A leakage monitoring device for a gas pressure regulating tank
The filter plate can be quickly disassembled and replaced using a limit rod and gear mechanism, and the gas concentration sensor can be used. This solves the problem of dust accumulation on the filter screen in the gas pressure regulating box affecting detection, and achieves efficient leak monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU LUCHENG GAS EQUIP CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
The filters in existing gas pressure regulating boxes tend to accumulate a lot of dust after prolonged use, which prevents airflow from passing through properly, affects leak detection, and makes replacement inefficient.
A method was designed to enable quick disassembly and replacement of the filter plate through a limiting rod and gear mechanism. Combined with a gas concentration sensor and a circulating fan, this ensures efficient airflow filtration and leak detection.
It enables quick replacement of filter plates, improves work efficiency, and can detect leak information immediately when there is a slight gas leak, preventing dust and impurities from affecting the detection results.
Smart Images

Figure CN224524272U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of gas pressure regulating boxes, and in particular relates to a leakage monitoring device for gas pressure regulating boxes. Background Technology
[0002] Gas pressure regulating boxes are an important component of gas transmission and distribution systems. During the use of gas pressure regulating boxes, in order to facilitate timely information in case of leaks, staff usually install leak monitoring equipment inside the gas pressure regulating boxes.
[0003] Existing gas detection equipment typically includes filters to prevent air impurities from mixing with the gas during testing, thus affecting the detection results. However, most filters are fixed by welding or bolts, which leads to a large amount of dust accumulating on the filter surface over time. Replacing the filter is difficult and inefficient. To address this, we provide a leak detection device for a gas pressure regulating box. Utility Model Content
[0004] The purpose of this utility model is to provide a leak monitoring device for a gas pressure regulating box. By rotating the limit rod, the filter plate is detached from the front. Then, the filter plate can be pulled out for replacement by pulling the handle. This prevents excessive dust on the filter plate from hindering airflow. It solves the problem that in existing filters, a large amount of dust accumulates on the surface during long-term use, preventing airflow from reaching the detection area and making it impossible to detect the problem in a timely manner.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is a leak monitoring device for a gas pressure regulating box, including a pressure regulating box. A mounting frame is fixedly connected to the front of the pressure regulating box. An adjustment groove is opened on the front of the mounting frame. A connecting rod is rotatably connected to the inner wall of the adjustment groove. There are two connecting rods in total. The front of the connecting rod penetrates through the pressure regulating box, and a gear is fixedly connected to the outer surface of the back of the connecting rod.
[0007] The connecting rod is fixedly connected to a limiting rod on its front side. The back of the limiting rod contacts the front of the mounting frame. A rack is meshed with the bottom of the gear. A push plate is fixedly connected to the front of the gear. The front of the push plate penetrates the mounting frame, and the back of the push plate contacts the front of the mounting frame. A filter plate is in contact with the back of the limiting rod. The back of the filter plate extends into the mounting frame. By rotating the limiting rod, the filter plate is disengaged from the front of the filter plate. Then, the handle is pulled to remove the filter plate for replacement, preventing excessive dust on the filter plate from hindering airflow.
[0008] Furthermore, a threaded rod is rotatably connected to the bottom of the mounting frame, a knob is fixedly connected to the outer surface of the bottom of the threaded rod, a support frame is threadedly connected to the outer surface of the threaded rod, a storage groove is provided inside the mounting frame, and a snap-fit plate is slidably connected to the inner wall of the storage groove. By pushing the snap-fit plate into the snap-fit groove, the detector is limited.
[0009] Furthermore, the bottom of the snap-fit plate is fixedly connected to the top of the support frame, and the bottom of the mounting frame is fixedly connected to an air inlet pipe. The end of the air inlet pipe away from the mounting frame is fixedly connected to the front of the pressure regulating box. The inner side of the mounting frame contacts a detector, and snap-fit grooves are opened on the bottom of the left and right sides of the detector. By extending the air inlet pipe into the pressure regulating box, the air inlet pipe can only draw in air from the pressure regulating box, which facilitates the immediate detection of gas leaks.
[0010] Furthermore, the top of the snap-fit plate extends through the mounting bracket, and the outer surface of the snap-fit plate is adapted to the inner wall of the snap-fit groove. A gas concentration sensor is fixedly connected to the inner wall of the detector, and a circulating fan is fixedly connected to the bottom of the gas concentration sensor. The output end of the circulating fan contacts the top of the filter plate. The gas concentration sensor is an H8205A infrared gas sensor, capable of monitoring multiple gases, possessing high accuracy and stability, and commonly used in industrial process control, environmental monitoring, and other fields. This type of sensor utilizes the absorption characteristics of gas molecules on specific wavelengths of infrared light to detect gas concentration, offering advantages such as non-contact measurement and immunity to electromagnetic interference.
