Portable R1234yf leakage detector

Abstract

The utility model discloses a portable R1234yf leakage detector, and belongs to the technical field of refrigerant monitoring equipment. Which comprises a shell (4), a connector (5) is fixed at the bottom of the shell (4), and is characterized in that mounting holes are formed in the shell (4) in multiple directions, R1234yf concentration sensors (1) are fixed at the mounting holes, and the R1234yf concentration sensors (1) are connected with a PLC (Programmable Logic Controller) (2), an alarm (3) and a power supply (6); and the connector (5) is formed by hinging a plurality of folded plate fixing sheets (501) front and back. The portable R1234yf leakage detector can detect the concentration of R1234yf in the environment and send out a signal to remind an operator to take corresponding measures in time.

Description

Technical Field

[0001] The invention discloses a portable R1234yf leakage detector, belonging to the technical field of refrigerant monitoring equipment. Background Art

[0002] R1234yf (2,3,3,3-tetrafluoropropylene) is a colorless HFO refrigerant gas with extremely low greenhouse gas destructive effects, with a GWP rating of about 1 or lower. As a new alternative to R134a, R1234yf refrigerant has an A2L mild flammability rating, is environmentally friendly and non-toxic, and is considered an environmentally friendly alternative. Compared with R134a, R1234yf has more efficient heat dissipation characteristics and shows broad application prospects.

[0003] However, despite its outstanding environmental performance, R1234yf has some challenges in terms of safety. Since it is colorless and has a faint odor, leaks may not be easily detected. Compared with R134a, R1234yf may cause fire at lower temperatures and begin to release toxic substances before the HF chemical reaches the ignition combustion state, posing a potential risk to passengers and rescue service personnel.

[0004] The German Federal Motor Transport Authority (KBA)'s R1234yf flammability test report clearly pointed out that high concentrations of HF are flammable in the engine area of ​​a car. Especially in small confined spaces such as the interior of a car, inhalation of high concentrations of R1234yf after leakage may cause irritation to the eyes, respiratory tract and skin, and even breathing difficulties or poisoning.

[0005] Therefore, although R1234yf performs well in environmental protection and heat dissipation, it must be used with extreme caution and necessary safety detection measures must be taken to reduce potential safety risks. Therefore, an effective leak detection device is needed to improve safety. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a portable R1234yf leakage detector which is easy to install and can issue a leakage alarm in time.

[0007] The utility model adopts the following technical solution to solve the technical problem: a portable R1234yf leakage detector, comprising a shell, a connector fixed to the bottom of the shell, mounting holes opened in multiple directions of the shell, R1234yf concentration sensors fixed at the mounting holes, the R1234yf concentration sensor connected to a PLC controller, an alarm and a power supply; the connector is composed of a plurality of folding plate fixing plates hinged front and back.

[0008] The portable R1234yf leakage detector is provided with an R1234yf concentration sensor, which can detect the R1234yf concentration in the environment. The R1234yf concentration sensor can be a commercially available chemical sensor or infrared sensor. The R1234yf concentration sensor transmits the detection signal to the PLC controller. The PLC controller includes a signal processing, data acquisition and alarm module, which is used to process the R1234yf concentration data collected by the R1234yf concentration sensor, and send a signal when the R1234yf concentration is detected, and use the alarm to alarm. The connector is composed of multiple folding plate fixing plates hinged front and back, which can change the bending angle to adapt to different installation environments. It can be set in the vehicle body, production workshop or transportation equipment to monitor whether there is R1234yf leakage in the environment in real time.

[0009] The housing of the portable R1234yf leak detector protects the internal components, provides an interface for installation and connection, and has the characteristics of being waterproof, dustproof and corrosion-resistant. The top of the housing is a cover that is fixed by thread connection. The cover is connected to the top of the housing by thread connection, and can be opened to replace the power battery, maintain the internal components, etc.

[0010] In the portable R1234yf leakage detector, the folding plate fixing piece is made of magnetic material. The folding plate fixing piece is made of magnetic material and can be adsorbed on magnetic materials, especially in production workshops, and can be conveniently and quickly adsorbed on various places of equipment and transfer pipelines.

[0011] The portable R1234yf leakage detector has a fixing hole on the folding plate fixing sheet. In some application environments, the detector can be fixed by driving screws into the fixing hole.

[0012] The detector requires a power supply, either a battery or an external power source, to ensure its proper functioning.

