Pulse detection device of ultrasonic gas meter

Abstract

The utility model relates to the field of detection devices, and discloses a pulse detection device of an ultrasonic gas meter, which comprises a detection machine, a bell jar gas meter is fixedly connected to the bottom of the inner wall of the front side of the detection machine, a supporting plate is fixedly connected to the inner wall of the front side of the detection machine, and a gas inlet pipe is fixedly connected to the top of the bell jar gas meter. A positioning assembly is arranged on the supporting plate, a sealing assembly is arranged on the air inlet pipe, the positioning assembly comprises a trapezoidal block, dovetail blocks are fixedly connected to the left side and the right side of the trapezoidal block, movable blocks are slidably connected to the outer walls of the dovetail blocks, and connecting columns are fixedly connected to the back faces of the movable blocks. And the top of the connecting column is fixedly connected with a clamping plate. According to the gas meter detection device, the positioning assembly is arranged, the back face of the gas meter to be detected makes contact with the front face of the baffle, the cylindrical rod is pulled outwards to drive the two sets of clamping plates to clamp and position the gas meter to be detected, and therefore the working efficiency of the detection device is improved.

Description

Technical Field

[0001] The utility model relates to the field of detection devices, in particular to a pulsation detection device for an ultrasonic gas meter. Background Art

[0002] Ultrasonic gas meter is a device used to measure gas flow. It uses ultrasonic technology to achieve non-contact flow measurement. Ultrasonic gas meter is widely welcomed due to its high precision, non-invasiveness and long-term stability, and has become one of the important tools for modern gas flow measurement.

[0003] After searching, Chinese patent announcement number: CN218955879U discloses a pulsation detection device for an ultrasonic gas meter. By setting up a placement rack, a pole, a pressing rack and a sealing interface, it avoids tedious disassembly and assembly steps and reduces the workload of the staff, thereby improving the detection efficiency of the pulsation detection device for the ultrasonic gas meter.

[0004] However, considering that when the above-mentioned device is used, the gas meter to be tested needs to be placed on a placement rack and a sealed interface is used for connection detection, it is difficult for the staff to accurately place the air inlet and air outlet of the gas meter to be tested directly below the sealing interface when placing it. Therefore, the staff needs to adjust the position of the gas meter to be tested on the placement rack multiple times, which leads to a decrease in the working efficiency of the detection device. For this reason, an ultrasonic gas meter pulsation detection device is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the present invention provides a pulsation detection device for an ultrasonic gas meter, aiming to improve the problem in the prior art that workers are required to adjust the position of the gas meter to be detected on the placement rack multiple times, thereby reducing the working efficiency of the detection device.

[0006] In order to achieve the above-mentioned object, the utility model adopts the following technical solution: a pulsation detection device for an ultrasonic gas meter, comprising a detection machine, a bell-shaped gas meter is fixedly connected to the bottom of the front inner wall of the detection machine, a support plate is fixedly connected to the front inner wall of the detection machine, an air intake pipe is fixedly connected to the top of the bell-shaped gas meter, a positioning assembly is provided on the support plate, and a sealing assembly is provided on the air intake pipe;

[0007] The positioning assembly includes a trapezoidal block, the left and right sides of the trapezoidal block are fixedly connected to dovetail blocks, the outer wall of the dovetail block is slidably connected to a movable block, the back of the movable block is fixedly connected to a connecting column, the top of the connecting column is fixedly connected to a clamping plate, a sliding groove is provided on the top of the support plate, the top rear end of the support plate is fixedly connected to a baffle, and the front of the trapezoidal block is fixedly connected to a cylindrical rod.

[0008] As a further description of the above technical solution:

[0009] The sealing component includes a round cover, a sealing gasket is fixedly connected to the inner wall of the round cover, a wedge block is elastically connected to the left inner wall of the air inlet pipe through a limiting spring, and a round hole is formed in the outer wall of the round cover.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the trapezoidal block is slidably connected to the inner wall of the support plate, the connecting column is slidably connected to the inner wall of the chute, and the outer circumference of the cylindrical rod penetrates and is slidably connected to the front inner wall of the support plate.

