Sealing performance detection device for integrated large-aperture volume correction instrument

Abstract

The utility model discloses a sealing performance detection device for an integrated large-aperture volume correction instrument, which relates to the technical field of detection and calibration of volume correction instruments and comprises a detection assembly which comprises a test tube and flange end covers arranged at two ends of the test tube; a rubber pad is adhered to one side, adjacent to the test tube, of the flange end cover, an air inlet pressure guide opening is formed in the flange end cover, an air outlet pressure guide opening is formed in the middle of one side, adjacent to the test tube, of the flange end cover, and a pressure guide channel communicated with the air inlet pressure guide opening and the air outlet pressure guide opening is formed in the flange end cover. The installation assembly and the adjusting assembly are arranged to assist the installation of the detection assembly, that is, the test pipe is in sealed connection with the flange end cover, so that the problems that the flange end cover and the port of the test pipe are difficult to connect, the sealing performance is poor after connection, and the sealing performance is poor in the sealing performance testing process of the integrated volume correction instrument with the base meter flowmeter pipeline caliber larger than 150 mm are solved. And therefore, the problem that the calibration operation of the volume correction instrument cannot be smoothly carried out can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of volume corrector detection and calibration, in particular to a sealing detection device for an integrated large-caliber volume corrector. Background Art

[0002] The gas flow meter volume corrector consists of a temperature sensor, a pressure sensor, a calculation unit, a storage unit, a display and output unit, etc. It can calculate the input flow signal according to the measured gas temperature and pressure parameters, convert the volume under natural gas working conditions (hereinafter referred to as "working conditions") into the volume under standard reference conditions (hereinafter referred to as "standard conditions"), and store and display it. Hereinafter referred to as the "corrector".

[0003] It is mainly divided into integrated and split volume correctors. When calibrating an integrated volume corrector, the corrector and the base flow meter need to be placed as a whole in a high and low temperature constant test chamber, and flange covers are plugged at both ends of the flow meter. The pressure pipe is connected to the digital pressure controller from the pressure guide hole of the flange cover. The digital pressure controller is connected to the nitrogen bottle, and the standard platinum resistance thermometer is inserted through the flange cover hole. However, when the base flow meter has a large diameter (such as DN150 or DN200), due to its large size and heavy weight, it is difficult to install the flange covers at both ends before the test, and the sealing after installation cannot be guaranteed, resulting in inaccurate sealing test results and inability to perform subsequent calibration work. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned problems existing in the existing sealing detection device for an integrated large-caliber volume corrector, the present utility model is proposed.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a sealing detection device for an integrated large-diameter volume corrector, comprising a detection component, which includes a test tube and flange end covers arranged at both ends of the test tube; a rubber pad is bonded to the side of the flange end cover adjacent to the test tube, an air inlet pressure conducting port is arranged on the flange end cover, an air outlet pressure conducting port is arranged in the middle of the side of the flange end cover adjacent to the test tube, and a pressure conducting channel connecting the air inlet pressure conducting port and the air outlet pressure conducting port is arranged inside the flange end cover.

[0007] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, the sealing detection device further comprises: an installation assembly, which comprises a workbench, a support seat arranged on the top of the workbench for supporting the test tube; and an adjustment assembly, which comprises a first guide rail arranged on the top of the workbench and along the center line of the workbench, and a first slider arranged on the first guide rail; the first slider is connected to the support seat by bolts, and a centering groove for positioning the test tube is arranged on the top of the support seat.

[0008] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, two second guide rails with symmetrical structures and arranged perpendicular to the first guide rail are arranged on both sides of the first guide rail, a second slider is arranged on the first guide rail, and a mounting frame connected to the flange end cover is arranged on the second slider.

[0009] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, the centering groove is a straight groove and has a V-shaped longitudinal section, and the centering groove is arranged parallel to the second guide rail.

[0010] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, wherein: the mounting frame includes an L-shaped frame body, the L-shaped frame body is provided with a sliding groove of a vertical workbench, and a third slider is movably arranged in the sliding groove, an end cover fixing plate is arranged between the third slider and the flange end cover, and the third slider, end cover fixing plate, and flange end cover on the same side are sequentially connected by bolts.

[0011] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, wherein: the L-shaped frame is movably connected with an adjusting screw arranged perpendicularly to the workbench, a rotating handle is provided at the end of the adjusting screw away from the workbench, and the third slider is provided with a threaded through hole adapted to the adjusting screw.

[0012] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, two groups of symmetrically arranged protective rods are provided on both sides of the test tube, and a U-shaped groove that matches the clearance of the protective rod is provided on the side wall of the end cover fixing plate.