[0013] The portable R1234yf leakage detector is powered by a battery. When there is no convenient external power supply, the battery is used as the power supply, and the detector can be set at a desired detection position without being restricted by the power supply.

[0014] The portable R1234yf leakage detector has a power source of a transformer and an external interface. After being connected to the external power source, it can maintain stable operation for a long time.

[0015] When R1234yt leaks are detected, the alarm can send out an audible or visible alarm signal to remind the operator to take appropriate measures. Once R1234yf leaks are detected, the leak detector will sound an alarm to prompt the operator to take timely action.

[0016] Compared with the prior art, the portable R1234yf leakage detector of the utility model has the following beneficial effects: the portable R1234yf leakage detector can detect the R1234yf concentration in the environment, and send out a signal when the R1234yf concentration is detected, and use the alarm to remind the operator to take corresponding measures in time. The connector can change the bending angle to adapt to different installation environments, and can be conveniently installed in the vehicle body, production workshop or transportation equipment to monitor whether R1234yf is leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of a portable R1234yt leakage detector of the utility model.

[0018] Figure 2 It is a top view schematic diagram of a portable R1234yt leakage detector of the utility model.

[0019] Figure 3 The utility model is a schematic diagram of a detector component of a portable R1234yt leakage detector.

[0020] In the figure: 1, R1234yf concentration sensor 2, PLC controller 3, alarm 4, housing 401, cover 402, fixing block 5, connector 501, folding plate fixing piece 502 fixing hole 6, power supply. DETAILED DESCRIPTION

[0021] The utility model is described in detail below by way of examples. Unless otherwise specified, all raw materials used are commercially available.

[0022] See attached Figure 1 , 2 The utility model is a portable R1234yf leakage detector, including a shell 4, which protects the internal components and provides an interface for installation and connection. A connector 5 is fixed to the bottom of the shell 4. The main function of the connector 5 is to fix the shell 4 in the monitoring environment. A fixing block 402 is bonded between the shell 4 and the connector 5. The fixing block 402 supports the shell 4 at a certain height to ensure good air circulation and make the monitoring more sensitive. The connector 5 is composed of a plurality of folding plate fixing pieces 501 hinged front and back, which can be folded and changed in direction to adapt to the installation environment. The folding plate fixing piece 501 is provided with a fixing hole 502, which is fixed in the detection environment by screws, rivets, etc.

[0023] See attached Figure 1 , 3The housing 4 has mounting holes in multiple directions, and the R1234yf concentration sensor 1 is bonded and fixed at the mounting holes. The R1234yf concentration sensor 1 can be a commercially available R1234yf chemical sensor or infrared sensor. The R1234yf concentration sensor 1 is connected to the PLC controller 2, the alarm 3 and the power supply 6 through a line; the top of the housing 4 is a cover 401 fixed by threaded connection, the PLC controller 2 is bonded and fixed to the inner side of the cover 401, and the alarm 3 is bonded and fixed to the outer side of the cover 401. The power supply 6 is a battery, which is bonded and fixed to the bottom of the housing 4.

[0024] Other implementations: The basic structure and connection relationship are the same as above and attached Figures 1 to 3 As shown, the difference is that the folding plate fixing piece 501 is made of magnetic material and can be conveniently fixed on the magnetic material device. The power supply 6 is a transformer and is provided with an external interface, which is connected to an external power supply through a power line.

[0025] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A portable R1234yf leakage detector, comprising a housing (4), a connector (5) being fixed to the bottom of the housing (4), characterized in that: The housing (4) has mounting holes in multiple directions, and an R1234yf concentration sensor (1) is fixed to the mounting hole. The R1234yf concentration sensor (1) is connected to a PLC controller (2), an alarm (3) and a power supply (6); the connector (5) is composed of a plurality of folding plate fixing plates (501) hingedly connected front and back.

2. A portable R1234yf leak detector according to claim 1, characterized in that: The top of the shell (4) is a sealing cover (401) that is fixed by means of threads.

3. A portable R1234yf leak detector according to claim 1, characterized in that: The folding plate fixing piece (501) is made of magnetic material.

4. A portable R1234yf leak detector according to claim 1, characterized in that: The folding plate fixing piece (501) is provided with a fixing hole (502).

5. A portable R1234yf leak detector according to claim 1, characterized in that: The power source (6) is a battery.

6. A portable R1234yf leak detector according to claim 1, characterized in that: The power supply (6) is a transformer and is provided with an external interface.

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