Shock resistant cushioned pressure gauge

Abstract

The utility model discloses a shock resistance buffer pressure gauge relates to pressure gauge technical field, including the table head and the table seat, the table seat is from top to bottom and is sequentially provided with the conduction cavity, buffer chamber, sliding seal cavity and pressure chamber of intercommunication, be provided with buffer assembly in the buffer chamber, the sliding seal cavity is provided with the conduction piece sliding, the both ends of conduction piece extend to buffer chamber and pressure chamber in respectively, the lower extreme of pressure chamber is linked together with the pipeline, be provided with diaphragm in the pressure chamber, fill with buffer medium between the end face of diaphragm and conduction piece, buffer assembly includes connecting post and return spring, the connecting post is sleeved in return spring, the input of transmission mechanism in the table head is fixedly connected with the conduction rod, one end of conduction rod is located in the conduction cavity, the one end of connecting post is away from sliding seal cavity and is worn out buffer chamber and is abutted with conduction rod, and this device has the characteristics of improving the shock resistance and buffer effect of pressure gauge.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, specifically a shock-resistant and buffered pressure gauge. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than ambient pressure. It is widely used and can be found in almost all industrial processes and scientific research fields.

[0003] The working principle of a pressure gauge is that the elastic deformation of the sensitive element (Bourdon tube, diaphragm, bellows) inside the gauge is transmitted to the pointer by the conversion mechanism inside the gauge, causing the pointer to rotate to display the pressure.

[0004] When traditional pressure gauges operate in vibrating environments (such as industrial pipelines and hydraulic machinery), fluctuations in medium pressure can easily cause the pointer to shake violently, affecting the accuracy of readings and the lifespan of the instrument. Therefore, it is necessary to design a shock-resistant and buffered pressure gauge with good shock resistance and buffering effect. Utility Model Content

[0005] The purpose of this invention is to provide a shock-resistant and buffered pressure gauge to address the shortcomings of existing technologies and solve the problems mentioned in the background section.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a shock-resistant buffer pressure gauge, including a gauge head and a gauge base. The gauge base contains, from top to bottom, interconnected conductive chambers, buffer chambers, sliding sealing chambers, and pressure chambers. A buffer assembly is disposed within the buffer chamber, and a conductive element is slidably disposed within the sliding sealing chamber. Both ends of the conductive element extend into the buffer chamber and the pressure chamber, respectively. The lower end of the pressure chamber is connected to a pipeline. A diaphragm is disposed within the pressure chamber, and a buffer medium is filled between the diaphragm and the end face of the conductive element. The buffer assembly includes a connecting post and a return spring. The connecting post is sleeved within the return spring. A conductive rod is fixedly connected to the input end of the transmission mechanism within the gauge head. One end of the conductive rod is located within the conductive chamber. The end of the connecting post away from the sliding sealing chamber extends out of the buffer chamber and abuts against the conductive rod. The ends of the connecting post and the return spring away from the gauge head both abut against the conductive element. The end of the return spring near the gauge head abuts against the end face of the buffer chamber.

[0007] This invention further explains that the inner diameter of the sliding sealing cavity is smaller than the inner diameters of the buffer cavity and the pressure cavity, and the inner diameter of the conducting cavity is smaller than the inner diameter of the buffer cavity.

[0008] This utility model further explains that the conductive element is a columnar body with an "I"-shaped cross-section.

[0009] The present invention further explains that the conductive member includes, from top to bottom, an abutting section, a sliding section, and a contact section, wherein the abutting section and the contact section are threadedly connected to the sliding section.

[0010] The present invention further explains that the contact section is a cylinder that matches the diameter of the inner wall of the pressure chamber, and a sealing ring is embedded at both ends of the outer circumferential surface of the contact section along the length direction, and the outer circumferential surface of the abutment section is in contact with the inner wall of the buffer chamber.