[0013] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, wherein: both ends of the protective rod are provided with continuous external thread grooves and are threadedly connected with fastening nuts.

[0014] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, a reinforcing plate is arranged on the L-shaped frame, the longitudinal section of the reinforcing plate is a right-angled triangle, and the side walls of the reinforcing plate corresponding to the two right-angled sides are respectively connected to the vertical section and the horizontal section of the L-shaped frame.

[0015] As a preferred solution of the sealing detection device for the integrated large-caliber volume corrector described in the utility model, a support member for supporting the flange end cover is provided at the bottom of the end cover fixing plate.

[0016] The beneficial effects of the utility model are as follows: the utility model provides an installation component and an adjustment component to assist in the installation of the detection component, that is, the test tube is sealed and connected with the flange end cover, thereby solving the problem that during the sealing test of the integrated volume corrector for the base meter flow meter with a pipeline diameter greater than 150mm, the flange end cover is difficult to connect with the test tube port, and the sealing is poor after the connection, resulting in inaccurate sealing test results and the inability to smoothly perform the volume corrector calibration operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the state structure when the test tube is connected to the flange end cover in the utility model.

[0020] Figure 3 It is a front view structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] At present, when calibrating an integrated volume corrector, the corrector and the base flow meter need to be placed as a whole in a high and low temperature constant test chamber, flange covers are plugged at both ends of the base flow meter, and pressure pipes are connected from the pressure guide holes of the flange covers to the digital pressure controller, and the digital pressure controller is connected to the nitrogen cylinder.

[0026] Example 1

[0027] Reference Figure 1 to Figure 3 , which is the first embodiment of the utility model, provides a sealing detection device for an integrated large-caliber volume corrector, including a detection component 100, which is used to detect the sealing of the integrated volume corrector and calibrate the temperature sensor and pressure sensor inside the instrument.

[0028] Specifically, the detection component 100 includes a test tube 101 (referring to the base flow meter pipeline), and flange end covers 102 arranged at both ends of the test tube 101. During testing, the flange end covers 102 are connected to the ports of the test tube 101 by bolts; a rubber pad 103 is bonded to one side of the flange end cover 102 adjacent to the test tube 101 to ensure the sealing of the port of the test tube 101.

[0029] Furthermore, an air inlet pressure conducting port 102a is provided on the flange end cover 102, and the air inlet pressure conducting port 102a is connected to the air outlet end of the nitrogen bottle through an air supply pipe. The air inlet pressure conducting port 102a is provided on the side of the flange end cover 102 that does not contact the test tube 101. In the present embodiment, the air inlet pressure conducting port 102a is provided on the outer circumferential surface of the flange end cover 102.

[0030] Furthermore, a gas outlet pressure conducting port is provided in the middle of one side of the flange end cover 102 adjacent to the test tube 101 , and a pressure conducting channel connecting the gas inlet pressure conducting port 102a and the gas outlet pressure conducting port is provided inside the flange end cover 102 .

[0031] In summary, before testing the tightness of the integrated volume corrector, the flange end cover 102 needs to be connected to the test tube 101 (referring to the base flow meter pipeline), and the rubber pad 103 ensures the tightness after the connection. After installation, select the flange end cover 102 on one side, connect its air inlet pressure port 102a to the air outlet of the gas pipeline, connect the other end of the gas pipeline to the nitrogen bottle, and seal the air inlet pressure port 102a on the flange end cover 102 on the other side with a plug. Finally, perform a pressure test to determine whether there is a leak. If the leak test is passed, the volume corrector can be calibrated.

[0032] Example 2

[0033] Reference Figure 1 to Figure 3 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the sealing detection device also includes a mounting assembly 200 and an adjustment assembly 300; wherein, the mounting assembly 200 is used to support the large-caliber volume corrector, the adjustment assembly 300 cooperates with the mounting assembly 200, and the auxiliary flange end cover 102 is connected to the port of the test tube 101.

[0034] Specifically, the installation assembly 200 includes a workbench 201, and a support base 202 arranged on the top of the workbench 201 for supporting the test tube 101, and a centering groove 202a for positioning the test tube 101 is arranged on the top of the support base 202; for the sealing test of the large-diameter volume corrector, before the test, the large-diameter volume corrector is lifted by a lifting device and placed on the support base 202, and the test tube 101 (base meter flow meter pipeline) is affected by the centering groove 202a and can be automatically centered in the middle of the top end of the support base 202. At this time, the test tube 101 is lifted by the support base 202, and its two ends are suspended in the air. The centering groove 202a can also ensure the stability of the test tube 101 after it is placed, so that the experimenter can install the flange end cover 102 conveniently.

