Gas density meter pipeline structure

Abstract

The utility model discloses a gas density meter pipeline structure, and relates to the technical field of density meter equipment, according to the gas density meter pipeline structure, a connecting insertion pipe enters and exits into an equipment connecting pipeline, the connecting insertion pipe is connected with equipment by rotating a connecting nut, and a sliding sleeve is pulled downwards, so that a clamping ball on the upper side is squeezed into a movable groove; after the sliding sleeve completely slides out, the sliding sleeve is matched with a reset spring to restore the initial state, a nut clamping groove in the lower end of the sliding sleeve is used for clamping a connecting nut, an arc-shaped groove is aligned with a movable groove in the lower side, and a clamping ball is driven by the reset spring to move and be attached to the inner side of the arc-shaped groove; supporting and positioning of the sliding sleeve are completed again, so that the movement track of the connecting nut is locked, the connecting nut is prevented from being affected by vibration when mechanical equipment works, the situation that the pipeline structure of the gas density meter is loosened and the detection accuracy of the density meter is affected is avoided, and the connecting stability of the pipeline structure of the gas density meter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of density meter equipment, in particular to a gas density meter pipeline structure. Background Art

[0002] A gas density meter is a device for observing gas density. It is widely used in various industries and plays a huge role. It effectively improves the monitoring of gas density at work, ensures the accurate reading of gas density values, and improves the simplicity, convenience and safety of observation. When testing gas density, various industries usually use gas density meters and read the gas density by the direction of the pointer in the density meter and the dial. The sealing performance of the gas density meter pipeline structure affects the accuracy of the gas density detection value.

[0003] For example, announcement number CN207946323U, the utility model discloses a gas density meter for detecting the density of sulfur hexafluoride gas, the gas density meter includes a case and a dial, a base, a Baden tube, an end seat, a temperature compensation element, a movement and a pointer arranged inside the case; the case includes a shell, a cover and an observation window; by setting a ring edge recessed toward the inside of the shell at the top of the side wall of the shell, the ring edge has a folding surface parallel to the upper end face of the observation window, the folding surface contacts the upper end face of the observation window, so that a radial sealing surface is formed between the shell and the observation window, so that the case can be sealed as long as the cover is screwed on. Therefore, the gas density meter provided by the utility model greatly improves the sealing performance of the gas density meter shell, and can effectively prevent the poor sealing caused by improper operation of the employee, so that the cover is not tightened, thereby causing oil leakage or gas leakage.

[0004] Existing gas density meters are usually used on working mechanical equipment, and the pipeline structure of most gas density meters is easily affected by the vibration of the mechanical equipment during operation, resulting in a decrease in the air tightness of the pipeline structure of the gas density meter, thereby further affecting the accuracy of the gas density meter in monitoring gas density. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pipeline structure for a gas density meter to solve the problem raised in the above background technology that the existing gas density meters are generally used on working mechanical equipment, and the pipeline structures of most gas density meters are easily affected by the vibration of the mechanical equipment during operation, resulting in a decrease in the air tightness of the pipeline structure of the gas density meter, thereby further affecting the accuracy of the gas density meter in monitoring the gas density.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a gas density meter pipeline structure, including a gas density display meter, a gas density meter connecting pipe is fixedly installed at the lower end of the gas density display meter, a connecting plug is arranged at the lower end of the gas density meter connecting pipe, a sealing limit ring is fixedly installed on the lower side of the surface of the gas density meter connecting pipe, a connecting nut is arranged on the surface of the gas density meter connecting pipe located on the upper side of the sealing limit ring, a fixed sleeve is fixedly installed on the surface of the gas density meter connecting pipe located on the upper side of the connecting nut, a sliding sleeve is arranged on the surface of the fixed sleeve, a nut clamping groove is provided at the lower end of the sliding sleeve, arc-shaped grooves are provided at the left and right ends of the inner side of the sliding sleeve, a movable groove is provided on the fixed sleeve, a reset spring is fixedly installed inside the movable groove, and a locking ball is fixedly installed on the reset spring.

[0007] Preferably, a guide port is provided at the lower end of the connecting tube, and an O-ring is fixedly mounted on the surface of the connecting tube.

[0008] Preferably, the connecting nut and the gas density meter connecting pipe are sleeved together, and the inner diameter of the connecting nut is smaller than the sealing limit ring.

[0009] Preferably, a sealing ring is fixedly mounted on the lower end of the sealing limiting ring, and the connecting nut and the sealing limiting ring are in contact with each other.

[0010] Preferably, the fixing sleeve is designed to be a square structure, and the side of the upper end of the fixing sleeve is fixedly installed with a limited edge.

[0011] Preferably, the sliding sleeve is slidably connected to the fixed sleeve, the nut slot is snap-connected to the connecting nut, and both left and right ends of the sliding sleeve are provided with anti-slip grooves.

