CN219244915U - Leak detection device applied to diaphragm compressor - Google Patents

Abstract

The application provides a be applied to diaphragm compressor's leak hunting device, including the gas tray, the food tray is installed to the bottom of gas tray, install the diaphragm between gas tray and the food tray, first connecting pipe is installed to the leak hunting point of gas tray, first check valve is installed to the internally mounted of first connecting pipe, the second connecting pipe is installed to the leak hunting point of food tray, the internally mounted of second connecting pipe has the manometer, the internally mounted of second connecting pipe has the second check valve, the end of first connecting pipe is linked together through the tee bend with the end of second connecting pipe, the discharge pipe is installed to the tee bend export, the attach fitting is installed to the end of discharge pipe, fifth connecting pipe is installed to attach fitting's first interface, pressure transmitter is installed to fifth connecting pipe's end, the third connecting pipe is installed to attach fitting's second interface, the internally mounted of third connecting pipe has the third check valve. The leak detection device applied to the diaphragm compressor, provided by the application, is reasonable in structure and low in price compared with a conventional leak detection device.

Description

Leak detection device applied to diaphragm compressor

Technical Field

The utility model belongs to the field of diaphragm compressors, and particularly relates to a leak detection device applied to a diaphragm compressor.

Background

The diaphragm type hydrogen compressor is a main hydrogen compressor technical route in the market, and accounts for more than 90% of market share, while the safety problem of the diaphragm type hydrogen compressor, namely the leakage and emptying problems after the diaphragm seal is slightly leaked and the sealing structure is damaged, is an important subject faced by each manufacturer, because the structural form of the diaphragm type hydrogen compressor, the isolation seals (oil side and gas side) on the two sides of the diaphragm are generally compacted by corresponding elastic sealing rings and sealed by 2-4 layers of sealing rings according to different conditions of each manufacturer, the form can have tiny leakage far below the safety concentration for a long time during the production operation of equipment, and a set of device for rapidly detecting and taking emptying measures is needed once the condition of the sealing structure damage occurs.

At present, two common technologies are mainly adopted in the market, one is that a micro-leakage valve technology is adopted, micro-leakage valves are arranged on two paths of leakage detection pipelines of an oil disc and an air disc, micro-leakage generated on two sides of a diaphragm during normal operation of equipment is directly discharged into air through the micro-leakage valves on the pipelines, at the moment, a leakage detection device has no pressure alarm, when the diaphragm is sealed to be damaged or fails to leak, the micro-leakage valves still discharge trace gas, and most of the gas enters a venting pipeline after being sent to an alarm through the micro-leakage valves and the pressure transmission. The method has a complex structure, and meanwhile, oil disc leakage/gas disc leakage cannot be accurately judged, because the micro-leakage valve is discharged on site for a long time, high-pressure gas is easy to gather, and certain potential safety hazards exist; the other adopts the mode of singly detecting leakage of the gas disc and the oil disc, namely one side of the gas disc is connected with one leakage detection pipeline, the pressure transmission alarm is connected with the gas disc, then the gas disc is connected with the pressure transmission alarm, the gas disc is connected with the gas disc, the gas disc is separated from the gas disc, and the gas disc leakage can be distinguished, but the pipeline of the hydrogen press is complex, particularly the pipeline of the skid-mounted hydrogen press is very expensive, and one pipeline and the instrument are arranged in many ways.

Disclosure of Invention

The application provides a leak detection device applied to a diaphragm compressor aiming at the technical problems in the prior art.

In order to solve the technical problems, the utility model comprises an air tray, an oil pan is arranged at the bottom of the air tray, a diaphragm is arranged between the air tray and the oil pan, a first connecting pipe is arranged at a leak detection point of the air tray, a first check valve is arranged in the first connecting pipe, a second connecting pipe is arranged at a leak detection point of the oil pan, a pressure gauge is arranged in the second connecting pipe, a second check valve is arranged in the second connecting pipe, the tail end of the first connecting pipe is communicated with the tail end of the second connecting pipe through a tee joint, a discharge pipe is arranged at an outlet of the tee joint, a connecting joint is arranged at the tail end of the discharge pipe, a fifth connecting pipe is arranged at a first interface of the connecting joint, a pressure transmitter is arranged at the tail end of the fifth connecting pipe, a third connecting pipe is arranged at a second interface of the connecting joint, and a third check valve is arranged in the third connecting pipe.

