CN212930574U

CN212930574U - Fault detection tool

Info

Publication number: CN212930574U
Application number: CN202021720981.4U
Authority: CN
Inventors: 孔得志; 孙欣伟; 王璐; 于毅
Original assignee: Xinsanli Container Service Co ltd
Current assignee: Xinsanli Container Service Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-04-09
Anticipated expiration: 2030-08-17

Abstract

The utility model relates to a refrigerated container unit refrigeration technology field, concretely relates to an instrument that is arranged in refrigerated container unit to adopt among the air injection enthalpy gain formula refrigerating system to examine the side about energy-conserving pipeline part trouble, this instrument includes: the compressor comprises a main pipe, a compressor energy-saving interface sealing end, an energy-saving pipeline interface and a pressure gauge interface; the fault detection tool is additionally arranged in an enhanced vapor injection system, fault detection is carried out by leading out the pressure of a system refrigerant and utilizing the pressure change displayed by a pressure gauge, fault points can be quickly confirmed without replacing an energy-saving expansion valve or an energy-saving electromagnetic valve in the process, and meanwhile, some faults of a compressor can be also judged in an auxiliary mode.

Description

Fault detection tool

Technical Field

The utility model relates to a refrigerated container unit refrigeration technology field, concretely relates to be arranged in refrigerated container unit to adopt among the air injection enthalpy-increasing formula refrigerating system about the instrument of energy-conserving pipeline part trouble side of examining.

Background

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.

An enhanced vapor injection system is a novel refrigeration system consisting of an enhanced vapor injection compressor, an enhanced vapor injection technology and an energy saver, and the combination of the three technologies can provide high-efficiency refrigeration performance. The system is an organic whole, namely, a high-efficiency enhanced vapor injection compressor, an energy saver with an inner balance thermal expansion valve assembly, an electronic expansion valve or an outer balance thermal expansion valve and a high-efficiency heat exchanger jointly form a high-efficiency energy-saving air injection system. Compared with the traditional refrigeration system, the enhanced vapor injection refrigeration system is additionally provided with an economizer, an energy-saving electromagnetic valve and an energy-saving expansion valve, and compared with a common compressor, the compressor is additionally provided with an energy-saving interface, so that the aim of improving the integral freezing and cooling capacity of the unit is fulfilled. However, the system has some defects, on one hand, because the adoption of the enhanced vapor injection technology makes the unit more complicated than the common unit in structure, the damage rate of the components of the unit is always high, and on the other hand, when a high-low pressure gas leakage fault alarm occurs in the running or self-checking process of the compressor, due to the existence of the energy-saving interface, the damage of the energy-saving pipeline or the detection failure or fault caused by the compressor cannot be accurately determined. And after the controller outputs a voltage signal to the energy-saving electromagnetic valve ESV, a coil of the electromagnetic valve generates a magnetic field to attract a valve body of the iron electromagnetic valve, the valve body is opened, a refrigerant flows through an energy-saving expansion valve (EXV), and enters the compressor from an energy-saving interface of the compressor after expansion, and when a certain part of the electromagnetic valve, the expansion valve or the compressor fails, a failure point is difficult to confirm.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fault detection instrument inserts air injection enthalpy gain formula refrigerating system's pipeline with this instrument, opens or closes solenoid valve or unit through the controller, observes the change of manometer pressure and just can accurately deduce the fault point of solenoid valve, expansion valve or compressor.

To achieve the object, the utility model provides a fault detection tool, include: the compressor comprises a main pipe, a compressor energy-saving interface sealing end, an energy-saving pipeline interface and a pressure gauge interface;

one or more embodiments of the present invention have the following advantageous effects:

1) the utility model provides a fault detection instrument installs additional in air injection enthalpy addition system, through drawing system refrigerant pressure, utilizes the pressure variation that the manometer shows to carry out energy-conserving solenoid valve, energy-conserving expansion valve or compressor fault detection, and this process need not to change energy-conserving expansion valve or energy-conserving solenoid valve can confirm the fault point fast, also can assist some troubles of judging the compressor simultaneously.

