Pressure transmitter of container

Abstract

The utility model provides a pressure transmitter of a container, which comprises a pressure transmitter body, a connector is arranged at the bottom end of the pressure transmitter body, a sealing groove is arranged on the outer wall of the pressure transmitter body above the connector, a lower air bag is arranged in the sealing groove, and a lower air bag is arranged in the lower air bag. A lower air bag is arranged in the pressure transmitter body, a limiting sleeve is fixed outside the pressure transmitter body above the lower air bag, an upper air bag is arranged in the limiting sleeve, a screw cover is sleeved on the outer wall of the pressure transmitter body above the limiting sleeve, and a gland is sleeved on the outer wall of the pressure transmitter body below the screw cover. The sealing device has the advantages that the sealing function can be achieved through rotation and downward pressing, operation is easy and convenient, and the hidden danger of leakage is greatly reduced.

Description

Technical Field

[0001] This utility model is a pressure transmitter for a container, belonging to the field of pressure transmitters. Background Technology

[0002] A pressure transmitter is a device that converts pressure into pneumatic or electrical signals for control and remote transmission. It can convert the physical pressure parameters of gas, liquid, etc., sensed by the pressure sensing element sensor into standard electrical signals, which are then supplied to secondary instruments such as indicators, alarms, recorders, and controllers for measurement, indication, and process regulation. Pressure transmitters are characterized by high precision, stability, reliability, good linearity, and strong anti-interference ability, and are widely used in pressure measurement in various industrial production processes.

[0003] In the prior art, when pressure transmitters are installed on gas or liquid containers, they are usually connected to the container's detection interface through a threaded connector at the end of the pressure transmitter. Since leakage at the connection will affect the accuracy of the detection, a sealing structure is generally set at the pressure transmitter connector to ensure its sealing with the container's detection interface. In the prior art, some sealing structures are sealing airbag rings, which are sealed by inflating the airbag rings. However, the inflation operation is relatively troublesome, and there is a risk of air leakage at the inflation port. Therefore, there is an urgent need for improvement. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure transmitter for a container to solve the problem mentioned in the background technology that the inflation operation of the air bladder ring is relatively troublesome.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure transmitter for a container, comprising a pressure transmitter body, a connector mounted at the bottom end of the pressure transmitter body, and a first external thread with equal spacing provided on the outer surface of the connector, a detection head mounted at the bottom end of the connector, a display screen mounted on the surface of the pressure transmitter body, a sealing groove provided on the outer wall of the pressure transmitter body above the connector, and a lower air bladder provided inside the sealing groove, a limiting sleeve fixed to the outside of the pressure transmitter body above the lower air bladder, and an upper air bladder provided inside the limiting sleeve, a screw cap fitted on the outer wall of the pressure transmitter body above the limiting sleeve, and a pressure cap fitted on the outer wall of the pressure transmitter body below the screw cap, a pipe groove provided at the bottom end of the limiting sleeve, and an air supply pipe connected to the bottom end of the upper air bladder, the air supply pipe passing through the pipe groove and communicating with the lower air bladder.

[0006] Furthermore, wiring pipes are installed on the two outer walls at the top of the pressure transmitter body, and there are two wiring pipes in total.

[0007] Furthermore, the inner wall of the spiral cap is provided with an internal thread groove, and the outer wall of the pressure transmitter body at the position of the internal thread groove is provided with a second external thread, which meshes with the internal thread groove.

[0008] Furthermore, the upper airbag and the lower airbag are annular structures, the bottom surface of the upper airbag is bonded to the limiting sleeve with adhesive, and the inner wall of the upper airbag is bonded to the sealing groove with adhesive.

[0009] Furthermore, a right-angle locking block is fixed to the top of the cap, and the right-angle locking block engages with the stepped annular groove on the inner wall of the bottom of the screw cap.

[0010] Furthermore, the outer wall of the pressure cap is tightly fitted to the inner wall of the limiting sleeve, and the bottom end of the pressure cap is tightly fitted to the upper airbag.