Optionally, the first check valve is a 0.5Bar check valve.

Optionally, the pressure gauge is positioned intermediate the oil pan and a second check valve, the second check valve being a 0.5Bar check valve.

Optionally, an alarm mechanism is installed inside the pressure transmitter, and the alarm mechanism comprises a buzzer, an alarm lamp and a signal transmitting sensor.

Optionally, the third check valve is a 6Bar check valve.

Optionally, a fourth connecting pipe is installed at the third interface of the connecting joint, and a valve is installed at the tail end of the fourth connecting pipe.

Compared with the prior art, the utility model has the beneficial effects that:

by the device, when in use, a user can observe the micro-leakage condition in real time and timely detect abnormal leakage, and meanwhile, a reliable basis is provided for finding out the leakage reason and indicating the leakage position; the cost advantage is obvious, because the hydrogen reacts with the conventional metal to generate hydrogen embrittlement, the matched pipeline and the instrument are made of stainless steel alloy materials, and the manufacturing cost is high, so that the simple and effective realization of the preset function for the pipeline and the instrument configuration of the hydrogen press is a powerful guarantee of the localization advantage; the safety is high, no micro leakage is generated in the whole pipeline, and particularly, gas aggregation can not be caused for prying equipment, and the leakage part is rapidly emptied through the emptying pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, 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 schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the whole structure of the present utility model;

FIG. 3 is a cross-sectional view of the internal structure of the present utility model;

fig. 4 is a front view of the overall structure of the present utility model.

The symbol marks in the figures illustrate:

1. an air tray; 2. an oil pan; 3. a diaphragm; 4. a first connection pipe; 5. a first check valve; 6. a second connection pipe; 7. a pressure gauge; 8. a second check valve; 9. a tee joint; 10. a connection joint; 11. a pressure transmitter; 12. a third connection pipe; 13. a third check valve; 14. a fourth connection pipe; 15. and a fifth connecting pipe.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Referring to fig. 1 to 4, a leak detection device for a diaphragm compressor according to an embodiment of the present application will now be described.

The utility model provides a leak detection device applied to a diaphragm compressor, which comprises a gas disc 1, wherein an oil disc 2 is arranged at the bottom of the gas disc 1, a diaphragm 3 is arranged between the gas disc 1 and the oil disc 2, a first connecting pipe 4 is arranged at a leak detection point of the gas disc 1, a first check valve 5 is arranged in the first connecting pipe 4, and the first check valve 5 is a 0.5Bar check valve; the second connecting pipe 6 is installed to the leak hunting point of the food tray 2, and the internally mounted of second connecting pipe 6 has manometer 7, and internally mounted of second connecting pipe 6 has second check valve 8, and the position of manometer 7 is in the intermediate position of food tray 2 and second check valve 8.

The second check valve 8 is a 0.5Bar check valve, and has the function of generating micro leakage when the second check valve is in normal operation, the second connecting pipe 6 is judged to be in a normal state under the condition that the pressure of 0.5Bar is not reached, the system does not react, and micro leakage medium is accumulated in front part pipelines of the first check valve 5 and the second check valve 8; when the pressure gradually increases above 0.5bar, the first check valve 5 and the second check valve 8 open and the end of the first connection pipe 4 and the end of the second connection pipe 6 communicate through the tee 9.

The outlet of tee joint 9 installs the discharge pipe, the end-to-end connection of discharge pipe installs coupling 10, coupling 10's first interface installs fifth connecting pipe 15, pressure transmitter 11 is installed to the end of fifth connecting pipe 15, after first check valve 5 and second check valve 8 are opened, first connecting pipe 4 and second connecting pipe 6 are through tee joint 9 back reaction on pressure transmitter 11 this moment, pressure transmitter 11 sets for 6Bar pressure and is alarm pressure, when pressure transmitter 11 detects that the pipeline is in excess of 6Bar pressure, send out the alarm, coupling 10's second interface installs third connecting pipe 12, third connecting pipe 12 is the blow-down pipe, the internally mounted of third connecting pipe 12 has third check valve 13, third check valve 13 is 6Bar check valve, when unusual leakage takes place, pressure transmitter 11 sends out the third check valve 13 on the alarm blow-down line and is 6Bar check valve, at this moment the blow-down line is opened, the gas of leaking is discharged outside through the blow-down line.