2) The utility model provides a rational in infrastructure, be convenient for install, dismantle, and install the back gas tightness performance good, excellent in use effect.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a front view of a failure detection tool proposed in embodiment 1;

FIG. 2 is a side view of the failure detection tool proposed in embodiment 1;

FIG. 3 is a top view of the failure detection tool set forth in example 1;

the compressor energy-saving interface sealing structure comprises a fixing pipe 1, a pressure measuring pipe 2, a compressor energy-saving interface sealing end 3, a first hexagonal nut 4, an energy-saving pipeline interface 5, a second hexagonal nut 6, a pressure gauge interface 7, a third hexagonal nut 8 and a sealing ring 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

In order to solve among the enhanced vapor injection formula refrigerating system solenoid valve, expansion valve or certain part of compressor trouble when breaking down, the difficult problem of confirming of fault point, the utility model provides a fault detection instrument, include: the compressor comprises a main pipe, a compressor energy-saving interface sealing end, an energy-saving pipeline interface and a pressure gauge interface;

in one or more embodiments of the present invention, the main pipe is divided into a fixed pipe and a pressure measuring pipe;

in one or more embodiments of the present invention, the fixed tube is welded to the pressure measuring tube;

in one or more embodiments of the present invention, the fixed pipe is a three-way structure, and except for one end connected to the pressure measuring pipe, the two ports are respectively provided with a compressor energy-saving interface sealing end and an energy-saving pipeline interface;

in one or more embodiments of the present invention, the other end of the pressure measuring tube is provided with a pressure gauge interface;

wherein, the effect of fixed pipe is in order to install this fault detection instrument additional in the jet enthalpy increasing system, the fixed pipe meets with the energy-conserving interface of compressor through the energy-conserving interface seal end of compressor that one end set up, meet with energy-conserving pipeline through the energy-conserving pipeline interface that the other end set up, this fault detection instrument just can insert in jet enthalpy increasing formula refrigerating system as energy-conserving pipeline's partly like this, therefore when drawing pressure between energy-conserving pipeline and compressor, link to each other with the combination manometer through the manometer interface on the piezometer pipe, make the registration change that the manometer shows can regard as the foundation of judging the fault point.

The utility model discloses an among one or more embodiments, the sealed end of the energy-conserving interface of compressor, energy-conserving pipe line interface all is provided with the hexagon nut on the pressure gauge interface, and the purpose uses the spanner to provide the support when fastening with the tube coupling, prevents that this instrument from arousing the damage because moment is too big.

In one or more embodiments of the present invention, the sealing end of the compressor energy-saving interface is a circular sealing structure, and a sealing ring is embedded in the interface; the sealing structure is arranged to more accurately lock a fault point in the energy-saving pipeline and eliminate the interference of the compressor when pressure is led out between the energy-saving pipeline and the compressor.

The utility model discloses an in one or more embodiments, the length ratio 2 of fixed pipe and pressure-measuring pipe: 3;

the utility model discloses an in one or more embodiments, the internal diameter ratio of fixed pipe and pressure-measuring pipe 3: 2;

the utility model discloses an in one or more embodiments, the material of fixed pipe is hard metal such as iron, alloy copper, and the material of piezometric tube is soft metal such as brass. The fixing pipe is used for connecting the whole tool into a system, and needs to bear large force for preventing the system from leaking in the jointing process, so that the fixing pipe is thick in inner diameter and made of a hard metal pipe; and the pressure-measuring pipe main function is that the connection combination manometer carries out pressure detection, and general pressure-measuring pipe material is soft metal such as brass, and this is because the interface of connecting the manometer pipe side is too little, if select for use other hard metals, then the welding degree of difficulty is higher, and soft metal sealing effect is better in addition, more is favorable to the sensitive reaction trouble problem of manometer. According to the difference of the required torque of the fixed pipe and the pressure measuring pipe, the length of the fixed pipe and the length of the pressure measuring pipe are set to be 2: 3, the function is better.

