Capacitive pressure measuring device

Abstract

The utility model discloses a capacitive pressure measuring device, which relates to the technical field of capacitive pressure sensors and comprises an outer shell. A variable capacitance pressure sensing element is arranged on the inner side of the base, a protection frame is fixedly connected to the inner side of the bottom end of the base, an inner groove is formed in the inner side of the protection frame, and the variable capacitance pressure sensing element is arranged on the inner side of the inner groove; and a rubber pad is arranged on one side of the inner side of the inner groove. According to the utility model, the variable capacitance pressure sensing element and the protection frame are arranged, the variable capacitance pressure sensing element can be arranged on the inner side of the protection frame, and the pressing plate is arranged on one side of the protection frame, so that the variable capacitance pressure sensing element can be effectively pressed on the inner side of the protection frame; the top plate is fixedly installed through the fastening bolt, when the variable capacitance pressure sensing element needs to be rapidly replaced, the top plate can be conveniently taken down, and meanwhile, the pressing of the pressing plate is relieved, so that the variable capacitance pressure sensing element can be conveniently and rapidly replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of capacitive pressure sensor, especially relates to a capacitive pressure measuring device. BACKGROUND

[0002] Capacitive pressure measuring device, namely capacitive pressure sensor or capacitive pressure gauge, is a commonly used high-precision pressure measuring equipment.

[0003] The existing capacitive pressure sensor is used for a long time, and the variable capacitance pressure sensing element is arranged in the internal thereof, but the variable capacitance pressure sensing element arranged in the internal thereof is prone to damage due to water vapor breeding in the internal thereof caused by different environmental temperatures when the capacitive pressure sensor is used in different working environments, and the capacitive pressure sensor needs to be replaced once the variable capacitance pressure sensing element is damaged, which is inconvenient for replacing the sensing element arranged in the internal thereof and causes waste.

[0004] Therefore, it is necessary to provide a capacitive pressure measuring device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a capacitive pressure measuring device, the inside of base is provided with variable capacitance pressure sensing element, the bottom of base inside is provided with the protection frame, and the variable capacitance pressure sensing element can be arranged in the inside of protection frame, one side of protection frame is provided with the pressing plate, can effectively tightly press variable capacitance pressure sensing element in the inside of protection frame, and the top of base is provided with the top plate, and the top plate is fixed and installed through the fastening bolt, when needing quick replacement variable capacitance pressure sensing element, can conveniently take down top plate, and simultaneously release the tightness of pressing plate, thereby conveniently quick replacement variable capacitance pressure sensing element, to solve the problem that the existing capacitive pressure sensor is used in the background art, and the variable capacitance pressure sensing element is arranged in the internal thereof due to long time use, but the variable capacitance pressure sensing element arranged in the internal thereof is prone to damage due to water vapor breeding in the internal thereof caused by different environmental temperatures when the capacitive pressure sensor is used in different working environments, and the capacitive pressure sensor needs to be replaced once the variable capacitance pressure sensing element is damaged, which is inconvenient for replacing the sensing element arranged in the internal thereof and causes waste.

[0006] According to one aspect of the present disclosure, a capacitive pressure measuring device is provided, which includes an outer shell, a base is arranged at the bottom end of the outer shell, and a communication pipe is arranged at one side of the base.

[0007] The inner side of the base is provided with a variable capacitance pressure sensing element, the inner side of the bottom end of the base is fixedly connected with a protective frame, the inner side of the protective frame is provided with an inner groove, and the variable capacitance pressure sensing element is arranged on the inner side of the inner groove.

[0008] One side of the inner side of the inner groove is provided with a rubber pad, and the other side of the inner side of the inner groove is provided with a pressing plate.

[0009] The outer side of the base is provided with an adjusting bolt, the adjusting bolt is threadedly connected to the inner side of the base, and the output end of the adjusting bolt is rotatably connected to the inner side of the pressing plate.

[0010] According to at least one embodiment of the present disclosure, a capacitive pressure measurement device, the top end of the base is provided with a top plate, the inner side of the base is provided with a mounting block, and the top plate is arranged on the top end of the mounting block.