[0012] As a further description of the above technical solution:

[0013] A fixing block is fixedly connected to the front of the support plate, a clamping block is elastically connected to the inner wall of the fixing block through a spring, a pull rod is fixedly connected to the right side of the clamping block, and a clamping groove is formed in the right side of the cylindrical rod.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the round cover is inserted into the outer wall of the air inlet pipe, one end of the limiting spring is fixedly connected to the left inner wall of the air inlet pipe, and the other end of the limiting spring is fixedly connected to the outer wall of the wedge block.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the wedge block is slidably connected to the left inner wall of the air inlet pipe, and the outer wall of the wedge block is clamped with the inner wall of the round hole.

[0018] As a further description of the above technical solution:

[0019] The front inner wall of the fixing block penetrates and is slidably connected to the outer circumference of the cylindrical rod, one end of the spring is fixedly connected to the inner wall of the fixing block, and the other end of the spring is fixedly connected to the outer wall of the clamping block.

[0020] As a further description of the above technical solution:

[0021] The outer circumference of the pull rod penetrates and is slidably connected to the right inner wall of the fixing block, the outer wall of the clamping block is slidably connected to the inner wall of the fixing block, and the outer wall of the clamping block is clamped with the inner wall of the clamping groove.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present utility model, by providing a positioning component, the back of the gas meter to be detected is brought into contact with the front of the baffle. The cylindrical rod is pulled outwards, causing the trapezoidal block to drive the dovetail block to move, and at the same time driving two movable blocks to move, so that two connecting columns drive two clamping plates to clamp and position the gas meter to be detected, thereby improving the working efficiency of the detection device.

[0024] 2. In the present utility model, by providing a sealing component, through the insertion effect of the round cover and the intake pipe, the sealing gasket is squeezed, causing the sealing gasket to expand and deform, achieving a sealing effect on the gap between the round cover and the intake pipe, preventing dust from entering the inside of the bell gas meter through the intake pipe when the bell gas meter is not in use, affecting the service life of the bell gas meter, and thus improving the service life and use effect of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the pulsation detection device for an ultrasonic gas meter proposed by the present utility model;

[0026] Figure 2 is the pulsation detection device for an ultrasonic gas meter proposed by the present utility model Figure 1 partial enlarged structural schematic diagram of part A;

[0027] Figure 3 is the sectional structural schematic diagram of the support plate of the pulsation detection device for an ultrasonic gas meter proposed by the present utility model;

[0028] Figure 4 is the split structural schematic diagram of the trapezoidal block and the movable block of the pulsation detection device for an ultrasonic gas meter proposed by the present utility model;

[0029] Figure 5 is the split structural schematic diagram of the sealing component of the pulsation detection device for an ultrasonic gas meter proposed by the present utility model;

[0030] Figure 6 is the sectional structural schematic diagram of the fixing block of the pulsation detection device for an ultrasonic gas meter proposed by the present utility model.

[0031] LEGEND DESCRIPTION:

