Refrigeration oil level monitoring device for superconducting cable water chilling unit

Abstract

The invention discloses a refrigerant oil level monitoring device for a superconducting cable water chilling unit, which comprises a screw refrigeration compressor body, an observation window is formed in the screw refrigeration compressor body, a plurality of oil outlets are formed in the screw refrigeration compressor body, and the positions of the oil outlets are formed in the inner side of the observation window; the refrigerant oil level monitoring assembly is internally provided with a refrigerant oil level microswitch; the refrigerant oil level monitoring assembly comprises a shell, one end of the shell is provided with a butt joint port, the butt joint port of the shell is assembled and in butt joint with the observation window, the end wall face of the shell is provided with a plurality of screw holes in one-to-one correspondence with the oil outlet holes, and the refrigerant oil level monitoring assembly further comprises a plurality of sealing rods in one-to-one correspondence with the screw holes. By means of the refrigerant oil level monitoring device for the superconducting cable water chilling unit, oil level abnormity of a screw refrigeration compressor can be rapidly processed, and the fault processing efficiency is improved; the structure is simple, and maintenance and repair are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of superconducting cable refrigeration auxiliary monitoring equipment, and in particular to a refrigeration oil level monitoring device for a superconducting cable water cooling unit. Background Art

[0002] In the prior art, the core component of the superconducting cable refrigeration system is the GM refrigerator, and the key component that provides the required circulating cooling water for the GM refrigerator compressor is the screw refrigeration compressor of the water-cooling unit.

[0003] During the daily operation of the equipment, the refrigeration oil plays an important role in lubricating the screw refrigeration compressor and must be continuously monitored. The existing technical defects in troubleshooting the refrigeration oil level micro switch of the superconducting cable water-cooled unit are as follows:

[0004] 1. Long working hours. To handle the compressor refrigerant oil level micro switch failure, the following steps are required: set the refrigerant oil level collection to normally open - close the inlet refrigerant valve (thin tube) - start the water cooling unit - close the outlet refrigerant valve (thick tube) - drain the refrigerant oil - replace the micro switch - add refrigerant oil - restore wiring - restore PLC settings - test run, etc. The whole process takes about 1 day and is equipped with a large number of special tools, which is time-consuming.

[0005] 2. The operation is difficult and requires proficiency in relevant skills to handle. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a refrigeration oil level monitoring device for a superconducting cable water-cooled unit, which can quickly handle oil level abnormalities in a screw refrigeration compressor and improve fault handling efficiency; the structure is streamlined and easy to maintain and repair.

[0007] In order to solve the above technical problems, the present invention provides a refrigeration oil level monitoring device for a superconducting cable water-cooled unit, comprising: a screw refrigeration compressor body, an observation window is provided on the screw refrigeration compressor body, a plurality of oil outlet holes are provided on the screw refrigeration compressor body, and the positions of the plurality of oil outlet holes are provided on the inner side of the observation window; a refrigeration oil level monitoring component detachably connected to the observation window, and a refrigeration oil level micro switch is installed in the refrigeration oil level monitoring component; the refrigeration oil level monitoring component comprises: a shell, the shell is a hollow accommodating cavity structure with a side wall surface enclosing an end wall surface, and one end of the shell is provided with a docking The refrigerant oil level micro switch is detachably installed in the accommodating cavity of the shell, wherein: the docking port of the shell is assembled and docked with the observation window, and a plurality of screw holes corresponding to the plurality of oil outlet holes are opened on the end wall surface of the shell, wherein: it also includes: a plurality of sealing rods installed on the plurality of screw holes, and the plurality of sealing rods correspond to the plurality of screw holes one by one, wherein: the plurality of sealing rods are respectively screwed so that one end of the sealing rod is screwed out of the screw hole, and the other end opposite to the sealing rod is screwed into the oil outlet hole, and the plurality of sealing rods are detached from the shell, and the shell is disassembled to replace the refrigerant oil level micro switch therein and / or collect a small amount of refrigerant oil in the shell.

[0008] There are four sealing rods, and sealing rings are respectively sleeved on opposite ends of the sealing rods.