Further, an alarm mechanism is installed in the pressure transmitter 11, and the alarm mechanism comprises a buzzer, an alarm lamp and a signal transmitting sensor, so that a user can be reminded that the pressure in the pipeline exceeds a specified value.

Further, the third port of the connector 10 is provided with a fourth connecting pipe 14, the fourth pipe 14 is a user exhaust pipe, the end of the fourth connecting pipe 14 is provided with a valve, when the pressure is maintained between 0.5bar and 6bar, the pressure is determined to be slightly leaked and accumulated, no alarm is generated at this time, the slightly exposed amount is continuously accumulated, and a user can periodically open the valve at the user exhaust port according to the situation to remove the accumulated medium from the prying.

The working principle of the utility model is as follows:

according to the utility model, two pipelines are respectively led out through the leak detection points of the gas disc and the oil disc, a visual pressure gauge is arranged on the oil disc side pipeline, a 0.5Bar check valve is arranged behind the pressure gauge, the gas disc side pipeline is not provided with the pressure gauge, but the same 0.5Bar check valve is arranged, so that micro leakage generated during normal operation is judged to be in a normal state under the pressure of less than 0.5Bar, the system does not react, and micro leakage medium is accumulated in the pipeline in the front of the check valve; when the pressure gradually rises to exceed 0.5bar, the check valve is opened, at the moment, the gas pipeline and the oil pipeline are combined through the tee joint and then react on the pressure transmitter, the pressure transmitter sets the pressure of 6bar as alarm pressure, namely, when abnormal leakage occurs, the transmitter sends out an alarm, the check valve on the blow-down pipeline is also set to be 6bar, at the moment, the blow-down pipeline is opened, and leaked gas is discharged outside the pry through the blow-down pipeline; when the pressure is maintained between 0.5bar and 6bar, the pressure is judged to be slightly leaked and accumulated, no alarm is generated at the moment, the slightly exposed amount is continuously accumulated, and a valve at a user discharge port can be opened by a customer periodically according to the situation, so that accumulated media are discharged outside the pry.

When abnormal leakage occurs, the emptying action is rapidly responded, the pressure transmitter alarms, whether the pressure value of the oil way pressure gauge is consistent with the pressure transmitter value or not is observed, namely, oil pan side leakage is judged when the pressure value is consistent, and gas pan side leakage is judged when the pressure value of the pressure gauge is smaller than the pressure transmitter value.

In the description of the present utility model, it should be understood that the directions or positional relationships such as the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (6)

1. The utility model provides a leak hunting device for diaphragm compressor, includes gas dish (1), its characterized in that: the oil pan (2) is installed to the bottom of gas tray (1), install diaphragm (3) between gas tray (1) and oil pan (2), first connecting pipe (4) are installed to the leak hunting point of gas tray (1), first check valve (5) are installed to the internally mounted of first connecting pipe (4), second connecting pipe (6) are installed to the leak hunting point of oil pan (2), internally mounted of second connecting pipe (6) has manometer (7), internally mounted of second connecting pipe (6) has second check valve (8), the end of first connecting pipe (4) is linked together through tee bend (9) with the end of second connecting pipe (6), the discharge pipe is installed to the export of tee bend (9), attach fitting (10) are installed to the end of discharge pipe, fifth connecting pipe (15) are installed to the first interface of attach fitting (10), pressure transmitter (11) are installed to the end of fifth connecting pipe (15), third connecting pipe (12) are installed to the second interface of attach fitting (10), third connecting pipe (12) are installed to the end of third connecting pipe (13).

2. A leak detection apparatus for a diaphragm compressor as defined in claim 1, wherein: the first check valve (5) is a 0.5Bar check valve.

3. A leak detection apparatus for a diaphragm compressor as defined in claim 1, wherein: the position of the pressure gauge (7) is in the middle position of the oil pan (2) and the second check valve (8), and the second check valve (8) is a 0.5Bar check valve.

4. A leak detection apparatus for a diaphragm compressor as defined in claim 1, wherein: an alarm mechanism is arranged in the pressure transmitter (11), and comprises a buzzer, an alarm lamp and a signal transmitting sensor.

5. A leak detection apparatus for a diaphragm compressor as defined in claim 1, wherein: the third check valve (13) is a 6Bar check valve.

6. A leak detection apparatus for a diaphragm compressor as defined in claim 1, wherein: a fourth connecting pipe (14) is arranged at the third interface of the connecting joint (10), and a valve is arranged at the tail end of the fourth connecting pipe (14).

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