[0011] The beneficial effects of this utility model are:

[0012] By rotating the screw cap, it moves downward under the action of the second external thread. Since the pressure cap is movably connected to the screw cap through a right-angle locking block and a stepped annular groove, the downward rotation of the screw cap causes the pressure cap to move vertically downward. The pressure cap squeezes the upper air bladder inside the limiting sleeve, allowing the air in the upper air bladder to enter the lower air bladder inside the sealing groove through the air supply pipe. After the lower air bladder is inflated, it expands and fills the gap between the outer wall of the pressure transmitter body and the inner wall of the container detection interface, thus achieving a sealing effect. This design improves upon existing technology, achieving the sealing function simply by rotating and pressing down, without the need for inflation. The structural design is reasonable and ingenious, the operation is simple, and the upper air bladder, air supply pipe, and lower air bladder are all fully sealed structures, greatly reducing the risk of leakage. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a three-dimensional structural diagram of a pressure transmitter for a container according to the present invention;

[0015] Figure 2 This is a cross-sectional structural schematic diagram of a pressure transmitter for a container according to the present invention;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the lower air bladder sealing state of a pressure transmitter for a container according to this utility model;

[0018] In the diagram: 1. Pressure transmitter body; 2. Wiring pipe; 3. Screw cap; 4. Limit sleeve; 5. Sealing groove; 6. Lower air bladder; 7. Connector; 8. First external thread; 9. Display screen; 10. Upper air bladder; 11. Air supply pipe; 12. Pipe groove; 13. Second external thread; 14. Internal thread groove; 15. Gland; 16. Right-angle locking block; 17. Stepped annular groove; 18. Detection head. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a pressure transmitter for a container, including a pressure transmitter body 1, a connector 7 installed at the bottom end of the pressure transmitter body 1, and a first external thread 8 with equal spacing provided on the outer surface of the connector 7, a detection head 18 installed at the bottom end of the connector 7, and a display screen 9 installed on the surface of the pressure transmitter body 1.

[0021] Specifically, when the pressure transmitter is installed on the container, the pressure transmitter body 1 is installed at the detection interface of the container through the connector 7, and the connector 7 is threadedly connected to the detection interface through the first external thread 8.

[0022] Please see Figure 3-4 A sealing groove 5 is provided on the outer wall of the pressure transmitter body 1 above the connector 7, and a lower air bladder 6 is provided inside the sealing groove 5. A limit sleeve 4 is fixed on the outside of the pressure transmitter body 1 above the lower air bladder 6, and an upper air bladder 10 is provided inside the limit sleeve 4. A screw cap 3 is fitted on the outer wall of the pressure transmitter body 1 above the limit sleeve 4, and a pressure cap 15 is fitted on the outer wall of the pressure transmitter body 1 below the screw cap 3.

[0023] The cross-section of the sealing groove 5 is rectangular;

[0024] Specifically, rotating the screw cap 3 causes it to move downward under the action of the second external thread 13. Since the pressure cap 15 is movably connected to the screw cap 3 through the right-angle locking block 16 and the stepped annular groove 17, the rotation and downward movement of the screw cap 3 causes the pressure cap 15 to move vertically downward. The pressure cap 15 squeezes the upper air bladder 10 inside the limiting sleeve 4, so that the air in the upper air bladder 10 enters the lower air bladder 6 inside the sealing groove 5 through the air supply pipe 11. After the lower air bladder 6 is inflated, it expands and fills the gap between the outer wall of the pressure transmitter body 1 and the inner wall of the container detection interface, thus playing a sealing role. The sealing function can be achieved by rotating and pressing down, without the need for inflation. The structural design is reasonable and ingenious, and the operation is simple.

[0025] The bottom end of the limiting sleeve 4 is provided with a tube groove 12, and the bottom end of the upper airbag 10 is connected to an air supply pipe 11, which passes through the tube groove 12 and communicates with the lower airbag 6.

[0026] Furthermore, the upper airbag 10, the air supply pipe 11, and the lower airbag 6 are all fully sealed structures, which greatly reduces the risk of leakage and thus ensures the accuracy of the pressure transmitter detection.

[0027] The gas supply pipes 11 are provided in two sets and are symmetrically distributed on the left and right sides, so that when the upper airbag 10 is squeezed, the gas in the upper airbag 10 can be evenly introduced into the lower airbag 6.

[0028] The outer surface of the screw cap 3 is provided with anti-slip texture to facilitate rotating the screw cap 3;

[0029] Two wiring pipes 2 are installed on the two outer walls at the top of the pressure transmitter body 1.

[0030] The inner wall of the screw cap 3 is provided with an internal thread groove 14, and the outer wall of the pressure transmitter body 1 at the position of the internal thread groove 14 is provided with a second external thread 13, which meshes with the internal thread groove 14.

