Double-path liquid leakage detection controller

Abstract

A two-way liquid leakage detection controller comprises a display panel and a main circuit board, the display panel comprises a key module and a display module and has the functions of key input and screen display, the main circuit board comprises a digital-to-analog conversion module and a communication module and has the functions of liquid leakage signal acquisition and positioning and data transmission, and the two-way liquid leakage detection controller further comprises an upper shell and a lower shell. The upper shell and the lower shell are connected in a clamped mode, a key cap, a display screen and a light guide column are embedded in the upper shell, the bottom of the key cap and the bottom of the light guide column abut against a display panel, the display panel is fixed in the upper shell through self-tapping screws, and a main circuit board is installed in the lower shell. The two ends of the main circuit board are respectively connected with a double-path liquid leakage signal detection port and a signal port in an inserted mode, and the lower shell is provided with a limiting mechanism which plays a role in inserting a metal strip. According to the utility model, the two leakage signal detection ports are connected with the two detection belts, so that the use number of traditional leakage controllers is effectively reduced, the cost is reduced, and the occurrence of line entanglement can be further reduced.

Description

Technical Field

[0001] The utility model relates to the field of liquid leakage detection, in particular to a dual-path liquid leakage detection controller. Background Art

[0002] With the development of science and technology, the electrification and intelligence of production equipment are becoming increasingly higher. Liquid leakage is a common and potentially dangerous problem in various industrial production and commercial operations. Whether in chemical, semiconductor manufacturing, pharmaceutical, food processing or data centers, liquid leakage may cause serious safety accidents and property losses. Traditional leakage detection controllers are single-channel connection detection belts. The number required for semiconductor clean workshops is large, which occupies a large physical space and may cause line entanglements. At the same time, traditional leakage detection controllers are fixed to the wall or the ground with screws, which is not convenient for fixed installation and later disassembly and maintenance.

[0003] Based on this, this paper proposes a dual-path leakage detection controller. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dual-path liquid leakage detection controller to solve the problems of traditional liquid leakage detection controllers being used in large numbers at various locations, having difficult wiring, and being inconvenient to install and maintain.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-path liquid leakage detection controller, comprising a display panel and a main circuit board, wherein the display panel comprises a key module and a display module, which mainly play the role of key input and screen display, and the main circuit board comprises a digital-to-analog conversion module and a communication module, which mainly play the role of leakage signal acquisition, positioning and data transmission, and further comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are snap-connected, the upper shell is nested with a key cap, a display screen and a light guide column, the bottom of the key cap and the light guide column abuts the display panel, the display panel is fixed to the interior of the upper shell by self-tapping screws, the interior of the lower shell is equipped with a main circuit board, and the two ends of the main circuit board are respectively plugged with a dual-path liquid leakage signal detection port and a signal port, the dual-path liquid leakage signal detection port and the signal port are respectively sleeved with the upper shell, and the lower shell is provided with a limiting mechanism, which plays the role of plugging in a metal strip.

[0006] Preferably, the display screen is electrically connected to the display panel via a flat cable, and a gap between the display screen and the upper housing is sealed by a sealant.

[0007] Preferably, the dual-path liquid leakage signal detection port includes eight interfaces arranged in sequence, and every four interfaces form one path from top to bottom, thereby forming a dual-path interface.

[0008] Preferably, the signal port includes twelve interfaces arranged in sequence, and every four interfaces from top to bottom are respectively a signal transmission interface, an RS signal interface and a power interface.

[0009] Preferably, the lower shell is integrally formed with a buckle, a first limiting groove, a second limiting groove, a third limiting groove, a fourth limiting groove and a positioning block, and the first limiting groove, the second limiting groove, the third limiting groove and the fourth limiting groove are symmetrically arranged along the transverse center line of the lower shell.

[0010] Preferably, the lower shell is plugged with a lock card, and the lock card is slidably connected to the third limiting groove and the fourth limiting groove respectively, and the positioning block is interference fit with the lock card, which plays a role in strengthening the fixation of the lock card.

[0011] Preferably, the limiting mechanism includes an end of the locking card close to the first limiting groove, the first limiting groove and the second limiting groove. When the leakage controller is assembled, the end of the locking card close to the first limiting groove, the first limiting groove and the second limiting groove form a fixed groove for plugging in the metal strip.

