welding or screw plugs. The two ports have a water inlet and a water outlet respectively. Enter the cooler, flow and circulate in the gap between the outer coil and the inner coil, and lead out from the water outlet to form a water-cooled heat dissipation cycle. into the pump flush fluid mechanical seal.

The beneficial effects of the utility model are as follows: 1. The use of the coil type increases the heat dissipation area of the self-flushing pipeline;

2. The outer coil acts as a water-cooling container, and the external cooling water circulates between the inner coil and the outer coil to quickly take away the heat of the cooling liquid in the inner coil, and the cooling rate is not severe at the same time. It prevents the change or interruption of the amount of flushing liquid, and effectively avoids the leakage of the mechanical seal due to the large deformation caused by the temperature difference;

3. Simple and compact structure, small size, good sealing performance, no need for additional auxiliary equipment and site and space requirements, it can be matched with many pump types to achieve rapid cooling requirements of self-flushing medium.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

In the figure: 1. Inner coil; 2. Outer coil; 3. Inlet tee; 4. Outlet tee; 5. Cooling water inlet pipe; 6. Cooling water outlet pipe.

Detailed ways

The present utility model will now be described in further detail in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Example 1: As shown in Figure 1,

A heat medium pump self-flushing double-layer coaxial coil cooler, comprising an inner layer coil 1, an outer layer coil 2, a cooling water inlet pipe 5, and a cooling water outlet pipe 6, and the outer layer coil 2 is coaxial The outer wall of the inner coil 1 and the inner wall of the outer coil 2 have a gap, the front end of the outer coil 2 is provided with a water inlet, and the rear end of the outer coil 1 is provided with a water outlet , the cooling water inlet pipe 5 is communicated with the water inlet, and the cooling water outlet pipe 6 is communicated with the water outlet.

The front end of the outer layer coil 2 is sleeved with an inlet tee 3, the opening of the inlet tee 3 located on the same straight line is sleeved outside the inner layer coil 1, and the other opening of the inlet tee 3 serves as a water inlet and a cooling water inlet. The water pipes 5 are connected; the rear end of the outer layer coil 2 is sleeved with an outlet tee 4, and the opening of the outlet tee 4 located in the same straight line is sleeved outside the inner layer coil 1, and another opening of the outlet tee 4 is used as an outlet. The water port is communicated with the cooling water outlet pipe 6 .

The self-flushing pipeline adopts the coil mode, and the inner layer coil 1 is covered with an outer layer coil 2. The two ports of the outer layer coil 2 are sealed by welding or screw plugs. It enters the cooler from the water inlet, flows and circulates in the gap between the outer coil 2 and the inner coil 1, and is drawn out from the water outlet to form a water-cooled heat dissipation cycle, and the inner coil 1 passes into the flushing liquid in the pump , after water cooling and heat dissipation, it is discharged back to the mechanical seal of the flushing fluid in the pump.

The utility model adopts the coil type to increase the heat dissipation area of the self-flushing pipeline; the outer coil 2 plays the role of a water-cooling container, and the external cooling water circulates between the inner coil 1 and the outer coil 2, quickly It takes away the heat of the cooling liquid in the inner layer coil 1, and at the same time, the cooling range is not severe, which prevents the change or interruption of the flushing liquid volume, and effectively avoids the leakage of the mechanical seal due to the large deformation caused by the temperature difference; the structure is simple and compact, and the volume Small size, good sealing performance, no additional ancillary equipment and site and space requirements are required, and can be matched with many pump types to achieve rapid cooling requirements for self-flushing media.

Finally, it should be noted that the above enumeration is only a specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All deformations that those of ordinary skill in the art can directly derive or associate from the disclosure of the present invention should be considered as the protection scope of the present invention.

Claims (2)

1. The utility model provides a heat medium pump is from double-deck coaxial coil pipe cooler of washing which characterized in that: including inlayer coil pipe, outer coil pipe, cooling water inlet tube, cooling water outlet pipe, outer coaxial cover of coil pipe is established and is had the clearance between inlayer coil pipe outer wall and the outer coil pipe inner wall outside the inlayer coil pipe, the water inlet is seted up to outer coil pipe front end, and the outlet pipe is seted up to outer coil pipe rear end, cooling water inlet tube and water inlet intercommunication, cooling water outlet pipe and delivery port intercommunication.

2. A thermal medium pump self-flushing double-deck coaxial coil cooler as claimed in claim 1, wherein: the front end of the outer layer coil pipe is sleeved with an inlet tee joint, an opening of the inlet tee joint, which is positioned on the same straight line, is sleeved outside the inner layer coil pipe, and the other opening of the inlet tee joint is used as a water inlet and is communicated with a cooling water inlet pipe; the rear end of the outer layer coil pipe is sleeved with an outlet tee joint, an opening of the outlet tee joint, which is positioned on the same straight line, is sleeved outside the inner layer coil pipe, and the other opening of the outlet tee joint is used as a water outlet and is communicated with a cooling water outlet pipe.

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