[0031] The upper airbag 10 and the lower airbag 6 are annular structures. The bottom surface of the upper airbag 10 is bonded to the limiting sleeve 4 with adhesive, and the inner wall of the upper airbag 10 is bonded to the sealing groove 5 with adhesive.

[0032] The top of the cap 15 is fixed with a right-angle locking block 16, and the right-angle locking block 16 engages with the stepped annular groove 17 on the inner wall of the bottom of the screw cap 3.

[0033] The outer wall of the pressure cap 15 is tightly fitted to the inner wall of the limiting sleeve 4, and the bottom end of the pressure cap 15 is tightly fitted to the upper airbag 10.

[0034] Detailed Implementation: When installing the pressure transmitter on the container, firstly, the pressure transmitter body 1 is installed at the detection interface of the container via connector 7. Connector 7 is threadedly connected to the detection interface via the first external thread 8. Secondly, the screw cap 3 is rotated to move downward under the action of the second external thread 13. Since the pressure cap 15 is movably connected to the screw cap 3 via the right-angle locking block 16 and the stepped annular groove 17, the downward rotation of the screw cap 3 causes the pressure cap 15 to move vertically downward. The pressure cap 15 squeezes the upper air bladder 10 inside the limiting sleeve 4, causing the upper air... Air in bladder 10 enters the lower bladder 6 inside the sealing groove 5 through air supply pipe 11. After the lower bladder 6 is inflated, it expands and fills the gap between the outer wall of the pressure transmitter body 1 and the inner wall of the container detection interface, thus playing a sealing role. This design improves on the existing technology. The sealing function can be achieved by rotating and pressing down without inflation. The structure is reasonable and ingenious, and the operation is simple. Moreover, the upper bladder 10, air supply pipe 11, and lower bladder 6 are all fully sealed structures, which greatly reduces the risk of leakage and thus ensures the accuracy of the pressure transmitter detection.

[0035] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure transmitter of a container, comprising a pressure transmitter body (1), a connecting head (7) is installed at the bottom end of the pressure transmitter body (1), and equidistant first external threads (8) are arranged on the outer surface of the connecting head (7), a detection head (18) is installed at the bottom end of the connecting head (7), and a display screen (9) is installed on the surface of the pressure transmitter body (1), characterized in that: The sealing groove (5) is arranged on the outer wall of the pressure transmitter body (1) above the connector (7), and the lower air bag (6) is arranged in the sealing groove (5); the limiting sleeve (4) is fixed on the outer wall of the pressure transmitter body (1) above the lower air bag (6), and the upper air bag (10) is arranged in the limiting sleeve (4); the screw cover (3) is sleeved on the outer wall of the pressure transmitter body (1) above the limiting sleeve (4), and the gland (15) is sleeved on the outer wall of the pressure transmitter body (1) below the screw cover (3); the pipe groove (12) is arranged at the bottom end of the limiting sleeve (4), the gas conveying pipe (11) is connected to the bottom end of the upper air bag (10), and the gas conveying pipe (11) penetrates through the pipe groove (12) and communicates with the lower air bag (6).

2. A pressure transmitter for a vessel according to claim 1, characterized in that: The wiring pipe (2) is arranged on the two outer walls of the top of the pressure transmitter body (1), and two wiring pipes (2) are arranged.

3. A pressure transmitter for a vessel according to claim 1, wherein: The inner thread groove (14) is arranged on the inner wall of the screw cover (3), and the second outer thread (13) is arranged on the outer wall of the pressure transmitter body (1) at the position of the inner thread groove (14), and the second outer thread (13) is engaged with the inner thread groove (14).

4. A pressure transmitter for a vessel according to claim 1, wherein: The upper air bag (10) and the lower air bag (6) are annular structures, the bottom surface of the upper air bag (10) is adhered to the limiting sleeve (4) by an adhesive, and the inner wall of the upper air bag (10) is adhered to the sealing groove (5) by an adhesive.

5. A pressure transmitter for a vessel according to claim 1, wherein: The right-angle clamping block (16) is fixed at the top end of the gland (15), and the right-angle clamping block (16) is clamped in the stepped ring groove (17) on the bottom inner wall of the screw cover (3).

6. A pressure transmitter for a vessel according to claim 1, wherein: The outer wall of the gland (15) is tightly attached to the inner wall of the limiting sleeve (4), and the bottom end of the gland (15) is tightly attached to the upper air bag (10).

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