[0011] This utility model has the following beneficial effects:
[0012] 1. This utility model features a filter plate. Specifically, a push plate is pushed inward, which simultaneously moves a rack. The rack then rotates a gear, which in turn rotates a connecting rod. This rotation causes a limiting rod to rotate, disengaging it from the front of the filter plate and removing its limiting function. The filter plate can then be pulled out for replacement by pulling the handle. The operation is simple and allows for quick disassembly of the filter screen, improving work efficiency.
[0013] 2. This utility model incorporates a circulating fan. Specifically, when the circulating fan starts, it draws air from inside the pressure regulating box into the detector through the air inlet pipe, where it is detected by a gas concentration sensor. This allows the pressure regulating box to quickly detect even minor gas leaks, enabling staff to receive information about gas leaks immediately. During the operation of the circulating fan, the airflow inside the pressure regulating box is filtered by a filter plate before entering the detector, preventing dust or impurities from entering the detector and affecting the detection.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic cross-sectional view of the mounting bracket of this utility model on the right side;
[0018] Figure 3 This is a schematic diagram of the internal structure of the adjusting groove of this utility model;
[0019] Figure 4 This is a schematic cross-sectional view of the right side of the storage slot of this utility model;
[0020] Figure 5 This is a schematic cross-sectional view of the detector of this utility model on the right side.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 101. Pressure regulating box; 102. Mounting bracket; 103. Filter plate; 104. Air inlet pipe; 105. Support frame; 106. Threaded rod; 107. Knob; 108. Adjustment groove; 109. Limiting rod; 110. Gear; 111. Rack; 112. Push plate; 113. Connecting rod; 114. Snap-fit plate; 115. Storage groove; 201. Detector; 202. Snap-fit groove; 203. Gas concentration sensor; 204. Circulating fan. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-5As shown, this utility model is a leak monitoring device for a gas pressure regulating box, including a pressure regulating box 101. A mounting bracket 102 is fixedly connected to the front of the pressure regulating box 101. An adjustment groove 108 is opened on the front of the mounting bracket 102. A connecting rod 113 is rotatably connected to the inner wall of the adjustment groove 108. There are two connecting rods 113. The front of the connecting rod 113 passes through the pressure regulating box 101. A gear 110 is fixedly connected to the outer surface of the back of the connecting rod 113.
[0025] A limiting rod 109 is fixedly connected to the front of the connecting rod 113. The back of the limiting rod 109 contacts the front of the mounting bracket 102. A rack 111 is meshed with the bottom of the gear 110. A push plate 112 is fixedly connected to the front of the gear 110. The front of the push plate 112 penetrates the mounting bracket 102, and the back of the push plate 112 contacts the front of the mounting bracket 102. A filter plate 103 is in contact with the back of the limiting rod 109. The back of the filter plate 103 extends into the mounting bracket 102. Pushing the push plate 112 inward will simultaneously drive the rack 111 to move, and then the rack 111 will move through the rack 111. 1. The movement drives the gear 110 to rotate, and then the rotation of the gear 110 synchronously drives the connecting rod 113 to rotate, causing the limiting rod 109 to rotate and disengage from the front of the filter plate 103. Then, the handle is pulled to remove the filter plate 103 for replacement. The bottom of the mounting bracket 102 is rotatably connected to a threaded rod 106, and a knob 107 is fixedly connected to the outer surface of the bottom of the threaded rod 106. A support frame 105 is threadedly connected to the outer surface of the threaded rod 106. The mounting bracket 102 has a storage groove 115 inside, and a snap-fit plate 114 is slidably connected to the inner wall of the storage groove 115. The bottom of the snap-fit plate 114 is connected to the support frame 105. The top of the mounting bracket 105 is fixedly connected, and the bottom of the mounting bracket 102 is fixedly connected to the air inlet pipe 104. The end of the air inlet pipe 104 away from the mounting bracket 102 is fixedly connected to the front of the pressure regulating box 101. The inner side of the mounting bracket 102 contacts the detector 201. The detector 201 has snap-fit grooves 202 on the bottom of its left and right sides. The top of the snap-fit plate 114 penetrates the mounting bracket 102, and the outer surface of the snap-fit plate 114 is adapted to the inner wall of the snap-fit groove 202. The inner wall of the detector 201 is fixedly connected to the gas concentration sensor 203. The bottom of the gas concentration sensor 203 is fixedly connected to the circulating fan 204. The output end of the circulating fan 204 is connected to the filter. When the top of the plate 103 contacts each other, the circulating fan 204 starts to draw air from inside the pressure regulating box 101 into the detector 201 through the air inlet pipe 104. The gas concentration sensor 203 detects the gas, so that the pressure regulating box 101 can quickly detect even a slight gas leak, allowing the staff to get information about the gas leak as soon as possible. During the operation of the circulating fan 204, the airflow inside the pressure regulating box 101 is filtered by the filter plate 103 before entering the detector 201 to prevent dust or impurities inside the pressure regulating box 101 from entering the detector 201 and affecting the detection.