[0009] The shell is cylindrical, and four sealing rods are evenly arranged in the accommodating cavity.

[0010] The end of the sealing rod is provided with a thread.

[0011] The shell is provided with a through hole for fastening bolts for fastening the shell to the observation window.

[0012] Wherein, an exhaust plug is provided on the shell body, and a sealing member is installed in the exhaust plug.

[0013] The implementation of the refrigeration oil level monitoring device for a superconducting cable water-cooling unit of the present invention has the following beneficial effects: the refrigeration oil level monitoring device for a superconducting cable water-cooling unit comprises: a screw refrigeration compressor body, an observation window is provided on the screw refrigeration compressor body, a plurality of oil outlet holes are provided on the screw refrigeration compressor body, and the positions of the plurality of oil outlet holes are provided on the inner side of the observation window; a refrigeration oil level monitoring component detachably connected to the observation window, a refrigeration oil level micro switch is installed in the refrigeration oil level monitoring component; the refrigeration oil level monitoring component comprises: a shell, the shell is a hollow accommodating cavity structure with a side wall surface enclosing an end wall surface, one end of the shell is provided with a docking interface, and the refrigeration oil level micro switch can be The disassembled installation is in the accommodating cavity of the shell, wherein: the docking port of the shell is assembled and docked with the observation window, and a plurality of screw holes corresponding to the plurality of oil outlet holes are opened on the end wall surface of the shell, wherein: it also includes: a plurality of sealing rods installed on the plurality of screw holes, and the plurality of sealing rods correspond to the screw holes one by one, wherein: the plurality of sealing rods are screwed respectively so that one end of the sealing rod is screwed out of the screw hole, and the other end oppositely is screwed into the oil outlet hole, and the plurality of sealing rods are separated from the shell, and the shell is disassembled to replace the refrigerant oil level microswitch therein and / or collect a small amount of refrigerant oil in the shell, so that the oil level abnormality of the screw refrigeration compressor can be quickly handled and the fault handling efficiency is improved; the structure is streamlined and easy to maintain and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The present invention is a schematic diagram of the overall structure of a refrigeration oil level monitoring device for a superconducting cable water cooling unit according to an embodiment of the present invention.

[0016] Figure 2 The figure is a schematic diagram of the internal structure of a refrigeration oil level monitoring assembly according to an embodiment of the present invention.

[0017] Figure 3 The figure is a schematic cross-sectional structure diagram of a refrigeration oil level monitoring assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 3 FIG. 1 is a first embodiment of a refrigeration oil level monitoring device for a superconducting cable water cooling unit according to the present invention.

[0020] The refrigeration oil level monitoring device for a superconducting cable water-cooled unit in this embodiment comprises: a screw refrigeration compressor body 1, an observation window 11 is provided on the screw refrigeration compressor body 1, a plurality of oil outlet holes (not shown) are provided on the screw refrigeration compressor body 1, and the plurality of oil outlet holes are located on the inner side of the observation window 11; a refrigeration oil level monitoring component 2 detachably connected to the observation window 11, and a refrigeration oil level micro switch 3 is installed in the refrigeration oil level monitoring component 2.

[0021] The refrigeration oil level monitoring assembly 2 in this embodiment includes: a shell 21, the shell 21 is a hollow accommodating cavity structure with a side wall surface 211 surrounding an end wall surface 212, and a docking port 214 is provided at one end of the shell 21. The refrigeration oil level micro switch 3 is detachably installed in the accommodating cavity T of the shell 21, wherein: the docking port 214 of the shell 21 is assembled and docked with the open end of the observation window 11.

[0022] The end wall surface 212 of the shell 21 is provided with a plurality of screw holes 212a corresponding one-to-one with the plurality of oil outlet holes, wherein: it also includes: a plurality of sealing rods 4 installed on the plurality of screw holes 212a, and the plurality of sealing rods 4 correspond one-to-one with the plurality of screw holes 212a, wherein: the plurality of sealing rods 4 are screwed respectively so that one end of the sealing rod 4 is screwed out from the screw hole 212a, and the other end oppositely is screwed into the oil outlet hole, and the plurality of sealing rods 4 are detached from the shell 21, and the shell 21 is disassembled to replace the refrigerant oil level micro switch 3 therein and / or collect a small amount of refrigerant oil in the shell 21.