[0032] 1. Detection machine; 2. Bell gas meter; 3. Support plate; 4. Intake pipe; 5. Positioning component; 51. Trapezoidal block; 52. Movable block; 53. Connecting column; 54. Clamping plate; 55. Baffle; 56. Dovetail block; 57. Cylindrical rod; 58. Fixing block; 59. Spring; 510. Block; 511. Pull rod; 6. Sealing component; 61. Round cover; 62. Sealing gasket; 63. Limiting spring; 64. Wedge block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1 - Figure 2 The utility model provides an embodiment: an ultrasonic gas meter pulsation detection device, including a detection machine 1, which is provided with two sets of sealing joints. By connecting the air inlet and the air outlet of the gas meter to be detected to the two sets of sealing joints respectively, the gas meter to be detected can be detected. A bell-shaped gas meter 2 is fixedly connected to the bottom of the front inner wall of the detection machine 1. The outlet pipe of the bell-shaped gas meter 2 is connected to the air inlet of the gas meter to be detected through a set of sealing joints. By comparing the pulsation of the bell-shaped gas meter 2 with the pulsation of the gas meter to be detected, the detection result is obtained. The detection machine 1 is fixedly connected to a support plate 3 on the front inner wall, which supports the gas meter to be tested. An air inlet pipe 4 is fixedly connected to the top of the bell-shaped gas meter 2. Air is sucked in by opening the air inlet pipe 4 to achieve the detection effect. A positioning component 5 is provided on the support plate 3. The positioning component 5 can be used to position the gas meter to be tested, avoiding manual adjustment by the staff, thereby improving the working efficiency of the detection device. A sealing component 6 is provided on the air inlet pipe 4. The sealing component 6 can seal and close the air inlet pipe 4 to avoid dust affecting the service life of the bell-shaped gas meter 2.

[0035] Reference Figure 3 and Figure 4 The positioning assembly 5 includes a trapezoidal block 51, and both sides of the trapezoidal block 51 are inclined surfaces. The left and right sides of the trapezoidal block 51 are fixedly connected with dovetail blocks 56. The dovetail blocks 56 are symmetrically distributed in two groups, and the size of the dovetail blocks 56 away from the end of the trapezoidal block 51 is larger than the size of the end close to the trapezoidal block 51. The outer wall of the dovetail block 56 is slidably connected with a movable block 52. The movable blocks 52 are symmetrically distributed in two groups. Through the sliding effect of the movable block 52, the connecting column 53 is driven to slide along the inner wall of the slide groove. The back of the movable block 52 is fixedly connected with the connecting column 53, and the connecting column 53 is symmetrically distributed. There are two groups, and the top of the connecting column 53 is fixedly connected with a clamping plate 54, and the clamping plates 54 are symmetrically distributed in two groups. Through the movement effect of the two groups of clamping plates 54, the gas meter to be tested can be clamped and positioned or the clamping effect can be released. A slide groove is provided on the top of the support plate 3, and the slide groove is symmetrically distributed in two groups. The top rear end of the support plate 3 is fixedly connected with a baffle 55, and the baffle 55 plays a role in limiting and positioning the longitudinal position of the gas meter to be tested. The front of the trapezoidal block 51 is fixedly connected with a cylindrical rod 57, and the cylindrical rod 57 makes it convenient for staff to move the trapezoidal block 51.

[0036] Referring to Figure 2 and Figure 5 ,the sealing assembly 6 includes a round cover 61. By installing the round cover 61 on the intake pipe 4, the intake pipe 4 is closed. A sealing washer 62 is fixedly connected to the inner wall of the round cover 61. Through the extrusion of the round cover 61 and the intake pipe 4 on the sealing washer 62, the sealing washer 62 expands and deforms, achieving a sealing effect on the gap between the intake pipe 4 and the round cover 61. A wedge block 64 is elastically connected to the left inner wall of the intake pipe 4 through a limiting spring 63. Under the elastic force of the limiting spring 63, the wedge block 64 always maintains a clamping effect with the round hole without external force, thereby limiting the round cover 61. A round hole is provided on the outer wall of the round cover 61.

[0037] Referring to Figure 3 and Figure 4 ,the outer wall of the trapezoidal block 51 is slidably connected to the inner wall of the support plate 3. Through the sliding effect of the trapezoidal block 51, two sets of dovetail blocks 56 are driven to slide along the inner walls of the two sets of movable blocks 52, thereby driving the two sets of movable blocks 52 to move horizontally. The connecting column 53 is slidably connected to the inner wall of the chute. Through the sliding effect of the connecting column 53, the clamping plate 54 is driven to move. The outer circumference of the cylindrical rod 57 penetrates and is slidably connected to the front inner wall of the support plate 3. Through the sliding effect of the cylindrical rod 57, the trapezoidal block 51 is driven to slide.