[0012] Preferably, the buckle is snap-connected with a corresponding through slot in the upper shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a dual-channel leakage signal detection port to connect two detection belts, which effectively reduces the number of traditional leakage controllers used, reduces costs, and can further reduce the occurrence of line entanglements. In addition, the utility model forms an installation fixing groove through the layout design of the limit groove formed by the lock card and the lower shell, which is very convenient for the staff to install the leakage controller and the subsequent maintenance, greatly reducing the installation cost and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the liquid leakage detection controller of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the liquid leakage detection controller of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the lower shell of the utility model;

[0018] Figure 4 This is a schematic diagram of the lower housing and lock card structure of the utility model;

[0019] Figure 5 This is an internal cross-sectional view of the liquid leakage detection controller of the present utility model.

[0020] In the figure: upper shell 1, lower shell 2, buckle 201, first limiting groove 202, second limiting groove 203, third limiting groove 204, fourth limiting groove 205, positioning block 206, fixing groove 207, light guide column 3, button cap 4, lock card 5, display screen 6, dual-path leakage signal detection port 7, signal port 8, main circuit board 9, display board 10. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model may also be implemented in other ways different from those described herein. Therefore, the protection scope of the utility model is not limited to the specific embodiments disclosed below.

[0023] like Figure 1-5 As shown, a dual-path liquid leakage detection controller includes a display board 10 and a main circuit board 9. The display board 10 includes a key module and a display module, which mainly play the role of key input and screen display. The main circuit board 9 includes a digital-to-analog conversion module and a communication module, which mainly play the role of leakage signal acquisition, positioning and data transmission. It also includes an upper shell 1 and a lower shell 2. The upper shell 1 and the lower shell 2 are snap-connected. The upper shell 1 is nested with a key cap 4, a display screen 6 and a light guide column 3. The bottom of the key cap 4 and the light guide column 3 abuts the display board 10. The display board 10 is fixed to the inside of the upper shell 1 by self-tapping screws. The main circuit board 9 is installed in the lower shell 2. The two ends of the main circuit board 9 are respectively plugged with a dual-path liquid leakage signal detection port 7 and a signal port 8. The dual-path liquid leakage signal detection port 7 and the signal port 8 are respectively sleeved with the upper shell 1. The lower shell 2 is provided with a limiting mechanism to play the role of plugging in metal strips.

[0024] The lower shell 2 is integrally formed with a buckle 201, a first limiting groove 202, a second limiting groove 203, a third limiting groove 204, a fourth limiting groove 205 and a positioning block 206. The first limiting groove 202 and the second limiting groove 203 and the third limiting groove 204 and the fourth limiting groove 205 are symmetrically arranged along the transverse center line of the lower shell 2 respectively. The lower shell 2 is plugged with a lock card 5, and the lock card 5 is slidably connected to the third limiting groove 204 and the fourth limiting groove 205 respectively. The positioning block 206 is interference fit with the lock card 5 to strengthen the fixation of the lock card 5. The limiting mechanism includes an end of the lock card 5 close to the first limiting groove 202, the first limiting groove 202 and the second limiting groove 203. When the leakage controller is assembled, the end of the lock card 5 close to the first limiting groove 202, the first limiting groove 202 and the second limiting groove 203 form a fixing groove 207 for plugging in the metal strip.

[0025] The buckle 201 is snap-connected with the corresponding through-slot of the upper shell 1, the display screen 6 is electrically connected to the display panel 10 via a flat cable, and the gap between the display screen 6 and the upper shell 1 is sealed by a sealant. The dual-path leakage signal detection port 7 includes eight interfaces arranged in sequence, and every four interfaces from top to bottom are one path, thus forming a dual-path interface. The signal port 8 includes twelve interfaces arranged in sequence, and every four interfaces from top to bottom are a signal transmission interface, an RS485 signal interface, and a power interface.

[0026] The display panel 10 is also mounted with a main control module, a clock chip, a watchdog circuit and an inter-board interface circuit. The main control module is responsible for processing all human-machine interaction information, including display drive, key module input acquisition, operation time chip access time, and communicates with the main circuit board 9 through the inter-board interface circuit. The watchdog circuit is used to detect whether the main control module is faulty. If the module is faulty, the main control module will be reset. The time chip is used to store and provide system time.