[0011] According to at least one embodiment of the present disclosure, a capacitive pressure measurement device, the top end of the top plate is provided with a mounting ring, the four corners of the top plate are provided with fastening bolts, and the top plate is fixedly connected to the top end of the mounting block through the fastening bolts.

[0012] According to at least one embodiment of the present disclosure, a capacitive pressure measurement device, one side of the variable capacitance pressure sensing element is provided with a jack, one side of the communication pipe is fixedly connected with a connecting ring, and the connecting ring is arranged on the inner side of the jack.

[0013] According to at least one embodiment of the present disclosure, a capacitive pressure measurement device, the top end of the shell body is provided with a fixing ring, the top end of the fixing ring is provided with a mounting rod, and the outer side of the bottom end of the shell body is provided with a threaded ring.

[0014] The technical effects and advantages of the present application are as follows:

[0015] (1) The variable capacitance pressure sensing element is arranged on the inner side of the base, the bottom end of the inner side of the base is provided with a protective frame, the variable capacitance pressure sensing element can be arranged on the inner side of the protective frame, one side of the protective frame is provided with a pressing plate, the variable capacitance pressure sensing element can be tightly pressed on the inner side of the protective frame, the top end of the base is provided with a top plate, and the top plate is fixedly installed through fastening bolts. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description, explain the principles of the present disclosure, wherein the drawings are included to provide further understanding of the present disclosure and are incorporated in and constitute a part of the specification.

[0017] Fig. 1 This is a schematic diagram of the overall structure of a capacitive pressure measuring device according to one embodiment of the present disclosure.

[0018] Fig. 2 This is a schematic diagram of the main structure of the base in a capacitive pressure measuring device according to one embodiment of the present disclosure.

[0019] Fig. 3 This is a schematic diagram of the internal structure of the base in a capacitive pressure measuring device according to one embodiment of the present disclosure.

[0020] The specific labels in the attached figures are as follows:

[0021] 1. Outer shell; 11. Threaded ring; 12. Retaining ring; 13. Mounting rod;

[0022] 2. Base; 21. Connecting pipe; 22. Connecting ring; 23. Mounting block;

[0023] 3. Top plate; 31. Mounting ring;

[0024] 4. Tighten the bolts;

[0025] 5. Adjusting bolts; 51. Pressure plate;

[0026] 6. Protective frame; 61. Inner groove; 62. Rubber pad;

[0027] 7. Variable capacitive pressure sensing element; 71. Socket. Detailed Implementation

[0028] like Figs. 1-3 As shown, a capacitive pressure measuring device disclosed herein may include: a housing 1, a base 2 provided at the bottom end of the housing 1, a connecting pipe 21 provided on one side of the base 2, a fixing ring 12 provided at the top end of the housing 1, an mounting rod 13 provided at the top end of the fixing ring 12, and a threaded ring 11 provided on the outer side of the bottom end of the housing 1.

[0029] A variable capacitive pressure sensing element 7 is provided on the inner side of the base 2. A protective frame 6 is fixedly connected to the inner side of the bottom end of the base 2. An inner groove 61 is provided on the inner side of the protective frame 6. The variable capacitive pressure sensing element 7 is located on the inner side of the inner groove 61.

[0030] A rubber pad 62 is provided on one side of the inner side of the inner groove 61, and a pressure plate 51 is provided on the other side of the inner groove 61.

[0031] An adjusting bolt 5 is provided on the outer side of the base 2. The adjusting bolt 5 is threaded to the inner side of the base 2, and the output end of the adjusting bolt 5 is rotatably connected to the inner side of the pressure plate 51.