[0026] A specific application of this embodiment is as follows: First, the operator installs the mounting bracket 102 onto the pressure regulating box 101 and connects the air inlet pipe 104 into the pressure regulating box 101. Then, the detector 201 is placed on the mounting bracket 102. Next, the operator rotates the knob 107, which in turn rotates the threaded rod 106. The rotation of the threaded rod 106 then moves the support bracket 105 upwards. During this upward movement, the support bracket 105 simultaneously pushes the locking plates 114 on both sides, causing them to disengage from the receiving slot 115 and enter the locking slot 202 inside the detector 201 to secure it and prevent it from shaking. Then, the circulating fan 204 is started. The circulating fan 204 draws air from inside the pressure regulating box 101 into the detector 201 through the air inlet pipe 104 and detects it using the gas concentration sensor 203, ensuring that the gas is only slightly leaking. The pressure regulating box 101 can also detect gas leaks quickly, allowing staff to receive information about gas leaks immediately. During the operation of the circulating fan 204, the airflow inside the pressure regulating box 101 is first filtered by the filter plate 103 when it enters the detector 201, preventing dust or impurities inside the pressure regulating box 101 from entering the detector 201 and affecting the detection. Over time, the filter plate 103 will be covered by a large amount of dust, making it difficult for airflow to pass through. At this time, the push plate 112 is pushed inward. When the push plate 112 moves inward, it will simultaneously drive the rack 111 to move. Then, the movement of the rack 111 will drive the gear 110 to rotate. Then, the rotation of the gear 110 will simultaneously drive the connecting rod 113 to rotate, and at the same time, the limit rod 109 will rotate, causing it to disengage from the front of the filter plate 103. Then, the handle can be pulled out to replace the filter plate 103.
[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A leak monitoring device for a gas pressure regulating box, comprising a pressure regulating box (101), wherein a mounting bracket (102) is fixedly connected to the front of the pressure regulating box (101), and an adjustment groove (108) is provided on the front of the mounting bracket (102), characterized in that: The inner wall of the regulating groove (108) is rotatably connected to a connecting rod (113). There are two connecting rods (113). The front of the connecting rod (113) passes through the pressure regulating box (101), and a gear (110) is fixedly connected to the outer surface of the back of the connecting rod (113). The connecting rod (113) is fixedly connected to the limiting rod (109) on the front side. The back side of the limiting rod (109) is in contact with the front side of the mounting frame (102). The gear (110) is meshed with a rack (111) at the bottom. The rack (111) is fixedly connected to the front side of the pushing plate (112). The front side of the pushing plate (112) penetrates the mounting frame (102). The back side of the pushing plate (112) is in contact with the front side of the mounting frame (102). The back side of the limiting rod (109) is in contact with a filter plate (103). The back side of the filter plate (103) extends into the interior of the mounting frame (102).
2. The leakage monitoring device for a gas pressure regulating box according to claim 1, characterized in that, The mounting bracket (102) is rotatably connected to a threaded rod (106) at its bottom, and a knob (107) is fixedly connected to the outer surface of the bottom of the threaded rod (106).
3. The leakage monitoring device for a gas pressure regulating box according to claim 2, characterized in that, The outer surface of the threaded rod (106) is threadedly connected to a support frame (105), and the mounting frame (102) has a storage groove (115) inside. The inner wall of the storage groove (115) is slidably connected to a snap-fit plate (114).
4. The leakage monitoring device for a gas pressure regulating box according to claim 3, characterized in that, The bottom of the snap-fit plate (114) is fixedly connected to the top of the support frame (105), and the bottom of the mounting frame (102) is fixedly connected to the air inlet pipe (104).
5. A leak monitoring device for a gas pressure regulating box according to claim 4, characterized in that, The end of the air inlet pipe (104) away from the mounting bracket (102) is fixedly connected to the front of the pressure regulating box (101). The inner side of the mounting bracket (102) is in contact with the detector (201). The detector (201) has a snap-fit groove (202) on the bottom left and right sides.
6. The leakage monitoring device for a gas pressure regulating box according to claim 5, characterized in that, The top of the snap-fit plate (114) passes through the mounting bracket (102), and the outer surface of the snap-fit plate (114) is adapted to the inner wall of the snap-fit groove (202).
7. A leak monitoring device for a gas pressure regulating box according to claim 6, characterized in that, A gas concentration sensor (203) is fixedly connected to the inner wall of the detector (201), and a circulating fan (204) is fixedly connected to the bottom of the gas concentration sensor (203). The output end of the circulating fan (204) is in contact with the top of the filter plate (103).