Flange type pressure type instrument pressure test clamp

Abstract

The utility model relates to a flange type pressure type instrument pressure test clamp which comprises a platen, the platen is in a flat plate shape, supporting legs connected with the platen are arranged below the platen, and a through-hole-shaped first installation hole is formed in the platen; the platen is provided with a pressure-bearing disc which is movably arranged; a second mounting hole is formed in the center of the pressure-bearing disc, and a connector in butt joint with the second mounting hole is arranged on the bottom surface of the pressure-bearing disc; the size and the depth of the connector are matched with those of the first mounting hole, so that the connector can penetrate through the first mounting hole and is connected with a pressure test air pipe when the pressure bearing disc is placed on the bedplate; the device further comprises a plurality of rotating cylinders which are uniformly arranged on the platen around the pressure-bearing disc, and a flange type pressure instrument placed on the pressure-bearing disc can be tightly pressed on the pressure-bearing disc during testing. Therefore, the flange type pressure type instrument can be quickly pressed or released from being fixed, the traditional bolt fastening mode is replaced, and the operation efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tool, especially a clamp for instrument test, in particular to a flange pressure type instrument pressure test clamp. BACKGROUND

[0002] In the process of petrochemical project construction, before installing the flange pressure type instrument, it is often necessary to re-inspect the error, variation and accuracy of the measurement data of the flange pressure type instrument at the construction site. Due to the limitation of the construction site environment, at present, the instrument is mainly fixed on the flange by bolts for testing. This method needs two people to complete, which is time-consuming and laborious. Especially when there are more flange instruments in large construction projects, more manpower is needed. Moreover, if the pressure is uneven when the bolt is tightened, it will lead to pressure failure, which needs to be re-tightened, wasting a lot of time and labor. Even, the diaphragm box of the flange pressure type instrument may be damaged, leading to equipment damage and affecting the construction progress.

[0003] Therefore, it is urgent to design a tool that can quickly and conveniently clamp the flange pressure type instrument at the construction site, so as to better meet the construction needs. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at the problems encountered in the field test of the flange pressure type instrument, and provides a flange pressure type instrument pressure test clamp, which can conveniently clamp and disassemble the flange pressure type instrument, and can be operated by one person, greatly improving the efficiency and reducing the labor cost.

[0005] The technical scheme of the utility model is:

[0006] A flange pressure type instrument pressure test clamp, comprising a table plate, the table plate is flat, a support leg connected with the table plate is arranged below the table plate, and a first mounting hole in the shape of a through hole is arranged on the table plate; a pressure receiving disc movably placed on the table plate is arranged on the table plate; a second mounting hole is arranged at the center of the pressure receiving disc, and a connecting head opposite to the second mounting hole is arranged on the bottom surface of the pressure receiving disc; the size and depth of the connecting head are adapted to the first mounting hole, so that when the pressure receiving disc is placed on the table plate, the connecting head can pass through the first mounting hole and be connected with a pressure test gas pipe; a plurality of rotary air cylinders are uniformly arranged on the table plate around the pressure receiving disc, and the flange pressure type instrument placed on the pressure receiving disc can be pressed tightly on the pressure receiving disc during testing.

[0007] Further, the table plate is rectangular; the support leg is four, and is arranged at the four corners of the table plate respectively.

[0008] Further, the first mounting hole is located at the central position of the table plate.

[0009] Further, the pressure-bearing disc is disc-shaped, and a diameter of the pressure-bearing disc is greater than a diameter of a base of the flange pressure instrument.

[0010] Further, the pressure-bearing disc is disc-shaped, and a diameter of the pressure-bearing disc is greater than a diameter of a base of the flange pressure instrument.

[0011] Further, the pressure-bearing disc is disc-shaped, and a diameter of the pressure-bearing disc is greater than a diameter of a base of the flange pressure instrument.

[0012] Further, the pressure-bearing disc is disc-shaped, and a diameter of the pressure-bearing disc is greater than a diameter of a base of the flange pressure instrument.

[0013] Further, the pressure-bearing disc is disc-shaped, and a diameter of the pressure-bearing disc is greater than a diameter of a base of the flange pressure instrument.

[0014] The utility model discloses the beneficial effect:

[0015] The utility model discloses the beneficial effect: DRAWINGS

[0016] Fig. 1 It is the application schematic drawing of the utility model.

[0017] Fig. 2 It is the top view of the utility model.

[0018] Fig. 3 It is the structure schematic diagram of the utility model's table board.

[0019] Fig. 4 It is the structure schematic diagram of the utility model's pressure-bearing disc.

[0020] Among them, 1 - support leg, 2 - table board, 3 - flange pressure instrument, 4 - rotary air cylinder, 5 - pressure test air pipe, 6 - pressure-bearing disc, 7 - installation groove, 8 - first installation hole, 9 - second installation hole, 10 - connecting head. SPECIFIC EMBODIMENT

[0021] The utility model will be further explained in connection with the drawings and examples.

[0022] As shown in Figs. 1 to 4 .

[0023] The utility model discloses a flange pressure type instrument pressure test fixture, including platen 2, pressure -bearing disc 6 and rotary cylinder 4 etc.

[0024] The platen 2 is rectangular flat plate shape, can be made of stainless steel plate or carbon steel plate, and the four corners are respectively equipped with the supporting leg 1 connected with it, forms the table body shape structure, and the convenient placing and use are provided, preferably, the size of the supporting plate is 400mm * 400mm * 6mm.