Example 1

As shown in fig. 1-3, the utility model provides a fault detection tool, include: the compressor comprises a main pipe, a compressor energy-saving interface sealing end 3, an energy-saving pipeline interface 5 and a pressure gauge interface 7; the main pipe is divided into a fixed pipe 1 and a pressure measuring pipe 2, and the fixed pipe 1 is welded with the pressure measuring pipe 2; the fixed pipe 1 is of a three-way structure, and except for one end connected with the pressure measuring pipe 2, two through holes are respectively provided with a compressor energy-saving interface sealing end 3 and an energy-saving pipeline interface 5; the other end of the pressure measuring pipe 2 is provided with a pressure gauge interface 7;

the compressor energy-saving interface sealing end 3, the energy-saving pipeline interface 5 and the pressure gauge interface 7 are respectively provided with a first hexagonal nut 4, a second hexagonal nut 6 and a third hexagonal nut 8;

the sealing end 3 of the energy-saving interface of the compressor is of a circular closed structure, and a sealing ring 9 is embedded at the sealing end;

the length of the fixed pipe 1 is 10 cm; the length of the pressure measuring pipe 2 is 15 cm;

the inner diameter of the fixed pipe 1 is 0.6cm, and the inner diameter of the pressure measuring pipe 2 is 0.4 cm;

the fixed pipe is made of iron metal, and the piezometric pipe is made of brass.

The use method comprises the following steps:

(1) and (3) dismantling a pipeline from an energy-saving electromagnetic valve to an energy-saving interface of a compressor in the enhanced vapor injection refrigeration system, and clearing impurities in the energy-saving pipeline.

(2) The fault detection tool is arranged in a pipeline from an energy-saving electromagnetic valve to a compressor interface, a compressor energy-saving interface sealing end 3 is connected with an energy-saving interface of the compressor, an energy-saving pipeline interface 5 is connected with an energy-saving pipeline, and a first hexagonal nut 4 and a second hexagonal nut 6 are fastened.

(3) And connecting a pressure gauge interface 7 with the combined pressure gauge, and fastening a third hexagonal nut 8.

(4) Energy-saving pipeline part detection: the unit is operated, the energy-saving electromagnetic valve is manually opened or closed, and the observation is carried out: if the electromagnetic valve is closed after being opened, the pressure changes from high to low in the process, the system is normal, otherwise, the electromagnetic valve or the expansion valve fails.

Detecting a compressor: the compressor suction maintenance valve is closed after the compressor is started, the low-pressure side of the compressor starts to be vacuumized, when the low-pressure reaches-0.5 psi, the compressor is stopped, after the compressor is kept still for 5 minutes, the compressor is started to check whether the degree of a low-pressure sensor rises again, if the degree of the low-pressure sensor rises again, gas on the high-pressure side in the compressor is connected to the low-pressure side in series (the high pressure and the low pressure of the normal compressor are sealed through a valve block).

Wherein, need explain compressor testing process very much, the utility model discloses will behind the fault detection instrument access system, carry out compressor detection time measuring to the accurate detection of the trouble of direct compressor (because the energy-conserving interface of compressor is sealed stifled, can't meet direct detection to the compression), this process is in fact to get rid of the possibility that arouses the compressor trouble, promptly: the air leakage of the energy-saving pipeline causes the air leakage of high pressure and low pressure in the compressor (if the air leakage of the energy-saving pipeline occurs, the phenomenon is similar to the air leakage of the high pressure end and the low pressure end in the compressor), and the sealing of the energy-saving interface of the compressor in the process is also used for eliminating the influence of the detection result of the compressor.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. A fault detection tool, comprising: the compressor comprises a main pipe, a compressor energy-saving interface sealing end, an energy-saving pipeline interface and a pressure gauge interface;

the main pipe is divided into a fixed pipe and a pressure measuring pipe;

the fixed pipe is of a three-way structure, and except for one end connected with the pressure measuring pipe, two ports are respectively provided with a compressor energy-saving interface sealing end and an energy-saving pipeline interface;

and the other end of the pressure measuring pipe is provided with a pressure gauge interface.

2. The fault detection tool of claim 1, wherein the fixed tube is welded to the pressure measurement tube.

3. The fault detection tool of claim 1, wherein hexagonal nuts are disposed on the compressor economizer port seal end, economizer line port and pressure gauge port.

4. The fault detection tool of claim 1, wherein the compressor economizer interface sealing end is a circular closed structure, and a sealing ring is embedded in the sealing end.

5. The fault detection tool of claim 1, wherein the length ratio of the fixed tube to the pressure tube is 2: 3.

6. the fault detection tool of claim 1, wherein the ratio of the inner diameters of the stationary tube to the pressure tube is 3: 2.

7. the fault detection tool of claim 1, wherein the fixed tube is made of a hard metal and the pressure measuring tube is made of a soft metal.