Plug-in pressure gauge

Abstract

The utility model relates to the technical field of pressure gauges, in particular to a plug-in type pressure gauge, which comprises a plug-in cylinder, and the top of the plug-in cylinder is fixedly connected with a diaphragm seat. A diaphragm is arranged at the top of the diaphragm seat, a base is arranged at the bottom, and a containing cavity is formed between the diaphragm and the base; the base is connected with the front end of a capillary I; the rear end of the first capillary is connected with a pressure gauge, and the front end of the first capillary is located in the containing cavity. The front end of the capillary tube II is positioned in the accommodating cavity, and the rear end of the capillary tube II is positioned on the outer side of the insertion cylinder; the rear end of the capillary tube I is communicated with an injection hole; the rear end of the capillary tube II and the injection hole are connected with plugs; according to the utility model, through the arrangement of the second capillary tube and the injection hole, when the plug-in pressure gauge is vacuumized, the rear end of the second capillary tube and the injection hole are both connected with the vacuumizing device, two ends are vacuumized, and the vacuumizing effect is better; after vacuumizing, the interior of the plug-in pressure gauge is filled with silicone oil, and the silicone oil is fully filled, so that higher measurement precision is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure gauge technical field, specifically is a plug -in pressure gauge. BACKGROUND

[0002] The patent with the application number 201821183967.8 discloses a remote transmission assembly for a remote transmission pressure transmitter, which comprises a remote transmission component, a tantalum diaphragm covering the outer surface of the remote transmission component, a fluorine sleeve and a fluorine cover, and a fluorine rubber sealing ring for sealing the tantalum diaphragm, the fluorine sleeve and the fluorine cover; the remote transmission component comprises a flange, an insertion cylinder, a base, a tantalum diaphragm, a capillary tube and a fixing block.

[0003] The patent with the application number 201821183967.8 has the following disadvantages: only one filling hole is provided for injecting filling liquid into the remote transmission pressure transmitter, and the air in the remote transmission pressure transmitter cannot be completely exhausted during vacuumization, resulting in that the remote transmission pressure transmitter contains air after filling, and the measurement accuracy is poor. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a plug-in pressure gauge to solve the problem that the air in the remote transmission pressure transmitter cannot be completely exhausted during vacuumization in the prior art, resulting in that the remote transmission pressure transmitter contains air after filling, and the measurement accuracy is poor.

[0005] In order to achieve the above purpose, the utility model provides a plug-in pressure gauge, which comprises an insertion cylinder, the top of the insertion cylinder is fixedly connected with a diaphragm seat; the top of the diaphragm seat is provided with a diaphragm, the bottom is provided with a base, and a containing cavity is arranged between the diaphragm and the base; the base is connected with the front end of a capillary tube one; the rear end of the capillary tube one is connected with a pressure gauge, and the front end of the capillary tube one is located in the containing cavity; the base is fixedly connected with a capillary tube two, the front end of the capillary tube two is located in the containing cavity, and the rear end is located outside the insertion cylinder; the rear end of the capillary tube one is communicated with a filling hole; the rear end of the capillary tube two and the filling hole are both connected with a plug.

[0006] Further, the rear end of the capillary tube one is connected with the pressure gauge through a pressure connector, and the filling hole is arranged on the pressure connector.

[0007] Further, the bottom of the insertion cylinder is fixedly connected with a flange, and a part of the capillary tube one and the capillary tube two is located inside the insertion cylinder.

[0008] Further, the outside of the part of the capillary tube one close to the pressure connector is sleeved with a protective sleeve one.

[0009] Further, the outside of the part of the capillary tube one close to the flange is sleeved with a protective sleeve two.

[0010] Furthermore, the insertion tube has a through hole inside for capillary tube one and capillary tube two to pass through.

[0011] This invention, by setting up a second capillary tube and an injection hole, connects the rear end of the second capillary tube and the injection hole to a vacuuming device when evacuating the insertion pressure gauge, thus evacuating from both ends and achieving a better vacuuming effect. After evacuation, silicone oil is injected into the insertion pressure gauge, and the full filling of silicone oil ensures higher accuracy during measurement. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0013] Figure 1 This is a schematic diagram of the insertion pressure gauge in the embodiment;