[0023] In specific implementation, through the detachable connection between the refrigeration oil level monitoring component 2 and the observation window 11, the abnormal oil level condition of the screw refrigeration compressor body 1 can be monitored, and the refrigeration oil level monitoring component 2 can be conveniently disassembled and assembled on the observation window 11 to replace the refrigeration oil level micro switch 3, which can greatly improve the fault handling efficiency.

[0024] The shell 21 is cylindrical, and is a hollow containing structure with a docking port 214 at one end. The shell 21 is composed of a side wall 211 surrounding an end wall 212. The shape and size of the docking port 214 are adapted to the annular observation window 11. The docking port 214 is circumferentially equidistantly provided with a plurality of fastening bolt through holes 214b. The fastening bolts passing through the fastening bolt through holes 214b can fasten the refrigeration oil level monitoring assembly 2 and the observation window 11.

[0025] Furthermore, the refrigeration oil level micro switch 3 is detachably installed in the accommodating cavity T of the shell 21, and the refrigeration oil level micro switch 3 can be quickly replaced after the shell 21 and the observation window 11 are disassembled.

[0026] Furthermore, the end wall surface 212 of the housing 21 is provided with a plurality of screw holes 212a corresponding to the plurality of oil outlet holes, and a plurality of sealing rods 4 are provided in the plurality of screw holes 212a corresponding to each other. The sealing rods 4 are straight rods, and the ends of the opposite sides thereof are respectively provided with threads 40, and the four sealing rods 4 are evenly arranged in the accommodating cavity T. In this way, the oil port arrangement on the end wall surface 212 can be more reasonably arranged.

[0027] During the implementation, the plurality of sealing rods 4 are screwed respectively. In this embodiment, four sealing rods 4 are provided, so that one end of the sealing rod 4 is screwed out from the screw hole 212a, and the other end opposite is screwed into the oil outlet hole, so as to respectively block the plurality of oil outlet holes on the screw refrigeration compressor body 1. At this time, the plurality of sealing rods 4 are separated from the housing 21, and the housing 21 is disassembled to replace the refrigeration oil level micro switch 3 therein and / or collect a small amount of refrigeration oil in the housing 21.

[0028] Preferably, sealing rings 5 ​​are respectively sleeved on opposite ends of the sealing rod 4 .

[0029] Preferably, the housing 21 is provided with an exhaust plug M, and a sealing member is installed in the exhaust plug M.

[0030] When the refrigeration oil level monitoring device for the superconducting cable water-cooled unit in this embodiment is specifically implemented for maintenance, first prepare a small oil barrel and place it at the bottom of the refrigeration oil level monitoring assembly 2, and use an Allen wrench to screw in the four sealing rods 4 until they cannot be twisted. The twisting end side ends of the sealing rods 4 are all screwed into the accommodating cavity T, and the other end of the sealing rods 4 is screwed into the oil outlet hole of the screw refrigeration compressor body 1. The multiple sealing rods 4 respectively block the multiple oil outlet holes on the screw refrigeration compressor body 1. At this time, the multiple sealing rods 4 are separated from the shell 21, and the refrigeration oil level monitoring assembly 2 is dismantled after the small amount of refrigeration oil in the shell 21 has dripped out. When dismantling, it is only necessary to screw out the fastening bolts from the fastening bolt through holes 214b.

[0031] Prepare the refrigeration oil level micro switch 3 for replacement, then install the refrigeration oil level monitoring assembly 2 back to the observation window 11 according to the above reverse steps, and use a wrench to screw out the multiple sealing rods 4 again. Finally, unscrew the top exhaust plug M to exhaust and complete the maintenance. The refrigeration oil level monitoring device for the superconducting cable water cooling unit in this embodiment can realize rapid maintenance without the need to discharge and collect Freon and refrigeration oil, vacuum, etc. The maintenance process is very simple, which greatly saves manpower and material resources.

