An outdoor fire-fighting liquid level sensor
By introducing a stabilizing mechanism into the fire-fighting liquid level sensor, the problem of flange connection loosening caused by long-term vibration or external impact is solved, thereby improving the stability of the flange connection, preventing water leakage, and ensuring the normal operation of the instrument.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING ZHONGCHUANG ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-06-12
AI Technical Summary
Existing fire-fighting liquid level sensors may experience loose bolts or wear of connecting parts due to long-term vibration or external impact, leading to poor sealing at the flange connection and potential water leakage, which affects the instrument's performance.
An outdoor fire-fighting liquid level sensor was designed. The stability of the connecting flange is improved by a stabilizing mechanism, which includes components such as an operating block, extension rod, traction block, traction rod and fastening bolts, to ensure that the fastening bolts and nuts do not loosen and to enhance the stability of the flange connection.
This effectively prevents the fastening bolts and nuts from loosening, improves the stability of the flange connection, prevents water leakage, and ensures the normal use of the instrument.
Smart Images

Figure CN224352803U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid level sensors, specifically an outdoor fire-fighting liquid level sensor. Background Technology
[0002] A liquid level sensor (static pressure level gauge / level transmitter / level sensor / water level sensor) is a pressure sensor that measures liquid level. A static pressure submersible level transmitter (level gauge) is based on the principle that the static pressure of the measured liquid is proportional to its height. It uses an isolated diffused silicon sensing element or a ceramic capacitive pressure sensor to convert the static pressure into an electrical signal. After temperature compensation and linear correction, it is converted into a standard electrical signal, suitable for liquid level measurement in the fire protection industry.
[0003] However, existing liquid level sensors used in fire protection still have the following problems during use:
[0004] Long-term vibration or external impact of existing connecting pipes can accelerate bolt loosening or wear of connecting parts, reducing vibration resistance. If the flange connection of the liquid level sensor is not tightened, it will lead to poor sealing at the flange connection, which may cause water leakage due to pressure changes, affecting the performance of the instrument. Therefore, it is necessary to develop an outdoor fire-fighting liquid level sensor for use in the existing liquid level sensor field. Utility Model Content
[0005] To address the shortcomings of existing technologies, the long-term vibration or external impact of existing connecting pipes can accelerate bolt loosening or wear of connecting parts, reducing vibration resistance. In addition, the flange connection of the liquid level sensor may not be tightened, resulting in poor sealing and potential leakage due to pressure changes, thus affecting the performance of the instrument. This invention proposes an outdoor fire-fighting liquid level sensor.
[0006] The technical solution adopted by this utility model to solve its technical problem is: an outdoor fire-fighting liquid level sensor, comprising:
[0007] A liquid level sensor body, on which a fire-fighting water inlet pipe is fixedly mounted and a fire-fighting water outlet pipe is fixedly mounted, and a first connecting flange is fixedly mounted at one end of both the fire-fighting water inlet pipe and the fire-fighting water outlet pipe, and a second connecting flange is mounted on one side of each of the first connecting flanges.
[0008] The stabilizing mechanism includes an operating block, which is fixedly assembled with the liquid level sensor body. Two extension rods are symmetrically fixedly mounted on the operating block. Limit blocks are fixedly mounted at one end of each extension rod. Traction blocks are movably mounted on the two extension rods. Traction rods are fixedly mounted on the traction blocks, and the traction rods movably pass through the limit blocks. A traction ring is fixedly mounted at one end of the traction rod, and a first retaining ring and a second retaining ring are fixedly mounted on the traction ring. Traction ports are symmetrically arranged through the operating block, located on both sides of the extension rods. Assembly rods are symmetrically fixedly mounted on each traction port. Slider blocks are movably mounted on each of the two assembly rods. Vertical rods are fixedly mounted on each slider. A guide rod is fixedly mounted at one end of each vertical rod. A connecting rod is fixedly mounted at one end of each guide rod. An installation rod is fixedly mounted at one end of each connecting rod. An arc plate is fixedly mounted at one end of each installation rod.
[0009] Preferably, both the first connecting flange and the second connecting flange are provided with multiple connecting holes, and the connecting holes on the first connecting flange and the connecting holes on the second connecting flange are connected.
[0010] Preferably, a connecting pipe is fixedly mounted on the second connecting flange, and fastening bolts are correspondingly mounted on the connecting holes on the liquid level sensor body and the connecting holes on the second connecting flange, and fastening nuts are threaded onto the fastening bolts.
[0011] Preferably, the second retaining ring is located outside the first retaining ring, and one end of the fastening bolt is located between the first and second retaining rings. The end faces of the first and second retaining rings are in contact with the surface of the fastening nut, and the arc plate is in contact with the other end of the fastening bolt.