[0014] In the diagram: 1. Insertion tube; 2. Diaphragm seat; 201. Receiving cavity; 202. Diaphragm; 203. Base; 3. Capillary tube one; 4. Pressure gauge; 5. Capillary tube two; 6. Injection hole; 7. Pressure connector; 8. Protective sleeve one; 9. Protective sleeve two; 10. Flange; 11. Double-hole connector. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown, according to an embodiment of the present invention, an insertion pressure gauge is provided, including an insertion cylinder 1, a diaphragm seat 2 fixedly connected to the top of the insertion cylinder 1; a diaphragm 202 is provided at the top of the diaphragm seat 2, a base 203 is provided at the bottom, and a receiving cavity 201 is provided between the diaphragm 202 and the base 203; the front end of a capillary tube 3 is connected to the base 203; a pressure gauge 4 is connected to the rear end of the capillary tube 3, and the front end of the capillary tube 3 is located inside the receiving cavity 201; a second capillary tube 5 is fixedly connected to the base 203, the front end of the second capillary tube 5 is located inside the receiving cavity 201, and the rear end is located outside the insertion cylinder 1; an injection hole 6 is connected to the rear end of the capillary tube 3; both the rear end of the second capillary tube 5 and the injection hole 6 are connected with plugs.

[0017] Both capillary tube 1 (3) and capillary tube 2 (5) are connected to a double-hole connector 11 at their front ends.

[0018] The rear end of the capillary tube 3 is connected to a pressure gauge 4 via a pressure connector 7, and the pressure connector 7 is provided with an injection hole 6.

[0019] A flange 10 is fixedly connected to the bottom of the insertion cylinder 1, and a portion of capillary tube 3 and capillary tube 5 are located inside the insertion cylinder 1; the insertion cylinder 1 has a through hole for capillary tube 3 and capillary tube 5 to pass through.

[0020] A protective sleeve 8 is fitted on the outer side of the portion of capillary tube 3 near the pressure connector 7; a protective sleeve 9 is fitted on the outer side of the portion of capillary tube 3 near the flange 10.

[0021] The measurement principle of the insertion pressure gauge is as follows: when the diaphragm seat is compressed, the pressure is transmitted to pressure gauge 4 through the silicone oil, and pressure gauge 4 displays the pressure value; the insertion pressure gauge is filled with silicone oil and does not contain air, which is crucial to the accuracy of the insertion pressure gauge.

[0022] Before injecting silicone oil into the insertion pressure gauge, it is necessary to evacuate the gauge. During evacuation, connect the rear end of capillary tube 2 (5) and injection port 6 to the vacuum device. Evacuating from both ends results in a better vacuum effect and less residual air. After evacuation, inject silicone oil into the insertion pressure gauge through injection port 6. Once the silicone oil flows out from the rear end of capillary tube 2 (5), the injection is complete. After injection, seal injection port 6 and the rear end of capillary tube 2 (5). After injection, the insertion pressure gauge is almost free of air, and the full filling with silicone oil ensures higher measurement accuracy.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An insertion pressure gauge, comprising an insertion cylinder (1), wherein a diaphragm seat (2) is fixedly connected to the top of the insertion cylinder (1); a diaphragm (202) is provided at the top of the diaphragm seat (2), and a base (203) is provided at the bottom, wherein a receiving cavity (201) is provided between the diaphragm (202) and the base (203); the front end of a capillary tube (3) is connected to the base (203); a pressure gauge (4) is connected to the rear end of the capillary tube (3), wherein the front end of the capillary tube (3) is located within the receiving cavity (201); characterized in that, The base (203) is fixedly connected to a second capillary tube (5). The front end of the second capillary tube (5) is located inside the receiving cavity (201), and the rear end is located outside the insertion tube (1). The rear end of the first capillary tube (3) is connected to an injection hole (6). Both the rear end of the second capillary tube (5) and the injection hole (6) are connected to plugs.

2. The insertion pressure gauge as described in claim 1, characterized in that, The rear end of the capillary tube (3) is connected to a pressure gauge (4) via a pressure connector (7), and the pressure connector (7) is provided with an injection hole (6).

3. The insertion pressure gauge as described in claim 1, characterized in that, The bottom of the insertion tube (1) is fixedly connected to a flange (10), and a portion of the first capillary tube (3) and the second capillary tube (5) are located inside the insertion tube (1).

4. The insertion pressure gauge as described in claim 2, characterized in that, The outer side of the portion of the capillary tube (3) near the pressure connector (7) is fitted with a protective sleeve (8).

5. The insertion pressure gauge as described in claim 3, characterized in that, The outer side of the portion of the capillary tube one (3) near the flange (10) is fitted with a protective sleeve two (9).

6. The insertion pressure gauge as described in claim 3, characterized in that, The insertion tube (1) has a through hole for capillary tube one (3) and capillary tube two (5) to pass through.

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