[0027] The main circuit board 9 is also mounted with a main control chip, which connects various circuits to realize leakage detection and self-test, collects leakage information and self-test information through the analog-to-digital conversion module, realizes the switching of detection and self-test states through the signal switching circuit, interacts with the user through the inter-board interface circuit, and transmits the detection results through the switch output circuit, sound alarm circuit and communication module.

[0028] Working principle: The leakage sensor controller provides a constant current for the matching "leakage detection belt". When no leakage occurs, the signal feedback of the "leakage detection belt" is zero; if leakage occurs, the signal feedback of the "leakage detection belt" is the leakage point voltage, and the leakage position is the feedback voltage divided by the resistivity of the detection belt. Due to the use of a constant current circuit, the feedback voltage will not be affected by the internal resistance of the liquid. Since liquid ionization takes time, the sensitivity of the detection circuit can be controlled by setting the detection time by software.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A dual-path liquid leakage detection controller, comprising a display panel (10) and a main circuit board (9), wherein the display panel (10) comprises a key module and a display module, which mainly play the role of key input and screen display, and the main circuit board (9) comprises a digital-to-analog conversion module and a communication module, which mainly play the role of liquid leakage signal acquisition and positioning and data transmission, characterized in that: The invention also comprises an upper shell (1) and a lower shell (2), wherein the upper shell (1) and the lower shell (2) are snap-fitted and connected, wherein the upper shell (1) is embedded with a key cap (4), a display screen (6) and a light guide column (3), wherein the bottoms of the key cap (4) and the light guide column (3) abut against a display panel (10), wherein the display panel (10) is fixed inside the upper shell (1) by self-tapping screws, wherein a main circuit board (9) is installed inside the lower shell (2), wherein two ends of the main circuit board (9) are respectively plugged with a dual-path liquid leakage signal detection port (7) and a signal port (8), wherein the dual-path liquid leakage signal detection port (7) and the signal port (8) are respectively sleeved with the upper shell (1), and the lower shell (2) is provided with a limiting mechanism, which plays the role of plugging in a metal strip.

2. A dual-path liquid leakage detection controller according to claim 1, characterized in that: The display screen (6) is electrically connected to the display panel (10) via a flat cable, and the gap between the display screen (6) and the upper housing (1) is sealed by a sealant.

3. A dual-path liquid leakage detection controller according to claim 1, characterized in that: The dual-path liquid leakage signal detection port (7) comprises eight interfaces arranged in sequence, with four interfaces forming one path from top to bottom, thus forming a dual-path interface.

4. A dual-path liquid leakage detection controller according to claim 1, characterized in that: The signal port (8) comprises twelve interfaces arranged in sequence, and every four interfaces from top to bottom are respectively a signal transmission interface, an RS485 signal interface and a power supply interface.

5. A dual-path liquid leakage detection controller according to claim 1, characterized in that: The lower shell (2) is integrally formed with a buckle (201), a first limiting groove (202), a second limiting groove (203), a third limiting groove (204), a fourth limiting groove (205) and a positioning block (206); the first limiting groove (202), the second limiting groove (203), the third limiting groove (204) and the fourth limiting groove (205) are symmetrically arranged along the transverse center line of the lower shell (2).

6. A dual-path liquid leakage detection controller according to claim 5, characterized in that: The lower shell (2) is plugged with a lock card (5), and the lock card (5) is slidably connected to the third limiting groove (204) and the fourth limiting groove (205) respectively. The positioning block (206) is interference-fitted with the lock card (5), thereby strengthening the fixing of the lock card (5).

7. A dual-path liquid leakage detection controller according to claim 6, characterized in that: The limiting mechanism comprises an end of the locking card (5) close to the first limiting groove (202), the first limiting groove (202) and the second limiting groove (203); when the liquid leakage controller is assembled, an end of the locking card (5) close to the first limiting groove (202), the first limiting groove (202) and the second limiting groove (203) form a fixing groove (207) for plugging the metal strip.

8. A dual-path liquid leakage detection controller according to any one of claims 5 to 7, characterized in that: The buckle (201) is snap-connected with a corresponding through slot of the upper shell (1).

Images