[0038] Referring to Figure 3 and Figure 6 ,a fixed block 58 is fixedly connected to the front of the support plate 3. A clamping block 510 is elastically connected to the inner wall of the fixed block 58 through a spring 59. Under the elastic force of the spring 59, the clamping block 510 always maintains a clamping effect with the card slot without external force, limiting the cylindrical rod 57 and keeping the two sets of clamping plates 54 fixed. A pull rod 511 is fixedly connected to the right side of the clamping block 510. Two card slots are provided on the right side of the cylindrical rod 57. Through the clamping effects of the two card slots and the clamping block 510 at different positions, different position limiting effects are achieved on the cylindrical rod 57.

[0039] Referring to Figure 5 ,the inner wall of the round cover 61 is inserted into the outer wall of the intake pipe 4. One end of the limiting spring 63 is fixedly connected to the left inner wall of the intake pipe 4, and the other end of the limiting spring 63 is fixedly connected to the outer wall of the wedge block 64. Through the fixing effect of the limiting spring 63, the wedge block 64 is kept fixed to prevent the wedge block 64 from falling off. The outer wall of the wedge block 64 is slidably connected to the left inner wall of the intake pipe 4. Through the sliding effect of the wedge block 64, the wedge block 64 is clamped or unclamped with the round hole, and the outer wall of the wedge block 64 is clamped with the inner wall of the round hole.

[0040] Referring to Figure 1and Figure 6 The front inner wall of the fixed block 58 penetrates and is slidably connected to the outer periphery of the cylindrical rod 57. One end of the spring 59 is fixedly connected to the inner wall of the fixed block 58, and the other end of the spring 59 is fixedly connected to the outer wall of the clamping block 510. Through the fixing effect of the spring 59, the clamping block 510 is kept fixed to prevent the clamping block 510 from falling off. The outer periphery of the pull rod 511 penetrates and is slidably connected to the right inner wall of the fixed block 58. Through the sliding effect of the pull rod 511, the clamping block 510 is driven to slide. The outer wall of the clamping block 510 is slidably connected to the inner wall of the fixed block 58. Through the sliding effect of the clamping block 510, the clamping block 510 is engaged or disengaged with the card slot, and the outer wall of the clamping block 510 is engaged with the inner wall of the card slot.

[0041] Working principle: When the staff needs to perform pulsation detection on the ultrasonic gas meter, the gas meter to be detected is placed on the support plate 3 by the staff, so that the back of the gas meter to be detected contacts the front of the baffle 55 and is simultaneously between the two clamping plates 54. Subsequently, the staff pulls the pull rod 511 outwards, driving the clamping block 510 to disengage from the card slot, and at the same time releasing the limiting effect on the cylindrical rod 57. The cylindrical rod 57 is pulled outwards, driving the trapezoidal block 51 to slide towards the front of the support plate 3, and at the same time driving the two dovetail blocks 56 to slide along the inner walls of the two movable blocks 52 respectively, so that the two movable blocks 52 approach each other, driving the two connecting columns 53 to approach each other, so that the two clamping plates 54 approach each other to clamp and position the gas meter to be detected. Subsequently, the pull rod 511 is released, so that the clamping block 510 is engaged with the card slot under the elastic force of the spring 59, limiting the cylindrical rod 57, so that the two clamping plates 54 maintain a fixed clamping state.

[0042] The staff connects the inlet and outlet of the gas meter to be detected to the detector 1. Subsequently, the wedge block 64 is pressed to disengage from the round hole and at the same time release the limiting effect on the round cover 61. The round cover 61 is removed, so that the inlet pipe 4 on the bell gas meter 2 is opened. The detector 1 is started, and the detector 1 inhales through the inlet pipe 4 for detection. When the detection is completed, the staff releases the limiting effect on the cylindrical rod 57 and pushes the cylindrical rod 57 towards the back of the support plate 3, so that the two clamping plates 54 move away from each other, releasing the clamping effect on the detected gas meter, which is convenient for the staff to remove the detected gas meter.

