CN221145293U - Sealing structure of heat pump rectifying compressor - Google Patents

Abstract

The utility model relates to the technical field of heat pump rectification, in particular to a sealing structure of a heat pump rectification compressor; including sealing mechanism, sealing mechanism includes gear box, oil blanket, quick-witted seal holder, pressure-bearing casing and mechanical seal tooth case side oil return opening, and the oil blanket sets up in the below of quick-witted seal holder, and quick-witted seal holder sets up in the below of gear box, and pressure-bearing casing sets up the side at quick-witted seal holder, and mechanical seal tooth case side oil return opening is linked together with the gear box, has solved traditional mechanical seal through above-mentioned setting and can lead to the casing to drive mechanical seal drunkenness when being heated and expanded, influences sealed effect, traditional mechanical seal tip and atmosphere switch-on, the problem that the unavoidable sealed oil of having leaked.

Description

Sealing structure of heat pump rectifying compressor

Technical Field

The utility model relates to the technical field of heat pump rectification, in particular to a seal structure of a heat pump rectification compressor.

Background

In order to take out heat from the tower top condenser with lower temperature and send the heat to the tower kettle reboiler with higher temperature, the outside is required to apply work to the rectification system, which is equivalent to sending the heat from the tower top with lower temperature to the tower kettle with higher temperature by a pump or a compressor, thus combining the rectification tower and the refrigeration cycle to form the heat pump rectification system, and the connection of each device can cause leakage after long-time use and can not reach a sealing state.

However, the traditional mechanical seal is arranged on the pressure-bearing shell or the connecting plate, which can lead the shell to drive the mechanical seal to move when being heated and expanded, finally affecting the sealing effect of the mechanical seal.

Disclosure of utility model

The utility model aims to provide a sealing structure of a heat pump rectifying compressor, which aims to solve the problems that in the prior art, a traditional mechanical seal is arranged on a pressure-bearing shell or a connecting plate, so that the shell drives the mechanical seal to move when being heated and expanded, and finally the sealing effect of the mechanical seal is affected.

In order to achieve the above purpose, the heat pump rectifying compressor seal structure comprises a sealing mechanism, wherein the sealing mechanism comprises a gear box, an oil seal, a machine seal seat, a pressure-bearing shell and a mechanical seal gear box side oil return port, the oil seal is arranged below the machine seal seat, the machine seal seat is arranged below the gear box, the pressure-bearing shell is arranged on the side face of the machine seal seat, and the mechanical seal gear box side oil return port is communicated with the gear box.

The sealing mechanism further comprises a mechanical sealing element, wherein the mechanical sealing element is arranged below the mechanical sealing seat and on the side face of the gear box.

The mechanical seal seat is provided with a step, and the step is matched with the pressure-bearing shell.

The gear box is provided with a mechanical seal oil inlet and a mechanical seal oil outlet, and the mechanical seal oil inlet and the mechanical seal oil outlet are connected with each other and matched with each other.

The gear box is further provided with a mechanical sealing medium side oil return port, and the mechanical sealing medium side oil return port is matched with the mechanical seal.

According to the heat pump rectification compressor sealing structure, the mechanical sealing piece is arranged, the sealing performance of equipment is improved, and sealing oil is collected and circulated through the mechanical sealing oil inlet and the mechanical sealing oil outlet, so that the technical problem that a small amount of sealing oil is inevitably leaked out at the shaft end due to the fact that the traditional mechanical sealing is arranged on a pressure-bearing shell or a connecting plate, the shell drives the mechanical sealing to move when being heated and expanded, and finally the sealing effect of the mechanical sealing is affected is solved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a partial structural sectional view of a heat pump rectifying compressor sealing structure of the present utility model.

Fig. 2 is a schematic partial structure view of a sealing structure of a heat pump rectifying compressor of the present utility model.

1-Gear box, 2-oil seal, 3-machine seal seat, 4-mechanical seal, 5-pressure-bearing shell, 6-mechanical seal oil inlet, 7-mechanical seal oil outlet, 8-mechanical seal medium side oil return port, 9-mechanical seal gear box side oil return port.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1 to 2, fig. 1 is a partial structural cross-sectional view of a sealing structure of a heat pump rectifying compressor according to the present utility model, and fig. 2 is a partial structural schematic view of a sealing structure of a heat pump rectifying compressor according to the present utility model.