[0035] Furthermore, the adjustment assembly 300 includes a first guide rail 301 disposed on the top of the workbench 201 and arranged along the center line of the workbench 201, and a first slider 302 disposed on the first guide rail 301; wherein the first slider 302 is connected to the support seat 202 by bolts, and two second guide rails 303 with symmetrical structures and arranged perpendicular to the first guide rail 301 are disposed on both sides of the first guide rail 301, a second slider 304 is disposed on the first guide rail 301, and a mounting frame 305 connected to the flange end cover 102 is disposed on the second slider 304.

[0036] Furthermore, the centering groove 202 a is a straight groove and has a V-shaped longitudinal section, and the centering groove 202 a is arranged parallel to the second guide rail 303 .

[0037] In summary, since the large-diameter volume corrector (usually refers to the base flow meter pipeline with a diameter greater than 150mm) is large in size and heavy in weight, when performing a sealing test, the configured flange end cover 102 is also large and heavy. During the assembly before the test, if auxiliary equipment is not used, it is difficult to connect the flange end cover 102 to the test tube 101, and the sealing requirements after the connection cannot be guaranteed.

[0038] In this embodiment, the test tube 101 is hoisted to the top of the support seat 202 by using the installation assembly 200, and the two ends of the test tube 101 are suspended in the air. The centering groove 202a automatically centers the test tube 101 and keeps it stable after being placed; and then the adjustment assembly 300 is set, and the test tube 101 is adjusted to align with the flange end cover 102 by sliding the first slider 302, and the flange end cover 102 is adjusted to fit the end of the test tube 101 by sliding the second slider 304. In this embodiment, the test tube 101 and the flange end cover 102 do not need to use bolts, which optimizes the assembly work before the test and reduces the labor intensity of the experimenter.

[0039] The remaining structures are the same as those of Example 1.

[0040] Example 3

[0041] Reference Figure 1 to Figure 3 , which is the third embodiment of the utility model. This embodiment is different from the second embodiment in that: the mounting frame 305 includes an L-shaped frame body 305a, the L-shaped frame body 305a is provided with a sliding groove of the vertical workbench 201, a third slider 305b is provided in the sliding groove, an end cover fixing plate 305c is provided between the third slider 305b and the flange end cover 102, and the third slider 305b, the end cover fixing plate 305c, and the flange end cover 102 on the same side are sequentially connected by bolts.

[0042] Furthermore, the L-shaped frame 305a is movably connected with an adjusting screw 305d arranged vertically to the workbench 201, a rotating handle 305e is provided at one end of the adjusting screw 305d away from the workbench 201, and the third slider 305b is provided with a threaded through hole matched with the adjusting screw 305d.

[0043] Specifically, by rotating the rotating handle 305e, the adjusting screw 305d is driven to rotate, and the adjusting screw 305d is threadedly matched with the third slider 305b to drive the third slider 305b to rise and fall, and the side wall of the sliding groove plays a circumferential limit role on the third slider 305b, so as to keep the third slider 305b rising and falling smoothly. That is, by rotating the rotating handle 305e, the flange end cover 102 is controlled to rise and fall, ensuring that the rubber pad 103 is fully fitted with the port of the test tube 101.

[0044] Furthermore, two groups of symmetrically arranged protection rods 306 are provided on both sides of the test tube 101 , and a U-shaped groove 305 c - 1 that is gap-matched with the protection rods 306 is provided on the side wall of the end cover fixing plate 305 c .

[0045] Specifically, both ends of the protection rod 306 are provided with continuous external thread grooves and are threadedly connected with fastening nuts 307 .

[0046] In summary, in combination with Example 2 and Example 3, for the sealing test experiment of the integrated large-caliber volume corrector, the device, through the cooperation of the installation component 200 and the adjustment component 300, the test tube 101 and the flange end cover 102 do not need to use bolts, which optimizes the assembly work before the test. In Example 3, by adding a protective rod 306, both sides of the test tube 101 are protected. At the same time, when in use, further tightening the fastening nut 307 can drive the end cover fixing plate 305c to move further toward the test tube 101, thereby enhancing the tightness of the fitting connection between the rubber pad 103 and the port of the test tube 101. At the same time, the problem of gas vibration caused by ventilation (nitrogen) during the test process, resulting in a small displacement and separation of the test tube 101 and the flange end cover 102, is solved. For the sealing test, the requirements of pressure maintenance and sealing are provided.

[0047] The remaining structure is the same as that of Example 2.