[0032] The implementation of the present invention provides a refrigeration oil level monitoring device for a superconducting cable water-cooled unit, which has the following beneficial effects: the refrigeration oil level monitoring device for a superconducting cable water-cooled unit comprises: a screw refrigeration compressor body, an observation window is provided on the screw refrigeration compressor body, a plurality of oil outlet holes are provided on the screw refrigeration compressor body, and the positions of the plurality of oil outlet holes are provided on the inner side of the observation window; a refrigeration oil level monitoring component detachably connected to the observation window, a refrigeration oil level micro switch is installed in the refrigeration oil level monitoring component; the refrigeration oil level monitoring component comprises: a shell, the shell is a hollow accommodating cavity structure with a side wall enclosing an end wall, a docking port is provided at one end of the shell, and a refrigeration oil level micro switch is installed in the refrigeration oil level monitoring component. The invention is detachably installed in the accommodating cavity of the shell, wherein: the docking port of the shell is assembled and docked with the observation window, and a plurality of screw holes corresponding to the plurality of oil outlet holes are opened on the end wall surface of the shell, wherein: it also includes: a plurality of sealing rods installed on the plurality of screw holes, and the plurality of sealing rods correspond to the screw holes one by one, wherein: the plurality of sealing rods are respectively screwed so that one end of the sealing rod is screwed out of the screw hole, and the other end is screwed into the oil outlet hole, and the plurality of sealing rods are separated from the shell. The shell is disassembled to replace the refrigerant oil level microswitch therein and / or collect a small amount of refrigerant oil in the shell, so that the oil level abnormality of the screw refrigeration compressor can be quickly handled and the fault handling efficiency is improved; the structure is streamlined and easy to maintain and repair.

Claims

1. A refrigeration oil level monitoring device for a superconducting cable water cooling unit, characterized in that: include: A screw refrigeration compressor body, wherein an observation window is provided on the screw refrigeration compressor body, and a plurality of oil outlet holes are provided on the screw refrigeration compressor body, wherein the plurality of oil outlet holes are provided on the inner side of the observation window; A refrigeration oil level monitoring component detachably connected to the observation window, wherein the refrigeration oil level monitoring component is equipped with a refrigeration oil level micro switch; The refrigeration oil level monitoring assembly comprises: a housing, the housing is a hollow accommodating cavity structure with a side wall surface enclosing an end wall surface, one end of the housing is provided with a docking port, the refrigeration oil level micro switch is detachably mounted in the accommodating cavity of the housing, wherein: The docking port of the housing is assembled and docked with the observation window, and a plurality of screw holes corresponding to the plurality of oil outlet holes are provided on the end wall surface of the housing, wherein: It also includes: a plurality of sealing rods installed on the plurality of screw holes, the plurality of sealing rods corresponding to the plurality of screw holes one by one, wherein: the plurality of sealing rods are respectively screwed so that one end of the sealing rod is screwed out of the screw hole and the other end is screwed into the oil outlet hole, the plurality of sealing rods are detached from the shell, and the shell is disassembled to replace the refrigerant oil level micro switch therein and / or collect a small amount of refrigerant oil in the shell.

2. The refrigeration oil level monitoring device for a superconducting cable water cooling unit according to claim 1, characterized in that: The sealing rods are provided in four numbers, and sealing rings are respectively sleeved on opposite ends of the sealing rods.

3. The refrigeration oil level monitoring device for a superconducting cable water cooling unit according to claim 2, characterized in that: The shell is cylindrical, and four sealing rods are evenly arranged in the accommodating cavity.

4. The refrigeration oil level monitoring device for a superconducting cable water cooling unit according to claim 2, characterized in that: The end of the sealing rod is provided with a thread.

5. The refrigeration oil level monitoring device for a superconducting cable water cooling unit according to claim 1, characterized in that: The shell is provided with a fastening bolt through hole for fastening the shell to the observation window.

6. The refrigeration oil level monitoring device for a superconducting cable water cooling unit according to claim 1, characterized in that: The shell body is provided with an exhaust plug, and a sealing member is installed in the exhaust plug.

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