[0012] Preferably, mounting plates are fixedly assembled at both symmetrical ends of the traction block, and a fixing plate is fixedly assembled at one end of the slider.
[0013] Preferably, each of the fixed plates is movably fitted with an adjusting rod, the other end of which is movably fitted with the mounting plate.
[0014] Preferably, the traction block has a rotating cavity inside, and the operating block is threaded with an adjusting bolt. The adjusting bolt is located on one side of the liquid level sensor body, and a rotating rod is fixedly mounted on one end of the adjusting bolt.
[0015] Preferably, one end of the rotating rod extends movably into the rotating cavity, and a rotating disk is fixedly mounted on one end of the rotating rod, with the rotating disk and the rotating cavity being movably assembled.
[0016] The advantages of this utility model are:
[0017] This invention assembles a second connecting flange on a connecting pipe with a first connecting flange, aligning the connecting holes on the second and first connecting flanges. Fastening bolts are installed on these holes, and fastening nuts are fitted onto them, thus fixing the second and first connecting flanges together. A traction block moves on two extension rods, causing one end of the fastening bolt to engage with a traction ring, positioned between a first and second retaining ring. The first and second retaining rings engage with the surfaces of the fastening nuts. Simultaneously, a slider moves on two assembly rods, causing a guide rod on a vertical rod to move. The guide rod then moves an mounting rod on a connecting rod, which in turn moves an arc plate, causing the arc plate to engage with the other end of the fastening bolt. This restricts the movement of the fastening bolt and nut, preventing loosening and further improving the stability between the second and first connecting flanges. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0019] Figure 1 This is a schematic diagram of the assembly structure of the liquid level sensor and stabilizing mechanism of this utility model;
[0020] Figure 2 This is a schematic diagram of the liquid level sensor structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the stabilizing mechanism of this utility model;
[0022] Figure 4 This is a schematic diagram of the stabilizing mechanism of this utility model;
[0023] Figure 5 This is a cross-sectional view of the stabilizing mechanism of this utility model.
[0024] In the picture:
[0025] 10. Liquid level sensor body; 11. Fire water inlet pipe; 12. Fire water outlet pipe; 13. First connecting flange;
[0026] 20. Second connecting flange; 21. Butt joint pipe; 22. Connecting hole; 23. Fastening bolts;
[0027] 30. Tighten the nuts;
[0028] 31. Stabilizing mechanism; 3100. Operating block; 3101. Extension rod; 3102. Limiting block; 3103. Traction block; 3104. Traction rod; 3105. Traction ring; 3106. First retaining ring; 3107. Second retaining ring; 3108. Mounting plate; 3109. Traction port; 3110. Assembly rod; 3111. Sliding block; 3112. Fixing plate; 3113. Adjusting rod; 3114. Vertical rod; 3115. Guide rod; 3116. Connecting rod; 3117. Mounting rod; 3118. Arc plate; 3119. Adjusting bolt; 3120. Rotating cavity; 3121. Rotating rod; 3122. Rotating disk. Detailed Implementation
[0029] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0031] This application discloses an outdoor fire-fighting liquid level sensor. (Refer to...) Figures 1-3An outdoor fire-fighting liquid level sensor includes a liquid level sensor body 10, a fire-fighting water inlet pipe 11 and a fire-fighting water outlet pipe 12 fixedly mounted on the liquid level sensor body 10, a first connecting flange 13 fixedly mounted at one end of both the fire-fighting water inlet pipe 11 and the fire-fighting water outlet pipe 12, and a second connecting flange 20 mounted on one side of each of the first connecting flange 13. Both the first connecting flange 13 and the second connecting flange 20 have multiple connecting holes 22, which communicate with each other. A connecting pipe 21 is fixedly mounted on the second connecting flange 20. The connection hole 22 on the level sensor body 10 and the connection hole 22 on the second connecting flange 20 are respectively equipped with fastening bolts 23. Each fastening bolt 23 is threaded with a fastening nut 30. Multiple stabilizing mechanisms 31 are installed on the level sensor body 10. Each stabilizing mechanism 31 includes an operating block 3100. The operating block 3100 is fixedly assembled with the level sensor body 10 and is located on one side of the fire inlet pipe 11 and the fire outlet pipe 12. Extension rods 3101 are symmetrically fixedly assembled on the operating block 3101. Limit blocks 3102 are fixedly assembled at one end of each of the two extension rods 3101. Traction blocks 3103 are movably assembled on each of the two extension rods 3101. A traction rod 3104 is fixedly mounted on the operating block 3103. The traction rod 3104 movably passes through the limiting block 3102, and a traction ring 3105 is fixedly mounted on one end of the traction rod 3104. A first retaining ring 3106 is fixedly mounted on the traction ring 3105, and a second retaining ring 3107 is fixedly mounted on the traction ring 3105. The second retaining ring 3107 is located outside the first retaining ring 3106, and one end of the fastening bolt 23 is located between the first retaining ring 3106 and the second retaining ring 3107. The end faces of the first retaining ring 3106 and the second retaining ring 3107 are in contact with the surface of the fastening nut 30. Traction ports 3109 are symmetrically provided through the operating block 3100. 09 is located on both sides of the extension rod 3101. Assembly rods 3110 are symmetrically fixedly mounted on the traction port 3109. Slider 3111 is movably mounted on both assembly rods 3110. Vertical rods 3114 are fixedly mounted on both sliders 3111. Guide rods 3115 are fixedly mounted on one end of each vertical rod 3114. Connecting rods 3116 are fixedly mounted on one end of each guide rod 3115. Mounting rods 3117 are fixedly mounted on one end of each mounting rod 3117. Arc plates 3118 are fixedly mounted on one end of each mounting rod 3117. Arc plates 3118 are fitted with the other end of fastening bolts 23. The liquid level sensor body 10 adopts the PY201 general-purpose liquid level sensor.