[0011] The present invention further explains that sealing rings are embedded at both ends of the inner wall of the sliding sealing cavity along its axial direction, and the sealing rings form a sealed sliding connection with the sliding section of the conductive element.

[0012] This invention further illustrates that the outer wall of the reset spring is in contact with the inner wall of the buffer cavity.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are: by setting up a buffer component and a buffer medium, this utility model achieves a double shock absorption buffering effect.

[0014] Multiple sealing and leakage prevention effects are achieved by setting sealing ring one and sealing ring two. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the overall structure of this utility model;

[0018] Figure 3 This is the utility model Figure 2 A magnified schematic diagram of a portion of region A;

[0019] In the diagram: 1. Gauge head; 2. Gauge base; 3. Buffer chamber; 4. Sliding sealing chamber; 5. Pressure chamber; 6. Buffer assembly; 7. Transmitter; 8. Connecting column; 9. Return spring; 10. Transmitter rod; 11. Abutment section; 12. Sliding section; 13. Contact section; 14. Sealing ring one; 15. Sealing ring two; 16. Diaphragm. Detailed Implementation

[0020] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-3 The present invention provides a technical solution: a shock-resistant and buffer pressure gauge, including a gauge head 1 and a gauge base 2. The gauge base 2 is cylindrical. From top to bottom, a transmission cavity, a buffer cavity 3, a sliding sealing cavity 4, and a pressure cavity 5 are arranged inside the gauge base 2. The transmission cavity, buffer cavity 3, sliding sealing cavity 4, and pressure cavity 5 are interconnected. The inner diameter of the sliding sealing cavity 4 is smaller than the inner diameter of the buffer cavity 3 and the pressure cavity 5, and the inner diameter of the transmission cavity is smaller than the inner diameter of the buffer cavity 3.

[0022] The transmission cavity is connected to the inside of the meter head 1. The input end of the transmission component inside the meter head 1 is fixedly connected to the transmission rod 10, and one end of the transmission rod 10 passes through the transmission cavity.

[0023] A buffer assembly 6 is provided in the buffer chamber 3, and a conductive element 7 is slidably provided in the sliding sealing chamber 4. The two ends of the conductive element 7 extend into the buffer chamber 3 and the pressure chamber 5 respectively. The lower end of the pressure chamber 5 is connected to the pipeline, so that the medium can enter the pressure chamber 5.

[0024] The buffer assembly 6 includes a connecting post 8 and a return spring 9. The connecting post 8 is sleeved inside the return spring 9. The outer wall of the return spring 9 is in contact with the outer wall of the buffer cavity 3. The end of the return spring 9 near the meter 1 abuts against the end face of the buffer cavity 3.

[0025] The end of the connecting column 8 away from the sliding sealing cavity 4 extends out of the buffer cavity 3 and abuts against the transmission rod 10.

[0026] The end of the connecting column 8 and the return spring 99 away from the meter head 1 both abut against the conductive element 7, and the cross-sectional shape of the conductive element 7 is an "I" shaped column.

[0027] Low-friction pads (including but not limited to those made of ceramic or high-performance engineering plastic sheets) are provided between the connecting post 8 and the conductive element 7 and the conductive rod 10 to reduce wear caused by the contact between the connecting post 8 and the conductive element 7.

[0028] The transmission component 7 includes, from top to bottom, an abutment section 11, a sliding section 12, and a contact section 13, with the abutment section 11 and the contact section 13 threadedly connected to the sliding section 12.

[0029] The contact section 13 is a cylinder that matches the diameter of the inner wall of the pressure chamber 5. Both ends of the outer circumference of the contact section 13 along its length are fitted with sealing rings 14, thereby improving the sealing effect between the contact section 13 and the pressure chamber 5 through multiple seals and preventing the medium from entering the pressure chamber 5 on the upper side of the contact section 13.

[0030] The inner wall of the sliding sealing cavity 4 is fitted with sealing rings 15 at both ends along its axial direction to achieve a sealed sliding connection with the sliding section 12 of the transmission component 7, thereby preventing the buffer cavity 3 and the pressure cavity 5 from communicating.