[0025] The central position of the platen 2 is equipped with the first installation hole 8 of through -hole, and the aperture is about 30mm. Meanwhile, the platen 2 is equipped with the installation groove 7. The installation groove 7 is linear type through slot, and there are six, and two two constitute a group. Two installation grooves 7 in each group are parallel and interval arrangement, and the spacing is same with the installation spacing of rotary cylinder. Meanwhile, the installation groove 7 is evenly arranged along the circumference with the first installation hole 8 as the center, ensures that each installation groove is concentric and same radius, and makes the included angle between each installation groove in each group be 120 °. Meanwhile, the installation groove 7 is same direction with the radial direction with the first installation hole 8 as the center, satisfies the use demand. Preferably, the width of the installation groove 7 is about 6mm, and the length is about 75mm, and the inner end distance from the center of the first installation hole is about 24mm.

[0026] The pressure -bearing disc 6 is disc -shaped, and the diameter is slightly larger than the diameter of the base of flange pressure type instrument 3, so that the base of flange pressure type instrument 3 can be stably placed on the pressure -bearing disc 6. Meanwhile, the pressure -bearing disc 6 can be different in size, so as to adapt to the testing needs of flange pressure type instruments of different specifications. Preferably, the pressure -bearing disc can be made of 2-inch or 3-inch flange blind plate, to ensure the flatness of its surface and meet the installation requirements.

[0027] The center of the pressure -bearing disc 6 is provided with a second installation hole 9. The second installation hole 9 is a through hole, and the diameter is about 25mm, so as to meet the testing requirements. The bottom surface of the pressure -bearing disc 6 is provided with a connecting head 10 connected with the second installation hole 9. The connecting head 10 is a threaded joint, and the inner diameter is equivalent to the second installation hole 9, the outer diameter is adapted to the first installation hole 8, and the length is greater than the thickness of the platen 2, so that when the pressure -bearing disc 6 is placed on the platen 2, the connecting head 10 can pass through the first installation hole 8 and be connected with the pressure test gas pipe 5, so as to provide test pressure. Preferably, the connecting head can be selected as 1 / 2NPT-φ8mm terminal connector, which is welded on the second installation hole and is sealed.

[0028] The rotating air cylinder 4 is three, all are 90 degree rotating air cylinder, is fixed on three groups the mounting groove 7 through its self belonging bolt respectively, can make 90 degree rotation through its movable rod and press or loosen the base of flange pressure type instrument 3.And, when need to replace different size pressure disc, can along the mounting groove 7 with rotating air cylinder 4 moves, so as to adapt the demand of fastening.Preferably, the rotating air cylinder can select SRC series 40-09L product.

[0029] The working process of the utility model is:

[0030] Select the pressure disc that is suitable for the measured flange pressure type instrument, and place it on the table plate, so that the connector passes through the first mounting hole.Then, the flange pressure type instrument is placed on the pressure disc, and the rotating air cylinder is moved to abut against the outer edge of the pressure disc and fixed on the table plate, and the movable rod on the rotating air cylinder is driven to press on the base of the flange pressure type instrument.Finally, connect the hand pressure pump and the connector with the pressure test pipe, and start the hand pressure pump to test the flange pressure type instrument.Thus, by using the utility model, the flange pressure type instrument can be quickly pressed or released, replacing the previous bolt fastening method, greatly improving the operation efficiency, and avoiding damage to the instrument caused by uneven pressure.Furthermore, the utility model can be operated by one person, effectively reducing the labor cost and improving the economic benefit.

[0031] The parts not involved in the utility model are the same as or can be realized by using the prior art.

Claims

1. A flanged pressure type instrument pressure test fixture comprising a platen, characterized by, The base plate is flat, and a supporting leg is connected to the bottom of the base plate, and a first mounting hole in the shape of a through hole is arranged on the base plate; a pressure receiving disc is movably arranged on the base plate; a second mounting hole is arranged at the center of the pressure receiving disc, and a connecting head is arranged on the bottom surface of the pressure receiving disc and is opposite to the second mounting hole; the size and depth of the connecting head are adapted to the first mounting hole, so that when the pressure receiving disc is placed on the base plate, the connecting head can pass through the first mounting hole and be connected to a pressure testing pipe; a plurality of rotary air cylinders are uniformly arranged on the base plate around the pressure receiving disc, and can press a flange type pressure instrument placed on the pressure receiving disc on the pressure receiving disc during testing.

2. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The base plate is rectangular; the supporting leg is four, and is arranged at the four corners of the base plate.

3. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The first mounting hole is located at the center of the base plate.

4. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The pressure receiving disc is disc-shaped, and the diameter of the pressure receiving disc is greater than the diameter of the base of the flange type pressure instrument.

5. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The pressure receiving disc is multiple and different in size, so as to adapt to the testing requirements of flange type pressure instruments of different specifications.

6. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The rotary air cylinder is three, and is a 90° rotary air cylinder, and is uniformly arranged around the pressure receiving disc.

7. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The base plate is provided with a mounting groove; the mounting groove is a linear through groove, and there are six mounting grooves, and two mounting grooves form a group; the two mounting grooves in each group are parallel and spaced apart; the mounting groove is in the same direction as the radial direction with the first mounting hole as the center, and is uniformly arranged along the pressure receiving disc around the same center and the same radius; the rotary air cylinder is installed on the mounting groove and can move along the mounting groove.

8. The flanged pressure type instrument pressure testing fixture of claim 1, wherein, The connecting head is a threaded joint, and the length of the connecting head is greater than the thickness of the base plate.

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