[0032] In this invention, the second connecting flange 20 on the connecting pipe 21 is assembled with the first connecting flange 13, such that the connecting hole 22 on the second connecting flange 20 coincides with the connecting hole 22 on the first connecting flange 13. Fastening bolts 23 are installed on the connecting holes 22 on the second connecting flange 20 and the first connecting flange 13, and fastening nuts 30 are installed on the fastening bolts 23, thus fixing the second connecting flange 20 and the first connecting flange 13 together. The traction block 3103 moves on the two extension rods 3101, causing one end of the fastening bolt 23 to engage with the traction ring 3105, and one end of the fastening bolt 23 is located between the first retaining ring 3106 and the second retaining ring 3105. Between 07, the first retaining ring 3106 and the second retaining ring 3107 are in contact with the surface of the fastening nut 30. At the same time, the slider 3111 moves on the two assembly rods 3110, causing the slider 3111 to drive the guide rod 3115 on the vertical rod 3114 to move. The guide rod 3115 drives the mounting rod 3117 on the connecting rod 3116 to move. The mounting rod 3117 drives the arc plate 3118 to move, causing the arc plate 3118 to be in contact with the other end of the fastening bolt 23. This restricts the movement of the fastening bolt 23 and the fastening nut 30, preventing the fastening bolt 23 and the fastening nut 30 from loosening, and further improving the stability between the second connecting flange 20 and the first connecting flange 13.
[0033] Reference Figures 3-5 The traction block 3103 has mounting plates 3108 fixedly mounted at both symmetrical ends. The slider 3111 has a fixed plate 3112 fixedly mounted at one end. The fixed plate 3112 has an adjusting rod 3113 movably mounted on it. The other end of the adjusting rod 3113 is movably mounted to the mounting plate 3108. The traction block 3103 has a rotating cavity 3120 inside. The operating block 3100 has an adjusting bolt 3119 threaded on it. The adjusting bolt 3119 is located on one side of the liquid level sensor body 10. One end of the adjusting bolt 3119 is fixedly mounted with a rotating rod 3121. One end of the rotating rod 3121 movably passes through the rotating cavity 3120. The rotating rod 3121 has a rotating disk 3122 fixedly mounted on one end of it, which rotates in the rotating cavity 3120.
[0034] In this utility model, the adjusting bolt 3119 is rotated on the operating block 3100, so that the adjusting bolt 3119 drives the rotating disk 3122 on the rotating rod 3121 to rotate on the rotating cavity 3120. The traction block 3103 moves on the two extension rods 3101. Under the action of the adjusting rod 3113, the slider 3111 moves on the two assembly rods 3110.