[0048] Example 4

[0049] Reference Figure 1 to Figure 3 , which is the fourth embodiment of the utility model. This embodiment is different from the third embodiment in that: a reinforcing plate 305h is provided on the L-shaped frame 305a, and the longitudinal section of the reinforcing plate 305h is a right-angled triangle, and the side walls of the reinforcing plate 305h corresponding to the two right-angled sides are respectively connected to the vertical section and the horizontal section of the L-shaped frame 305a; the L-shaped frame 305a is used to support the third slider 305b, the end cover fixing plate 305c, and the flange end cover 102. By providing the reinforcing plate 305h, the strength of the L-shaped frame 305a can be effectively increased.

[0050] Furthermore, a support member 305i for supporting the flange end cover 102 is provided at the bottom of the end cover fixing plate 305c. The support member 305i supports the flange end cover 102, and the protruding portion can also support and protect the test tube 101.

[0051] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A sealing detection device for an integrated large-caliber volume corrector, characterized in that: include, A detection assembly (100) comprising a test tube (101) and flange end covers (102) arranged at both ends of the test tube (101); A rubber pad (103) is bonded to one side of the flange end cover (102) adjacent to the test tube (101); an air inlet pressure conducting port (102a) is provided on the flange end cover (102); an air outlet pressure conducting port is provided in the middle of one side of the flange end cover (102) adjacent to the test tube (101); and a pressure conducting channel communicating with the air inlet pressure conducting port (102a) and the air outlet pressure conducting port is provided inside the flange end cover (102).

2. The sealing detection device for an integrated large-caliber volume corrector according to claim 1, characterized in that: The sealing detection device also includes: A mounting assembly (200) comprising a workbench (201), a support base (202) disposed on the top of the workbench (201) and used to support the test tube (101); and An adjustment component (300), comprising a first guide rail (301) disposed on the top of the workbench (201) and arranged along the center line of the workbench (201), and a first slider (302) disposed on the first guide rail (301); The first sliding block (302) is connected to the support seat (202) via bolts, and a centering groove (202a) for positioning the test tube (101) is provided on the top of the support seat (202).

3. The sealing detection device for an integrated large-caliber volume corrector according to claim 2, characterized in that: Two second guide rails (303) with symmetrical structures and arranged perpendicular to the first guide rail (301) are arranged on both sides of the first guide rail (301); a second slider (304) is arranged on the first guide rail (301); and a mounting frame (305) connected to the flange end cover (102) is arranged on the second slider (304).

4. The sealing detection device for an integrated large-caliber volume corrector according to claim 3, characterized in that: The centering groove (202a) is a straight groove and has a V-shaped longitudinal section. The centering groove (202a) is arranged in parallel with the second guide rail (303).

5. The sealing detection device for an integrated large-caliber volume corrector according to claim 3 or 4, characterized in that: The mounting frame (305) comprises an L-shaped frame body (305a), the L-shaped frame body (305a) is provided with a sliding groove of a vertical workbench (201), and a third slider (305b) is movably provided in the sliding groove, an end cover fixing plate (305c) is provided between the third slider (305b) and the flange end cover (102), and the third slider (305b), the end cover fixing plate (305c), and the flange end cover (102) on the same side are sequentially connected by bolts.

6. The sealing detection device for an integrated large-caliber volume corrector according to claim 5, characterized in that: The L-shaped frame (305a) is movably connected with an adjusting screw (305d) arranged vertically to the workbench (201); a rotating handle (305e) is provided at one end of the adjusting screw (305d) away from the workbench (201); and the third sliding block (305b) is provided with a threaded through hole matched with the adjusting screw (305d).

7. The sealing detection device for an integrated large-caliber volume corrector according to claim 6, characterized in that: Two groups of symmetrically arranged protection rods (306) are provided on both sides of the test tube (101), and a U-shaped groove (305c-1) that is clearance-matched with the protection rods (306) is provided on the side wall of the end cover fixing plate (305c).

8. The sealing detection device for an integrated large-caliber volume corrector according to claim 7, characterized in that: Both ends of the protection rod (306) are provided with continuous external thread grooves and are threadedly connected with fastening nuts (307).

9. The sealing detection device for an integrated large-caliber volume corrector according to any one of claims 6 to 8, characterized in that: The L-shaped frame (305a) is provided with a reinforcing plate (305h), the longitudinal section of the reinforcing plate (305h) is a right-angled triangle, and the side walls of the reinforcing plate (305h) corresponding to the two right-angled sides are respectively connected to the vertical section and the horizontal section of the L-shaped frame (305a).

10. The sealing detection device for an integrated large-caliber volume corrector according to claim 9, characterized in that: A support member (305i) for supporting the flange end cover (102) is provided at the bottom of the end cover fixing plate (305c).

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