[0032] Therefore, by providing a variable capacitor pressure sensing element 7 on the inner side of the base 2, and a protective frame 6 at the bottom of the inner side of the base 2, the variable capacitor pressure sensing element 7 can be installed inside the protective frame 6. A pressure plate 51 is provided on one side of the protective frame 6, which can effectively press the variable capacitor pressure sensing element 7 into the inner side of the protective frame 6. A top plate 3 is provided at the top of the base 2, and the top plate 3 is fixedly installed by fastening bolts 4. When it is necessary to quickly replace the variable capacitor pressure sensing element 7, the top plate 3 can be easily removed, and the pressure plate 51 can be released at the same time, thus facilitating the quick replacement of the variable capacitor pressure sensing element 7.

[0033] like Fig. 3 As shown, in a preferred embodiment, a top plate 3 is provided at the top of the base 2, an mounting block 23 is provided on the inner side of the base 2, the top plate 3 is provided at the top of the mounting block 23, an mounting ring 31 is provided at the top of the top plate 3, and fastening bolts 4 are provided at the four corners of the top plate 3. The top plate 3 is fixedly connected to the top of the mounting block 23 by the fastening bolts 4.

[0034] Therefore, by setting the mounting ring 31, the outer shell 1 can be fixedly connected to the outside of the mounting ring 31, while the cable can enter the inner side of the base 2 from the inner side of the mounting ring 31. By setting the fastening bolt 4, the fastening bolt 4 can fix the top plate 3 to the top of the base 2, that is, fix it to the top of the mounting block 23, so that the top plate 3 can be removed, thereby replacing the variable capacitor pressure sensing element 7 set inside the base 2.

[0035] like Fig. 3 As shown, in a preferred embodiment, a socket 71 is provided on one side of the variable capacitive pressure sensing element 7, and a connecting ring 22 is fixedly connected to one side of the connecting tube 21. The connecting ring 22 is located inside the socket 71.

[0036] Therefore, by setting the variable capacitive pressure sensing element 7, the variable capacitive pressure sensing element 7 can slide inside the inner groove 61, thereby moving the variable capacitive pressure sensing element 7 close to the connecting ring 22, which facilitates the insertion of the connecting ring 22 into the inner side of the socket 71, thereby enabling the connecting ring 22 and the variable capacitive pressure sensing element 7 to be electrically connected to each other.

[0037] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A capacitive pressure measuring device, comprising an outer shell (1), the bottom end of the outer shell (1) is provided with a base (2), one side of the base (2) is provided with a communication pipe (21); characterized in that The inner side of the base (2) is provided with a variable capacitance pressure sensing element (7), the inner side of the bottom end of the base (2) is fixedly connected with a protective frame (6), the inner side of the protective frame (6) is provided with an inner groove (61), the variable capacitance pressure sensing element (7) is arranged on the inner side of the inner groove (61); One side of the inner side of the inner groove (61) is provided with a rubber pad (62), the other side of the inner side of the inner groove (61) is provided with a pressing plate (51); The outer side of the base (2) is provided with an adjusting bolt (5), the adjusting bolt (5) is threadedly connected to the inner side of the base (2), and the output end of the adjusting bolt (5) is rotatably connected to the inner side of the pressing plate (51).

2. A capacitive pressure measuring device according to claim 1, characterized in that: The top end of the base (2) is provided with a top plate (3), and the inner side of the base (2) is provided with a mounting block (23), and the top plate (3) is arranged on the top end of the mounting block (23).

3. A capacitive pressure measuring device according to claim 2, characterized in that: The top end of the top plate (3) is provided with a mounting ring (31), and the four corners of the top plate (3) are provided with fastening bolts (4), and the top plate (3) is fixedly connected to the top end of the mounting block (23) through the fastening bolts (4).

4. A capacitive pressure measuring device according to claim 3, characterized in that: One side of the variable capacitance pressure sensing element (7) is provided with a jack (71), one side of the communication pipe (21) is fixedly connected with a connecting ring (22), and the connecting ring (22) is arranged on the inner side of the jack (71).

5. A capacitive pressure measuring device according to claim 4, characterized in that: The top end of the outer shell (1) is provided with a fixing ring (12), the top end of the fixing ring (12) is provided with a mounting rod (13), and the outer side of the bottom end of the outer shell (1) is provided with a threaded ring (11).

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