[0035] Working principle: The second connecting flange 20 on the connecting pipe 21 is assembled with the first connecting flange 13, so that the connecting hole 22 on the second connecting flange 20 coincides with the connecting hole 22 on the first connecting flange 13. Fastening bolts 23 are installed on the connecting holes 22 on the second connecting flange 20 and the first connecting flange 13, and fastening nuts 30 are installed on the fastening bolts 23 to fix the second connecting flange 20 and the first connecting flange 13. The adjusting bolt 3119 is rotated on the operating block 3100, causing the adjusting bolt 3119 to drive the rotating disk 3122 on the rotating rod 3121 to rotate in the rotating cavity 3120. The traction block 3103 moves on the two extension rods 3101. One end of the fastening bolt 23 is engaged with the traction ring 3105, and the fastening nut... One end of bolt 23 is located between the first retaining ring 3106 and the second retaining ring 3107. The first retaining ring 3106 and the second retaining ring 3107 are in contact with the surface of the fastening nut 30. At the same time, under the action of the adjusting rod 3113, the slider 3111 moves on the two mounting rods 3110, so that the slider 3111 drives the guide rod 3115 on the vertical rod 3114 to move. The guide rod 3115 drives the mounting rod 3117 on the connecting rod 3116 to move. The mounting rod 3117 drives the arc plate 3118 to move, so that the arc plate 3118 is in contact with the other end of the fastening bolt 23, so that the fastening bolt 23 and the fastening nut 30 are restricted from moving, preventing the fastening bolt 23 and the fastening nut 30 from loosening, and further improving the stability between the second connecting flange 20 and the first connecting flange 13.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An outdoor fire-fighting liquid level sensor, characterized in that: include: A liquid level sensor body (10) is fixedly mounted with a fire water inlet pipe (11) and a fire water outlet pipe (12). A first connecting flange (13) is fixedly mounted at one end of both the fire water inlet pipe (11) and the fire water outlet pipe (12). A second connecting flange (20) is mounted on one side of each of the first connecting flanges (13). A stabilizing mechanism (31) is provided, comprising an operating block (3100). The operating block (3100) is fixedly assembled with the liquid level sensor body (10). Extension rods (3101) are symmetrically fixedly mounted on the operating block (3100). Limiting blocks (3102) are fixedly mounted at one end of each of the two extension rods (3101). Traction blocks (3103) are movably mounted on the two extension rods (3101). Traction rods (3104) are fixedly mounted on the traction blocks (3103). The traction rods (3104) movably pass through the limiting blocks (3102), and a traction ring (3105) is fixedly mounted at one end of the traction rods (3104). A first retaining ring (3106) is fixedly mounted on the traction ring (3105). A second retaining ring (3107) is fixedly mounted. A traction port (3109) is symmetrically arranged through the operating block (3100). The traction port (3109) is located on both sides of the extension rod (3101). An assembly rod (3110) is symmetrically fixedly mounted on each traction port (3109). A slider (3111) is movably mounted on each of the two assembly rods (3110). A vertical rod (3114) is fixedly mounted on each slider (3111). A guide rod (3115) is fixedly mounted on one end of each vertical rod (3114). A connecting rod (3116) is fixedly mounted on one end of each guide rod (3115). An installation rod (3117) is fixedly mounted on one end of each connecting rod (3116). An arc plate (3118) is fixedly mounted on one end of each installation rod (3117).
2. The outdoor fire-fighting liquid level sensor according to claim 1, characterized in that: Both the first connecting flange (13) and the second connecting flange (20) are provided with multiple connecting holes (22), and the connecting holes (22) on the first connecting flange (13) and the connecting holes (22) on the second connecting flange (20) are connected.
3. The outdoor fire-fighting liquid level sensor according to claim 2, characterized in that: The second connecting flange (20) is fixedly equipped with a connecting pipe (21). The connecting hole (22) on the liquid level sensor body (10) and the connecting hole (22) on the second connecting flange (20) are respectively equipped with fastening bolts (23). Each fastening bolt (23) is threaded with a fastening nut (30).
4. The outdoor fire-fighting liquid level sensor according to claim 3, characterized in that: The second retaining ring (3107) is located outside the first retaining ring (3106), and one end of the fastening bolt (23) is located between the first retaining ring (3106) and the second retaining ring (3107). The end faces of the first retaining ring (3106) and the second retaining ring (3107) are in contact with the surface of the fastening nut (30), and the arc plate (3118) is in contact with the other end of the fastening bolt (23).
5. An outdoor fire-fighting liquid level sensor according to claim 1, characterized in that: The traction block (3103) is fixedly fitted with mounting plates (3108) at both symmetrical ends, and the slider (3111) is fixedly fitted with a fixing plate (3112) at one end.
6. An outdoor fire-fighting liquid level sensor according to claim 5, characterized in that: Each of the fixed plates (3112) is movably fitted with an adjusting rod (3113), and the other end of the adjusting rod (3113) is movably fitted with the mounting plate (3108).
7. An outdoor fire-fighting liquid level sensor according to claim 1, characterized in that: The traction block (3103) has a rotating cavity (3120) inside. The operating block (3100) is threaded with an adjusting bolt (3119). The adjusting bolt (3119) is located on one side of the liquid level sensor body (10). One end of the adjusting bolt (3119) is fixedly fitted with a rotating rod (3121).
8. An outdoor fire-fighting liquid level sensor according to claim 7, characterized in that: One end of the rotating rod (3121) is movably inserted into the rotating cavity (3120), and a rotating disk (3122) is fixedly mounted on one end of the rotating rod (3121). The rotating disk (3122) is movably assembled with the rotating cavity (3120).