[0012] Preferably, four movable grooves are provided, and the four movable grooves are symmetrically distributed vertically and horizontally.

[0013] Preferably, the engaging ball is slidably connected to the movable groove, and the movable groove and the arc-shaped groove are adapted to each other.

[0014] Beneficial Effects

[0015] The utility model provides a gas density meter pipeline structure. Compared with the prior art, it has the following beneficial effects:

[0016] 1. The pipeline structure of the gas density meter first inserts the connecting pipe into the equipment connecting pipeline, and completes the threaded connection with the equipment by rotating the connecting nut. The connecting nut is used to drive the sealing limit ring and the sealing ring to fit tightly with the equipment connecting pipeline. At the same time, the O-ring is used to further improve the sealing of the pipeline connection structure, which is conducive to ensuring the accuracy of the gas density detected by the gas density meter.

[0017] 2. The pipeline structure of the gas density meter, after tightening the connecting nut, pull the sliding sleeve downward so that the engaging ball on the upper side is squeezed into the movable groove, releasing the support and positioning of the sliding sleeve, and after the sliding sleeve completely slides out, cooperate with the reset spring to restore the initial state, use the nut engaging groove at the lower end of the sliding sleeve to clamp the connecting nut, and align the arc-shaped groove with the movable groove on the lower side, and drive the engaging ball to move and fit to the inner side of the arc-shaped groove through the reset spring, and complete the support and positioning of the sliding sleeve again, thereby locking the movement trajectory of the connecting nut, preventing the connecting nut from being affected by the vibration of the mechanical equipment during operation, avoiding the loosening of the pipeline structure of the gas density meter, and affecting the detection accuracy of the density meter, which is beneficial to improving the stability of the connection of the pipeline structure of the gas density meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the fixed sleeve of the utility model;

[0021] Figure 4 This is a schematic diagram of the nut slot structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the movable slot structure of the utility model.

[0023] In the figure: 1. gas density display meter; 2. gas density meter connecting pipe; 3. connecting plug; 4. sealing limit ring; 5. connecting nut; 6. fixing sleeve; 7. sliding sleeve; 8. nut slot; 9. arc groove; 10. movable slot; 11. reset spring; 12. snap ball; 13. O-ring; 14. sealing ring; 15. limit edge; 16. anti-slip pattern. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-5The utility model provides a technical solution: a gas density meter pipeline structure, including a gas density display meter 1, a gas density meter connecting pipe 2 is fixedly installed at the lower end of the gas density display meter 1, a connecting plug 3 is arranged at the lower end of the gas density meter connecting pipe 2, a sealing limit ring 4 is fixedly installed on the lower side of the surface of the gas density meter connecting pipe 2, a connecting nut 5 is arranged on the surface of the gas density meter connecting pipe 2 located on the upper side of the sealing limit ring 4, a guide port is arranged at the lower end of the connecting plug 3, an O-ring 13 is fixedly installed on the surface of the connecting plug 3, and the connecting nut 5 and the gas density meter are fixedly connected. The meter connecting pipes 2 are sleeved with each other, the inner diameter of the connecting nut 5 is smaller than the sealing limit ring 4, and a sealing ring 14 is fixedly installed at the lower end of the sealing limit ring 4. The connecting nut 5 and the sealing limit ring 4 fit each other. First, the connecting plug 3 is inserted into the equipment connecting pipeline, and the threaded connection with the equipment is completed by rotating the connecting nut 5. The sealing limit ring 4 and the sealing ring 14 are closely fitted with the equipment connecting pipeline by the connecting nut 5, and the O-ring 13 is cooperated to further improve the sealing of the pipeline connection structure, which is conducive to ensuring the accuracy of the gas density detection by the gas density meter;

[0026] The surface of the gas density meter connecting tube 2 is located on the upper side of the connecting nut 5 and is fixedly installed with a fixing sleeve 6. A sliding sleeve 7 is provided on the surface of the fixing sleeve 6. A nut slot 8 is provided at the lower end of the sliding sleeve 7. Arc grooves 9 are provided at both ends of the inner side of the sliding sleeve 7. A movable groove 10 is provided on the fixing sleeve 6. A reset spring 11 is fixedly installed inside the movable groove 10. A snap-fit ​​ball 12 is fixedly installed on the reset spring 11. The fixing sleeve 6 is designed in a square structure. A limited edge 15 is fixedly installed on the side of the upper end of the fixing sleeve 6. The sliding sleeve 7 is slidably connected to the fixing sleeve 6. The nut slot 8 is snap-fitted and connected to the connecting nut 5. Anti-slip grooves 16 are provided at both ends of the sliding sleeve 7. Four movable grooves 10 are provided. The four movable grooves 10 are symmetrically distributed up and down and left and right. The snap-fit ​​ball 12 is slidably connected to the movable groove 10. 10 is adapted to the arc groove 9. After tightening the connecting nut 5, pull the sliding sleeve 7 downward so that the locking ball 12 on the upper side is squeezed into the movable groove 10, and the support and positioning of the sliding sleeve 7 is released. After the sliding sleeve 7 slides out completely, cooperate with the reset spring 11 to restore the initial state, and use the nut locking groove 8 at the lower end of the sliding sleeve 7 to clamp the connecting nut 5, and align the arc groove 9 with the movable groove 10 on the lower side. The locking ball 12 is driven by the reset spring 11 to move and fit to the inner side of the arc groove 9, and the support and positioning of the sliding sleeve 7 is completed again, thereby locking the movement trajectory of the connecting nut 5, preventing the connecting nut 5 from being affected by the vibration of the mechanical equipment during operation, avoiding the loosening of the gas density meter pipeline structure, and affecting the detection accuracy of the density meter, which is beneficial to improving the stability of the gas density meter pipeline structure connection.

