Gas leakage detection system

Abstract

The utility model relates to the technical field of gas leakage detection, in particular to a gas leakage detection system, which comprises a shell, a first pipeline group, a second pipeline group, a first liquid level connecting pipe group, a second liquid level connecting pipe group, a third liquid level connecting pipe group, a remote liquid level transmitter group and an in-situ liquid level meter, the first pipeline set, the first liquid level connecting pipe set, the second liquid level connecting pipe set and the third liquid level connecting pipe set are all communicated with the shell, the remote liquid level transmitter set is installed on the second liquid level connecting pipe set, the in-situ liquid level meter is installed between the first liquid level connecting pipe set and the third liquid level connecting pipe set, and the lower end of the second pipeline set extends into the bottom of the shell and is communicated with the interior of the shell. The shell is filled with liquid, the current leakage condition of the safety valve can be obtained by observing the numerical values of the remote liquid level transmitter set and the on-site liquid level meter, the opening condition of the safety valve can be accurately reflected, the risk of misjudgment and missed judgment is reduced, and the problem that corresponding measures cannot be immediately known and taken after the safety valve is opened is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage detection, in particular to a gas leakage detection system. Background Art

[0002] In the pressure vessels used in chillers, safety valves are generally used as leakage devices and are installed at the top of the condenser or evaporator. When the pressure inside the pressure vessel rises above the specified value, the medium is discharged to the outside of the system to prevent the medium pressure inside the equipment from exceeding the specified value.

[0003] However, the current safety valve cannot be monitored in real time to see whether it is open normally when it is in operation, unless someone approaches the unit to check it using a halogen leak detector, or manually feels the situation at the safety valve outlet. This method is not only time-consuming and labor-intensive, but also has a timeliness problem, that is, it is impossible to immediately know and take corresponding measures after the safety valve is opened. Utility Model Content

[0004] The utility model aims to provide a gas leakage detection system to solve the problem that it is impossible to immediately know and take corresponding measures after the safety valve is opened.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model is as follows: a gas leakage detection system, comprising a shell, a first pipeline group, a second pipeline group, a first liquid level pipe group, a second liquid level pipe group, a third liquid level pipe group, a remote liquid level transmitter group and a local liquid level meter, the first pipeline group, the first liquid level pipe group, the second liquid level pipe group and the third liquid level pipe group are all connected to the shell, and the first liquid level pipe group, the second liquid level pipe group and the third liquid level pipe group are all located on the same side, the second liquid level pipe group and the third liquid level pipe group are connected, the remote liquid level transmitter group is installed on the second liquid level pipe group, the local liquid level meter is installed between the first liquid level pipe group and the third liquid level pipe group, the second pipeline group is inserted into the shell from the top of the shell, and the lower end of the second pipeline group extends into the bottom of the shell and is connected to the inside of the shell, the upper and lower end surfaces of the shell are sealed, and the shell is filled with liquid whose liquid level is lower than the lowest surface of the first pipeline group and the second liquid level pipe group.

[0006] Furthermore, it also includes a solenoid valve, which is connected to the upper side of the first connecting pipe group and is located above the shell.

[0007] Furthermore, it also includes a screw plug, which is detachably connected to the bottom surface of the shell.

[0008] Furthermore, a first sealing plate is fixed to the upper end surface of the shell for sealing the upper end surface, a second sealing plate is fixed to the lower end surface of the shell for sealing the lower end surface, the second pipeline group is sealingly connected to the first sealing plate, and the screw plug is detachably connected to the second sealing plate.

[0009] Furthermore, the liquid filled in the shell is glycerin liquid.

[0010] Furthermore, it also includes a user control cabinet, the remote liquid level transmitter group and the local liquid level meter are both connected to the user control cabinet by signal, and the user control cabinet is provided with an alarm module.

[0011] The beneficial effects of this scheme are as follows: (1) The second pipeline group is connected to the safety valve of the pressure vessel with a closed pipeline, and the outlet of the first pipeline group is connected to the atmosphere. When there is no leakage in the safety valve, due to the principle of communicating vessels, the liquid levels of glycerin in the shell and the second pipeline group are consistent. When the safety valve leaks, the leaked gas enters the second pipeline group, the pressure increases, and the glycerin liquid level in the second pipeline group is forced to drop, and the liquid level in the shell rises accordingly. Through the connection of the first liquid level connecting pipe group, the second liquid level connecting pipe group and the third liquid level connecting pipe group, the liquid level data of the remote liquid level transmitter group and the local liquid level meter rise. The current safety valve leakage situation can be obtained by observing the values ​​of the remote liquid level transmitter group and the local liquid level meter, which can accurately reflect the opening situation of the safety valve and reduce the risk of misjudgment and omission.

[0012] (2) The remote level transmitter group and the local level meter are connected to the user control cabinet signal. When the level rises above the set value, the alarm module of the user control cabinet will sound an alarm to remind the safety valve that a leak has occurred, and record the alarm time and liquid level change. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the liquid level change before and after the safety valve is opened in an embodiment of the utility model. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] The figure marks in the drawings of the specification include: a first pipeline group 1, a first sealing plate 2, a second pipeline group 3, a shell 4, a solenoid valve 5, a first liquid level connecting pipe group 6, a second liquid level connecting pipe group 7, a remote liquid level transmitter group 8, an on-site liquid level meter 9, a third liquid level connecting pipe group 10, a screw plug 11, and a second sealing plate 12.