[0031] A diaphragm 16 is provided inside the pressure chamber 5. A cavity is formed between the diaphragm 16 and the end face of the contact section 13 of the conductor 7. The cavity is filled with a buffer medium, which is a special instrument oil or silicone oil with a low expansion coefficient and good viscosity and temperature stability.

[0032] In this embodiment, the pressure gauge base 2 is fixedly connected to the pipeline to be tested. The medium in the pipeline is rushed into the pressure chamber 5 and exerts a certain squeezing force on the diaphragm 16. Under the action of the squeezing force, the diaphragm 16 undergoes elastic deformation towards the side closer to the conductor 7. Under the action of elastic deformation, the buffer medium is squeezed towards the conductor 7 and the conductor 7 slides towards the buffer chamber 3.

[0033] The sliding conductor 7 presses against the connecting post 8 of the buffer assembly 6. Under the pressure, the connecting post 8 acts on the transmission assembly inside the meter head 1, ultimately causing the pointer on the meter head 1 to change, allowing the observer to read the value.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A shock resistant cushioned pressure gauge, characterized by: The device includes a meter head (1) and a meter base (2). The meter base (2) contains, from top to bottom, interconnected conductive chambers, buffer chambers (3), sliding sealing chambers (4), and pressure chambers (5). A buffer assembly (6) is installed in the buffer chamber (3). A conductive element (7) is slidably installed in the sliding sealing chamber (4). Both ends of the conductive element (7) extend into the buffer chamber (3) and the pressure chamber (5), respectively. The lower end of the pressure chamber (5) is connected to a pipe. A diaphragm (16) is installed in the pressure chamber (5). A buffer medium is filled between the diaphragm (16) and the end face of the conductive element (7). The punch assembly (6) includes a connecting post (8) and a return spring (9). The connecting post (8) is sleeved inside the return spring (9). The input end of the transmission mechanism inside the meter head (1) is fixedly connected to a transmission rod (10). One end of the transmission rod (10) is located inside the transmission cavity. The end of the connecting post (8) away from the sliding sealing cavity (4) passes through the buffer cavity (3) and abuts against the transmission rod (10). The ends of the connecting post (8) and the return spring (9) away from the meter head (1) abut against the transmission component (7). The end of the return spring (9) near the meter head (1) abuts against the end face of the buffer cavity (3).

2. A shock resistant cushioned pressure gauge according to claim 1, wherein: The inner diameter of the sliding sealing cavity (4) is smaller than the inner diameter of the buffer cavity (3) and the pressure cavity (5), and the inner diameter of the conducting cavity is smaller than the inner diameter of the buffer cavity (3).

3. A shock resistant cushioned pressure gauge according to claim 2, wherein: The conductive element (7) is a column with an "I" shaped cross-section.

4. A shock resistant cushioned pressure gauge according to claim 3, wherein: The conductive element (7) includes, from top to bottom, an abutting section (11), a sliding section (12), and a contact section (13), and the abutting section (11) and the contact section (13) are threadedly connected to the sliding section (12).

5. A shock resistant cushioned pressure gauge according to claim 4, wherein: The contact section (13) is a cylinder that matches the diameter of the inner wall of the pressure chamber (5). Both ends of the outer circumference of the contact section (13) along the length direction are fitted with sealing rings (14). The outer circumference of the abutment section (11) is in contact with the inner wall of the buffer chamber (3).

6. A shock resistant cushioned pressure gauge according to claim 5, wherein: The inner wall of the sliding sealing cavity (4) is fitted with sealing rings (15) at both ends along its axial direction. The sealing rings (15) form a sealed sliding connection with the sliding section (12) of the conductor (7).

7. A shock resistant cushioned pressure gauge according to claim 6, wherein: The outer wall of the reset spring (9) is in contact with the inner wall of the buffer cavity (3).

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