[0027] When working, first insert the connecting pipe 3 into and out of the equipment connecting pipeline, and complete the threaded connection with the equipment by rotating the connecting nut 5, and use the connecting nut 5 to drive the sealing limit ring 4 and the sealing ring 14 to fit closely with the equipment connecting pipeline, and cooperate with the O-ring 13 to further improve the sealing of the pipeline connection structure. After tightening the connecting nut 5, pull the sliding sleeve 7 downward so that the upper engaging ball 12 is squeezed into the movable groove 10, and the support and positioning of the sliding sleeve 7 is released. After the sliding sleeve 7 slides out completely, cooperate with the reset spring 11 to restore the initial state, use the nut engaging groove 8 at the lower end of the sliding sleeve 7 to clamp the connecting nut 5, and align the arc groove 9 with the lower active groove 10, and drive the engaging ball 12 to move and fit to the inner side of the arc groove 9 by the reset spring 11, and complete the support and positioning of the sliding sleeve 7 again, thereby locking the movement trajectory of the connecting nut 5, preventing the connecting nut 5 from being affected by the vibration of the mechanical equipment during operation, and avoiding the loosening of the gas density meter pipeline structure, which affects the detection accuracy of the density meter.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A gas density meter pipeline structure, comprising a gas density display meter (1), characterized in that: A gas density meter connecting pipe (2) is fixedly installed at the lower end of the gas density meter connecting pipe (2), a connecting insert (3) is arranged at the lower end of the gas density meter connecting pipe (2), a sealing limit ring (4) is fixedly installed on the lower side of the surface of the gas density meter connecting pipe (2), a connecting nut (5) is arranged on the surface of the gas density meter connecting pipe (2) located above the sealing limit ring (4), a fixing sleeve (6) is fixedly installed on the surface of the gas density meter connecting pipe (2) located above the connecting nut (5), a sliding sleeve (7) is arranged on the surface of the fixing sleeve (6), a nut clamping groove (8) is provided at the lower end of the sliding sleeve (7), arc grooves (9) are provided at the left and right ends of the inner side of the sliding sleeve (7), a movable groove (10) is provided on the fixing sleeve (6), a reset spring (11) is fixedly installed inside the movable groove (10), and a locking ball (12) is fixedly installed on the reset spring (11).

2. A gas density meter pipeline structure according to claim 1, characterized in that: The lower end of the connecting pipe (3) is provided with a guide port, and an O-ring (13) is fixedly mounted on the surface of the connecting pipe (3).

3. A gas density meter pipeline structure according to claim 1, characterized in that: The connecting nut (5) and the gas density meter connecting pipe (2) are sleeved together, and the inner diameter of the connecting nut (5) is smaller than the sealing limit ring (4).

4. A gas density meter pipeline structure according to claim 3, characterized in that: A sealing ring (14) is fixedly mounted on the lower end of the sealing limiting ring (4), and the connecting nut (5) and the sealing limiting ring (4) are in contact with each other.

5. The gas density meter pipeline structure according to claim 1, characterized in that: The fixing sleeve (6) is designed to be a square structure, and a limiting edge (15) is fixedly installed on the side of the upper end of the fixing sleeve (6).

6. A gas density meter pipeline structure according to claim 5, characterized in that: The sliding sleeve (7) is slidably connected to the fixed sleeve (6), the nut slot (8) is snap-fitted and connected to the connecting nut (5), and both left and right ends of the sliding sleeve (7) are provided with anti-slip grooves (16).

7. A gas density meter pipeline structure according to claim 1, characterized in that: Four movable grooves (10) are provided, and the four movable grooves (10) are symmetrically distributed up and down and left and right.

8. A gas density meter pipeline structure according to claim 1, characterized in that: The engaging ball (12) is slidably connected to the movable groove (10), and the movable groove (10) and the arc-shaped groove (9) are mutually adapted.

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