[0043] When the detector 1 is not in use, the staff inserts the round cover 61 into the inlet pipe 4, so that the sealing gasket 62 provided in the round cover 61 expands and deforms, sealing the gap between the round cover 61 and the inlet pipe 4. At the same time, the wedge block 64 is engaged with the round hole under the elastic force of the limiting spring 63 to limit the round cover 61, so that the inlet pipe 4 remains in a fixed closed state.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. The pulsation detection device of an ultrasonic gas meter, comprising a detector (1), characterized in that: A bell-shaped gas meter (2) is fixedly connected to the bottom of the front inner wall of the detector (1), a support plate (3) is fixedly connected to the front inner wall of the detector (1), an air intake pipe (4) is fixedly connected to the top of the bell-shaped gas meter (2), a positioning assembly (5) is provided on the support plate (3), and a sealing assembly (6) is provided on the air intake pipe (4); The positioning assembly (5) comprises a trapezoidal block (51), the left and right sides of the trapezoidal block (51) are fixedly connected with dovetail blocks (56), the outer wall of the dovetail block (56) is slidably connected with a movable block (52), the back of the movable block (52) is fixedly connected with a connecting column (53), the top of the connecting column (53) is fixedly connected with a clamping plate (54), a sliding groove is provided on the top of the support plate (3), the rear end of the top of the support plate (3) is fixedly connected with a baffle (55), and the front of the trapezoidal block (51) is fixedly connected with a cylindrical rod (57).

2. The pulsation detection device of the ultrasonic gas meter according to claim 1, characterized in that: The sealing assembly (6) includes a circular cover (61), the inner wall of the circular cover (61) is fixedly connected to a sealing gasket (62), the left inner wall of the intake pipe (4) is elastically connected to a wedge block (64) via a limit spring (63), and the outer wall of the circular cover (61) is provided with a circular hole.

3. The pulsation detection device of the ultrasonic gas meter according to claim 1, characterized in that: The outer wall of the trapezoidal block (51) is slidably connected to the inner wall of the support plate (3), the connecting column (53) is slidably connected to the inner wall of the slide groove, and the outer periphery of the cylindrical rod (57) penetrates and slidably connects to the front inner wall of the support plate (3).

4. The pulsation detection device of the ultrasonic gas meter according to claim 1, characterized in that: The front of the support plate (3) is fixedly connected to a fixed block (58), the inner wall of the fixed block (58) is elastically connected to a clamping block (510) via a spring (59), the right side of the clamping block (510) is fixedly connected to a pull rod (511), and a clamping slot is provided on the right side of the cylindrical rod (57).

5. The pulsation detection device of the ultrasonic gas meter according to claim 2, characterized in that: The inner wall of the circular cover (61) is plugged into the outer wall of the air intake pipe (4), one end of the limit spring (63) is fixedly connected to the left inner wall of the air intake pipe (4), and the other end of the limit spring (63) is fixedly connected to the outer wall of the wedge block (64).

6. The pulsation detection device of the ultrasonic gas meter according to claim 2, characterized in that: The outer wall of the wedge block (64) is slidably connected to the left inner wall of the air intake pipe (4), and the outer wall of the wedge block (64) is clamped to the inner wall of the circular hole.

7. The pulsation detection device of the ultrasonic gas meter according to claim 4, characterized in that: The front inner wall of the fixed block (58) penetrates and is slidably connected to the outer periphery of the cylindrical rod (57), one end of the spring (59) is fixedly connected to the inner wall of the fixed block (58), and the other end of the spring (59) is fixedly connected to the outer wall of the clamping block (510).

8. The pulsation detection device of the ultrasonic gas meter according to claim 4, characterized in that: The outer periphery of the pull rod (511) penetrates and is slidably connected to the right inner wall of the fixed block (58), the outer wall of the clamping block (510) is slidably connected to the inner wall of the fixed block (58), and the outer wall of the clamping block (510) is clamped to the inner wall of the clamping slot.

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