The utility model provides a sealing structure of a heat pump rectification compressor, which comprises a sealing mechanism, wherein the sealing mechanism comprises a gear box 1, an oil seal 2, a mechanical seal seat 3, a pressure-bearing shell 5 and a mechanical seal gearbox side oil return port 9, the oil seal 2 is arranged below the mechanical seal seat 3, the mechanical seal seat 3 is arranged below the gear box 1, the pressure-bearing shell 5 is arranged on the side surface of the mechanical seal seat 3, and the mechanical seal gearbox side oil return port 9 is communicated with the gear box 1.

In this embodiment, through the arrangement of the oil seal 2, the oil seal 2 plays a role in blocking most of the lubricating oil conveyed by the gear box 1, and guiding the lubricating oil back to the oil tank through the mechanical seal gear box side oil return port 9, and the mechanical seal seat 3 and the pressure-bearing shell 5 are mutually matched, so that the sealing effect is prevented from being reduced due to the thermal expansion of the pressure-bearing shell 5.

Further, the sealing mechanism further comprises a mechanical seal 4, the mechanical seal 4 being arranged below the mechanical seal seat 3 and at the side of the gearbox 1.

In this embodiment, by providing the mechanical seal 4, the mechanical seal 4 and the oil seal 2 cooperate with each other, so as to improve the sealing effect of the device.

Further, the mechanical seal seat 3 is provided with a step, and the step is matched with the pressure-bearing shell 5.

In this embodiment, through the step, the step has the effect of enabling the mechanical seal seat 3 to leave a heat dissipation gap with the pressure-bearing housing 5, preventing heat from radiating to the mechanical seal seat 3 to cause deformation of the mechanical seal seat 3, and the gap also reserves an expansion space for thermal expansion of the pressure-bearing housing 5, preventing axial displacement of the pressure-bearing housing 5 from propping up against the mechanical seal seat 3, and avoiding the reduction or even damage of the sealing effect of the mechanical seal 4 caused by thermal expansion of the pressure-bearing housing 5.

Further, the gear box 1 is provided with a mechanical seal oil inlet 6 and a mechanical seal oil outlet 7, and the mechanical seal oil inlet 6 and the mechanical seal oil outlet 7 are connected with each other and are matched with the mechanical seal 4.

In this embodiment, by the arrangement of the mechanical seal oil inlet 6 and the mechanical seal oil outlet 7, the mechanical seal oil inlet 6 and the mechanical seal oil outlet 7 are connected to each other so as to perform a function of introducing seal oil through the mechanical seal oil inlet 6 and discharging the seal oil through the mechanical seal oil outlet 7.

Further, the gear box 1 is also provided with a mechanical sealing medium side oil return port 8, and the mechanical sealing medium side oil return port 8 is matched with the mechanical seal 4.

In the present embodiment, by providing the mechanical seal medium side oil return port 8, the mechanical seal medium side oil return port 8 plays a role of discharging the medium side oil return through the mechanical seal medium side oil return port 8, and the non-medium side oil return port can discharge through the mechanical seal gear box side oil return port 9.

In this embodiment, the medium-side oil return, the non-medium-side oil return and the sealing oil are circularly collected through the mechanical seal gear box-side oil return port, the mechanical seal oil inlet 6, the mechanical seal oil outlet 7 and the mechanical seal medium-side oil return port 8, so as to realize oil path circulation, thereby realizing '0 leakage' of the heat pump rectifying compressor, avoiding oil and medium waste, prolonging the service life of the mechanical seal, and further prolonging the service life of the heat pump rectifying compressor

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims (5)

1. A sealing structure of a heat pump rectification compressor is characterized in that,

Comprises a sealing mechanism;

The sealing mechanism comprises a gear box, an oil seal, a machine seal seat, a pressure-bearing shell and a mechanical seal gear box side oil return port, wherein the oil seal is arranged below the machine seal seat, the machine seal seat is arranged below the gear box, the pressure-bearing shell is arranged on the side surface of the machine seal seat, and the mechanical seal gear box side oil return port is communicated with the gear box.

2. The heat pump rectifier compressor seal structure of claim 1,

The sealing mechanism further comprises a mechanical seal arranged below the mechanical seal seat and on the side face of the gear box.

3. A heat pump rectifier compressor seal structure as in claim 2, wherein,

The mechanical seal seat is provided with a step, and the step is matched with the pressure-bearing shell.

4. A heat pump rectifier compressor seal structure as in claim 3, wherein,

The gear box is provided with a mechanical seal oil inlet and a mechanical seal oil outlet, and the mechanical seal oil inlet and the mechanical seal oil outlet are connected with each other and matched with each other.

5. The heat pump rectifier compressor seal structure of claim 4,

The gear box is also provided with a mechanical seal medium side oil return port, and the mechanical seal medium side oil return port is matched with the mechanical seal.