[0017] Example

[0018] Basically as attached Figure 1 As shown: A gas leakage detection system, including a shell 4, a first pipeline group 1, a second pipeline group 3, a first liquid level pipe group 6, a second liquid level pipe group 7, a third liquid level pipe group 10, a remote liquid level transmitter group 8, an on-site liquid level meter 9, a solenoid valve 5, a screw plug 11 and a user control cabinet, the first pipeline group 1, the first liquid level pipe group 6, the second liquid level pipe group 7 and the third liquid level pipe group 10 are all connected to the shell 4, and the first liquid level pipe group 6, the second liquid level pipe group 7 and the third liquid level pipe group 10 are all located on the same side, the second liquid level pipe group 7 is connected to the third liquid level pipe, and the remote liquid level transmitter group 8 is installed on On the second liquid level pipe group 7, the local level meter 9 is installed between the first liquid level pipe group 6 and the third liquid level pipe group 10, the second pipeline group 3 is inserted into the shell 4 from the top, and the lower end of the second pipeline group 3 extends into the bottom of the shell 4 and communicates with the inside of the shell 4, the upper end surface of the shell 4 is fixed with a first sealing plate 2 for sealing the upper end surface, and the lower end surface of the shell 4 is fixed with a second sealing plate 12 for sealing the lower end surface, the second pipeline group 3 is sealed and connected with the first sealing plate 2, and the screw plug 11 is detachably connected to the second sealing plate 12; the shell 4 is filled with glycerine liquid whose liquid level is lower than the lowest surface of the first pipeline group 1 and the second liquid level pipe group 7. The solenoid valve 5 is connected to the upper side of the first pipe group, and the solenoid valve 5 is located above the shell 4. The remote level transmitter group 8 and the local level meter 9 are both connected to the user control cabinet signal, the solenoid valve 5 is electrically connected to the user control cabinet, and the user control cabinet is provided with an alarm module, which includes a warning light and a buzzer.

[0019] The specific implementation process is as follows: at the beginning, the second pipeline group 3 is connected to the safety valve of the pressure vessel with a closed pipeline, and the solenoid valve 5 is opened to allow a certain amount of glycerin to be filled into the device through the first pipeline group 1; after the glycerin is filled, the solenoid valve 5 is closed, and the pressure vessel is connected to the safety valve of the pressure vessel. Figure 2As shown, due to the communicating vessel principle, when there is no leakage in the safety valve, the liquid levels of glycerin in the shell 4 and the second pipeline group 3 are consistent everywhere, and the liquid level alarm parameters are set. When the safety valve is tripped due to the pressure in the pressure vessel exceeding the safety value, the gas in the pressure vessel will enter the second pipeline group 3 through the safety valve, so that the pressure in the second pipeline group 3 increases. Since the outlet of the first pipeline group 1 is connected to the atmosphere, the pressure is relatively small. According to the communicating vessel principle, the glycerin liquid level in the second pipeline group 3 will drop, and the liquid level in the shell 4 will rise. Through the first liquid level pipe group 6 and the second liquid level pipe group 6, the glycerin liquid level in the second pipeline group 3 will decrease, and the liquid level in the shell 4 will increase. The connection between group 7 and the third liquid level connecting pipe group 10, the remote liquid level transmitter group 8 and the local liquid level meter 9 can monitor the liquid level changes in the shell 4 in real time, and the specific rising values ​​of the remote liquid level transmitter group 8 and the local liquid level meter 9 are positively correlated with the gas leakage amount; after the liquid level rises above the set value, the control system sends an alarm signal to urge the user to check whether there is any abnormality in the pressure vessel; when the user has handled the abnormal situation, the alarm is reset, and the solenoid valve 5 is opened at this time to release the excess gas in the second pipeline group 3. After the liquid level returns to normal, the solenoid valve 5 is closed, and the opening of the safety valve is continuously monitored again.

[0020] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0021] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A gas leak detection system, characterized in that: It includes a shell, a first pipeline group, a second pipeline group, a first liquid level pipe group, a second liquid level pipe group, a third liquid level pipe group, a remote liquid level transmitter group and a local liquid level meter. The first pipeline group, the first liquid level pipe group, the second liquid level pipe group and the third liquid level pipe group are all connected to the shell, and the first liquid level pipe group, the second liquid level pipe group and the third liquid level pipe group are all located on the same side. The second liquid level pipe group and the third liquid level pipe group are connected. The remote liquid level transmitter group is installed on the second liquid level pipe group. The local liquid level meter is installed between the first liquid level pipe group and the third liquid level pipe group. The second pipeline group is inserted into the shell from the top of the shell, and the lower end of the second pipeline group extends into the bottom of the shell and is connected to the inside of the shell. The upper and lower end surfaces of the shell are sealed, and the shell is filled with liquid whose liquid level is lower than the lowest surface of the first pipeline group and the second liquid level pipe group.

2. A gas leakage detection system according to claim 1, characterized in that: It also includes a solenoid valve, which is connected to the upper side of the first connecting pipe group and is located above the shell.

3. A gas leak detection system according to claim 2, characterized in that: It also includes a screw plug which is detachably connected to the bottom surface of the shell.

4. A gas leakage detection system according to claim 3, characterized in that: The upper end surface of the shell is fixed with a first sealing plate for sealing the upper end surface, the lower end surface of the shell is fixed with a second sealing plate for sealing the lower end surface, the second pipeline group is sealingly connected to the first sealing plate, and the screw plug is detachably connected to the second sealing plate.

5. A gas leakage detection system according to claim 4, characterized in that: The liquid filled in the shell is glycerin liquid.

6. A gas leakage detection system according to claim 5, characterized in that: It also includes a user control cabinet, the remote liquid level transmitter group and the local liquid level meter are both connected to the user control cabinet signal, and the user control cabinet is provided with an alarm module.

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